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List of Publications

(Papers, proceediings of international conference, reviews, and books)

  1. 'Upgrade of Titanium Ore by Selective Chlorination Using Calcium Chloride',
    J. Kang. and T. H. Okabe:
    Proceedings of 4th Asian Conference on Molten Salt Chemistry and Technology, and 44th Symposium on Molten Salt Chemistry [Matsushima, Japan, Sep. 23-27, 2012] (2012) pp.176-182.
  2. 'Effect of Slag Composition on the Solubility of Rh in Molten Silicate Slags',
    C. Wiraseranee, T.H. Okabe, and K. Morita:
    Proceedings of the 9th International Conference on Molten Slags, Fluxes and Salts [Beijing, China, May 27-30, 2012] (2012).
  3. 'Effective Dissolution of Platinum by Using Chloride Salts in Recovery Process',
    C. Horike, K. Morita, and T. H. Okabe:
    Metall. Mater. Trans. B, vol.43, no.6 (2012) pp.1300-1307.
  4. 'Dissolution Behavior of Rhodium into Molten Slag',
    C. Wiraseranee, T. H. Okabe, and K. Morita:
    Proceedings of TMS2011 140th Annual Meeting & Exhibition [San Diego, USA, Feb. 27-Mar. 3, 2011] (2011) pp.143-150.
  5. 'Aluminum Subhalide as a Reductant for Metallothermic Reduction',
    K. Yasuda, K. Saegusa, and T. H. Okabe:
    High Temp. Mater. Processes, vol.30, no.4 (2011) pp.411-423.
  6. 'Ruthenium Solubility and Dissolution Behavior in Molten Slag',
    Hiroshi Shuto, T. H. Okabe, and Kazuaki Morita:
    Mater. Trans., vol.52, no.11 (2011) pp.1899-1904.
  7. 'Research Review on Solar-grade Silicon Production by Metallothermic Reduction',
    Kouji Yasuda and Toru H. Okabe:
    Journal of Metals (JOM), vol.41, no.12 (2010) pp.94-101.
  8. 'Production of Solar-grade Silicon by Halidothermic Reduction of Silicon Tetrachloride',
    K. Yasuda, K. Saegusa, and T. H. Okabe:
    Metall. Mater. Trans. B, vol.42B, no.1 (2010) pp.37-49.
  9. 'Gamow-Teller Strength Distributions in 48Sc by the 48Ca(p,n) and 48Ti(n,p) Reactions and Two-Neutrino Double-beta Decay Nuclear Matrix Elements',
    K. Yako, M. Sasano, K. Miki, H. Sakai, M. Dozono, D. Frekers, M.B. Greenfield, K. Hatanaka, E. Ihara, M. Kato, T. Kawabata, H. Kuboki, Y. Maeda, H. Matsubara, K. Muto, S. Noji, H. Okamura, T.H. Okabe, S. Sakaguchi, Y. Sakemi, Y. Sasamoto, K. Sekiguchi, Y. Shimizu, K. Suda, Y. Tameshige, A. Tamii, T. Uesaka, T. Wakasa, and H. Zheng:
    Phys. Rev. Lett., vol.103, no.1 (2009) p.012503.
  10. 'Electrochemical production of Al-Sc alloy in CaCl2-Sc2O3 molten salt',
    M. Harata, K. Yasuda, H. Yakushiji, and T.H. Okabe:
    J. Alloy. Compd., vol.474 (2009) pp.124-130.
  11. 'New Method for Production of Solar-Grade Silicon by Subhalide Reduction',
    K. Yasuda, K. Saegusa, and T. H. Okabe:
    Mater. Trans., vol.50, no.12 (2009) pp.2873-2878.
  12. 'Production of Metallic Vanadium by Preform Reduction Process',
    Akihiko Miyauchi, and T. H. Okabe:
    Mater. Trans., vol.51, no.6 (2009) pp.1102-1108.
  13. 'Fundamental Study on Titanium Production Process by Utilizing Disproportionation of Titanium Subhalide' (in Japanese),
    Taiji Oi and Toru H. Okabe:
    Titanium Jpn, vol.56, no.4 (2008) pp.268-275.
  14. 'Gold Smelting and Recycling Technologies (in Japanese)' (in Japanese),
    Hideko Nakata and T. H. Okabe:
    M & E (Bull. Kogyo Chosakai Publishing, Inc., Japan), vol.6 (2008) pp.48-52.
  15. 'Recent Topics on Titanium and Silicon Production Technologies',
    T. H. Okabe, K. Yasuda, and T. Oi:
    Proceedings of 2008 Joint Symposium on Molten Salts [Kobe, Japan, Oct. 19-23, 2008] (2008) pp.270-275.
    ***Invited Lecture***
  16. 'Production of Scandium and Al-Sc Alloy by Metallothermic Reduction',
    M. Harata, T. Nakamura, H. Yakushiji, and T. H. Okabe:
    (一部修正してMineral Processing and Extractive Metallurgy (Trans. Inst. Min Metall. C)に転載) [San Diego, U.S.A, Aug. 27-31, 2006] (2008).
    ***Invited Lecture***
  17. 'Fundamental Study on Synthesis and Enrichment of Titanium Subchloride',
    O. Takeda and T. H. Okabe:
    J. Alloy. Compd., vol.457 (2008) pp.376-383.
  18. 'Niobium Powder Production by Reducing Electrochemically Dissolved Niobium Ions in Molten Salt',
    B. Yuan and T. H. Okabe:
    J. Alloy. Compd., vol.454 (2008) pp.185-193.
  19. 'Production of Scandium and Al-Sc Alloy by Metallothermic Reduction',
    M. Harata, T. Nakamura, H. Yakushiji, and T.H. Okabe:
    Mineral Processing and Extractive Metallurgy, vol.117, no.2 (2008) pp.95-99.
  20. 'Comprehensive Recycle technologies on Precious Metals and Rare Metals -- toward the development and management of stable supply and alternative materials-' (in Japanese),
    T. H. Okabe (co-author):
    NTS Inc., Tokyo (2007.10.23).
    Volume 1 Chapter 1: Precious metals and their situation (T. H. Okabe);
    Volume 1 Chapter 2 Paragraph 2: Refining methods and recycling technologies of platinum group metals (T. H. Okabe);
    Volume 1 Chapter 2 Paragraph 2 3.1: Hydrometallurgical process for recoverying platinum group metals from wastes by utilizing vapor phase processing (C. Horike and T. H. Okabe);
    Volume 2 Chapter 3 Paragraph 6 2: Tantalum separation and collection method from capacitor scrap (K. Mineta and T. H. Okabe);
  21. 'Current Status of Platinum Group Metals and Recycling Technologies' (in Japanese),
    T. H. Okabe:
    Materia Japan, (Bull. of Japan Inst. Metals), vol.46, no.8 (2007) pp.522-529.
  22. 'Production Technology of Rare Earth Metals and These Recycling Processes' (in Japanese),
    T. H. Okabe:
    Mater. Sci. Tech. (Kinzoku), vol.77, no.8 (2007) pp.598-604.
  23. 'Current Status of Rare Metals and Challenges for Japan' (in Japanese),
    T. H. Okabe:
    Eng. Mater., vol.55, no.8 (2007) pp.18-25.
  24. 'Fundamental study on titanium production process by disproportionation reactions of titanium subchlorides',
    T. Oi and T. H. Okabe:
    Proceedings of the 11th World Conference on Titanium,Vol.1 [Kyoto, Japan, Jun. 3-7, 2007] (2007.12) pp.111-114.
  25. 'Production of Titanium Powder Directly from Titanium Ore',
    H. Zheng and Toru H. Okabe:
    Proceedings of the 11th World Conference on Titanium,Vol.1 [Kyoto, Japan, Jun. 3-7, 2007] (2007) pp.119-122.
  26. 'Titanium Production Process by Utilizing Titanium Subchlorides',
    O. Takeda and T. H. Okabe:
    Proceedings of the 11th World Conference on Titanium,Vol.1 [Kyoto, Japan, Jun. 3-7, 2007] (2007) pp.115-118.
  27. 'Synthesis and Enrichment of Titanium Subchlorides in Molten Salts',
    O. Takeda and T. H. Okabe:
    Prooceedings of the 136th TMS Annual Meeting [Orlando, U.S.A, Feb. 25-Mar. 1, 2007] (2007) pp.69-78.
  28. 'A Novel Recycling Process of Titanium Metal Scraps by Using Chloride Wastes',
    H. Zheng and T. H. Okabe:
    TheProoceedings of the 136th TMS Annual Meeting [Orlando, U.S.A., Feb.25-Mar.1, 2007]) [Orlando, U.S.A, Feb. 25-Mar. 1, 2007] (2007) pp.147-154.
  29. 'Production of Fine Tantalum Powder by Electrochemical Method',
    B. Yuan and T. H. Okabe:
    Mater. Trans., vol.48, no.10 (2007) pp.2687-2694.
  30. 'Production of Fine Tantalum Powder by Preform Reduction Process Using Mg-Ag Alloy Reductant',
    B. Yuan and T. H. Okabe:
    J. Alloy. Compd., vol.443 (2007) pp.71-80.
  31. 'Production of Titanium Powder by Calciothermic Reduction of Titanium Concentrations of Ore Using the Preform Reduction Process',
    H. Zheng, H. Ito, and T. H. Okabe:
    Mater. Trans., vol.48, no.8 (2007) pp.2244-2251.
  32. 'Recovery of Titanium Metal Scrap by Utilizing Chloride Wastes',
    H. Zheng and T. H. Okabe:
    J. Alloy. Compd., vol.461 (2007) pp.459-466.
  33. 'Electrochemically Assisted Formation of Fine Niobium Powder in Molten Salt',
    B. Yuan and T. H. Okabe:
    J. Electrochem. Soc., vol.154, no.1 (2007) pp.E1-E7.
  34. 'Block of Electricity and Technology: Production Process of Titanium' (in Japanese),
    T. H. Okabe:
    J. Inst. Elect. Eng. Jpn., vol.126, no.12 (2006) pp.801-805.
  35. 'History and Application, Current Status and Future of Platinum Group Metals' (in Japanese),
    T. H. Okabe:
    Mater. Sci. Tech. (Kinzoku), vol.76, no.9 (2006) pp.980-984.
  36. 'New Recovery Process of Platinum Group Metals from Scraps by Utilizing Vapor Treatment' (in Japanese),
    C. Ohkawa and T. H. Okabe:
    Mater. Sci. Tech. (Kinzoku), vol.76, no.9 (2006) pp.1034-1039.
  37. 'Production Process of Rare Metals' (in Japanese),
    T. H. Okabe:
    OHM, vol.93, no.4 (2006) pp.37-41.
  38. 'Fundamental Study on Magnesiothermiec Reduction of Titanium Subchlorides',
    O. Takeda and T. H. Okabe:
    Proceedings of the 16th Iketani Conference: Masuko Symposium [Tokyo, Japan, Nov. 12-16, 2006] (2006.11) pp.715-720.
  39. 'Selective Chlorination of Titanium Ore and Production of Titanium Powder by Preform Reduction Process',
    H. Zheng and T. H. Okabe:
    Proceedings of the 16th Iketani Conference: Masuko Symposium [Tokyo, Japan, Nov. 12-16, 2006] (2006) pp.1005-1010.
  40. 'Fundamental Study on Magnesiothermic Reduction of Titanium Dichloride',
    O. Takeda and T. H. Okabe:
    Metall. Mater. Trans. B, vol.37B (2006) pp.823-830.
  41. 'Electroplating of Titanium on Iron by Galvanic Contact Deposition in NaCl-TiCl2 Molten Salt',
    T. Uda, T. H. Okabe, Y. Waseda, and Y. Awakura:
    Sci. Technol. Adv. Mater., vol.7, no.6 (2006) pp.490-495.
  42. 'High-Speed Titanium Production by Magnesiothermic Reduction of Titanium Trichloride',
    O. Takeda and T. H. Okabe:
    Mater. Trans., vol.47, no.4 (2006) pp.1145-1154.
  43. 'Recovery of Neodymium from a Mixture of Magnet Scrap and Other Scrap',
    O. Takeda, T. H. Okabe, and Y. Umetsu:
    J. Alloy. Compd., vols.408-412 (2006) pp.387-390.
  44. 'New Smelting Process of Titanium' (in Japanese),
    T. H. Okabe:
    Keikinzoku (J. Japan Institute of Light Metals), vol.56, no.11 (2005) pp.537-543.
  45. 'New Extraction Process of Precious Metals from Scrap by Chemical Vapor Treatment',
    C. Ohkawa and T. H. Okabe:
    Proceedings of the European Metallurgical Conference 2005 (EMC2005),vol.1 [Dresden, Germany, Sep. 18-21, 2005] (2005.9) pp.293-306.
  46. 'Recycling Titanium Metal Scraps by Utilizing Chloride Wastes',
    H. Zheng, R. Matsuoka, and T. H. Okabe:
    Proceedings of the European Metallurgical Conference 2005 (EMC2005),vol.4 [Dresden, Germany, Sep. 18-21, 2005] (2005.9) pp.1509-1518.
  47. 'Titanium Production Processes by Utilizing Molten Salts',
    T. H. Okabe and O. Takeda:
    Proceeding [Wuhu, Anhui, China, May 23-29, 2005] (2005.5) pp.25-28.
    ***Invited, Keynote Lecture***
  48. 'Niobium Powder Production in Molten Salt by Electrochemical Pulverization',
    B. Yuan and T. H. Okabe:
    Proceedings of the First Asian and Ninth China-Japan Bilateral Conference on Molten Salt Chemistry and Technology (FANCJ Conference) [Wuhu, Anhui, China, May 23-29, 2005] (2005) pp.129-132.
  49. 'Evaluation of Ti-Cr-Cu Alloys for Dental Applications',
    M. Koike, M. Itoh, O. Okuno, O. Takeda, T. H. Okabe, and T. Okabe:
    Proceedings of the 2005 TMS Annual Meeting [San Francisco, U.S.A., Feb. 13-17, 2005] (2005).
  50. 'A New High Speed Titanium Production by Subhalide Reduction Process',
    O. Takeda and T. H. Okabe:
    Proceedings of the 134th TMS Annual Meeting [San Francisco, U.S.A., Feb. 13-17, 2005] (2005) pp.1139-1144.
  51. 'Iron Removal from Titanium Ore using Selective Chlorination and Effective Utilization of Chloride Wastes',
    R. Matsuoka and T. H. Okabe:
    Proceedings of the Symposium on Metallurgical Technology for Waste Minimization at the 2005 TMS Annual Meeting [San Francisco, U.S.A., Feb. 13-17, 2005] (2005).
  52. 'Recycling Process for Tantalum from Capacitor Scraps and Chlorination by Utilizing Choride Wastes' (in Japanese),
    K. Mineta, and T. H. Okabe:
    Shigen-to-Sozai (J. Min. Mater. Process Inst. Jpn.), vol.121, no.7 (2005) pp.284-290.
  53. 'Phase Equilibria of the System Fe-Mg-Nd at 1076 K',
    O. Takeda, T. H. Okabe, and Y. Umetsu:
    J. Alloy. Compd., vol.392 (2005) pp.206-213.
  54. 'Production of Titanium Powder Directly from TiO2 in CaCl2 by Electronically Mediated Reaction (EMR)',
    I. Park, T. Abiko, and T. H. Okabe:
    J. Phys. Chem. Solids, vol.66, nos.2-4 (2005) pp.410-413.
  55. 'Development of a Recycling Process for Tantalum from Capacitor Scraps',
    K. Mineta and T. H. Okabe:
    J. Phys. Chem. Solids, vol.66, nos.2-4 (2005) pp.318-321.
  56. 'Evaluation of Ti-Cr-Cu Alloys for Dental Applications',
    M. Koike, M. Itoh, O. Okuno, K. Kimura, O. Takeda, T. H. Okabe, and T. Okabe:
    J. Mater. Eng. Perform., vol.14, no.6 (2005) pp.778-783.
  57. 'Production Process of Tantalum and Niobium Powder for Electronic Material' (in Japanese),
    T. H. Okabe:
    Materia Japan, (Bull. of Japan Inst. Metals), vol.43, no.1 (2004) pp.34-42.
  58. 'Current Status of Advanced Metal Production Technology Using Molten Salts',
    T. H. Okabe:
    Proceedings of Euchem 2004, Molten Salts Conference, University of Vroclaw, Wroclaw University of Technology [Poland, Jun. 20-25, 2004] (2004) p.41.
    ***Keynote Lecture***
  59. 'Metal Vapor Treatment for Platinum Group Metals from Spent Automotive Catalyst',
    Y. Kayanuma, T. H. Okabe, Y. Mitsuda, M. Miyake, and M. Maeda:
    Proceedings of the Fifth International Symposium on Waste Processing and Recycling in Mineral and Metallurgical Industries [COM 2004] [Hamilton, Canada, Aug. 22-25, 2004] (2004) pp.169-180.
  60. 'Recycling Titanium and Other Reactive Metal Scraps by Utilizing Chloride Wastes',
    T. H. Okabe, R. Matsuoka, and O. Takeda:
    Proceedings of the Global Symposium on Recycling, Waste Treatment and Clean Technology [REWAS 2004],vol.1 [Madrid, Spain, Sep. 26-29, 2004] (2004) pp.893-902.
  61. 'New Platinum Extraction Process Using Metal Vapor Treatment',
    Y. Kayanuma, T. H. Okabe, Y. Mitsuda, and M. Maeda:
    Proceedings of the Global Symposium on Recycling, Waste Treatment and Clean Technology [REWAS 2004],vol.2 [Madrid, Spain, Sep. 26-29, 2004] (2004) pp.1841-1848.
  62. 'Recovery of Neodymium from a Mixture of Magnet Scrap and Other Scrap',
    O. Takeda, T. H. Okabe, and Y. Umetsu:
    Proceedings of the international conference on Rare Earths [Rare Earths'04] [Nara, Japan, Nov. 7-12, 2004] (2004) p.387.
  63. 'Production of Titanium Powder Through an Electronically Mediated Reaction',
    T. H. Okabe, T. Kakihira, and T. Abiko:
    Proceedings of the Symposium on Electrochemical Measurements and Processing of Materials at the 2004 TMS Annual Meeting [Charlotte, U.S.A., Mar. 14-18, 2004] (2004) pp.67-74.
    ***Invited Lecture***
  64. 'Recycling Process for Tantalum and Some Other Reactive Metal Scraps',
    R. Matsuoka, K. Mineta, and T. H. Okabe:
    Proceedings of the Symposium on Solid and Aqueous Waste from Non-ferrous Metal Industries at the 2004 TMS Annual Meeting [Charlotte, U.S.A., Mar. 14-18, 2004] (2004) pp.689-696.
  65. 'Phase Equilibrium of the System Ag-Fe-Nd, and Nd Extraction from Magnet Scraps Using Molten Silver',
    O. Takeda, T. H. Okabe, and Y. Umetsu:
    J. Alloy. Compd., vol.379 (2004) pp.305-313.
  66. 'Metal Vapor Treatment for Enhancing the Dissolution of Platinum Group Metals from Automotive Catalyst Scrap',
    Y. Kayanuma, T. H. Okabe and M. Maeda:
    Metall. Mater. Trans. B, vol.35B (2004) pp.817-824.
  67. 'Production of Niobium Powder by Preform Reduction Process Using Various Fluxes and Alloy Reductant',
    T. H. Okabe, S. Iwata, M. Imagunbai, Y. Mitsuda, and M. Maeda:
    ISIJ International, vol.44, no.2 (2004) pp.285-293.
  68. 'New Recovery Process for Rhodium Using Metal Vapor',
    Y. Kayanuma, T. H. Okabe, Y. Mitsuda, and M. Maeda:
    J. Alloy. Compd., vol.365 (2004) pp.211-220.
  69. 'Titanium Powder Production by Preform Reduction Process(PRP)',
    T. H. Okabe, T. Oda, and Y. Mitsuda:
    J. Alloy. Compd., vol.364 (2004) pp.156-163.
  70. 'Refining of Metals (Chapter 3) -in "Science and Applications of Molten Salts"-' (in Japanese),
    T. H. Okabe (co-author), Edited by Y. Itoh:
    Industrial Publishing & Consulting, Tokyo (2003.7.31).
  71. 'New Technologies for Refining Rare Metals' (in Japanese),
    T. H. Okabe, T. Hirato, I. Katayama, I. Jinbo, T. Okura:
    Shigen-to-Sozai (J. Min. Mater. Process Inst. Jpn.), vol.119, nos.10,11 (2003) pp.697-700.
  72. 'Is There Bright Future for Titanium in Japan? - Materials Research Strategy after Minelva Project' (in Japanese),
    K. Nikami and T. H. Okabe:
    Titanium Jpn, vol.51, no.2 (2003) pp.96-101.
  73. 'Recent Topics of Rare Metal Production Technology' (in Japanese),
    T. H. Okabe:
    Molten Salts (J. Molten Salt Committe of the Electrochemical Society of Japan), vol.46, no.3 (2003) pp.196-210.
  74. 'Titanium Powder Production by Preform Reduction Process',
    T. H. Okabe, T. Oda, and Y. Mitsuda:
    Proceedings of 10th World Conference on Titanium, Ti-2003 [Hamburg, Germany, Jul. 13-18, 2003] (2003) pp.261-268.
  75. 'Reduction of Titanium Oxide in Molten Salt Medium',
    T. Abiko, Il Park, and T. H. Okabe:
    Proceedings of 10th World Conference on Titanium, Ti-2003 [Hamburg, Germany, Jul. 13-18, 2003] (2003) pp.253-260.
    *** Student Poster Award ***
  76. 'Production of Titanium Powder Directly from TiO2 in CaCl2 by Electronically Mediated Reaction (EMR)',
    I. Park, T. Abiko, and T. H. Okabe:
    Proceedings of InternationalIUPAC Conference on High Temperature Materials Chemistry-?? [Tokyo, Japan, May 19-23, 2003] (2003) p.66.
    J. Phys. Chem. Solids, vol. 66, no. 2-4, (2005) pp.410-413
  77. 'Development of a Recycling Process for Tantalum from Capacitor Scraps',
    K. Mineta and T. H. Okabe:
    Proceedings of InternationalIUPAC Conference on High Temperature Materials Chemistry-?? [Tokyo, Japan, May 19-23, 2003] (2003) p.150.
    J. Phys. Chem. Solids, vol. 66, nos. 2-4, Feb.-Apr. (2005) pp.318-321
  78. 'Some Challenges in the Nitride Metallurgy: Synthesis of Complex Nitrides, Phase Equilibria and Chemical Potential Measurements',
    T. H. Okabe, O. Ishiyama, H. Yamane, K. T. Jacob and Y. Waseda:
    Proceedings of Yazawa International Symposium [San Diego, U.S.A, Mar. 2-6, 2003] (2003) pp.563-577.
    ***Invited Lecture***
  79. 'Scrap Combination for Recycling Valuable Metals: Direct Extraction and Recovery of Neodymium Metal from Magnet Scraps',
    T. H. Okabe, O. Takeda, K. Fukuda, and Y. Umetsu:
    Proceedings of Yazawa International Symposium [San Diego, U.S.A, Mar. 2-6, 2003] (2003) pp.1079-1091.
  80. 'Production of Niobium Powder by Metallothermic Reduction of Feed Preform',
    T. H. Okabe, S. Iwata, M. Imagunbai, and M. Maeda:
    ISIJ International, vol.43, no.12 (2003) pp.1882-1889.
  81. 'Production of Tantalum Powder by Magnesiothermic Reduction of Feed Preform',
    T. H. Okabe, N. Sato, Y. Mitsuda, and S. Ono:
    Mater. Trans. JIM, vol.44, no.12 (2003) pp.2646-2653.
  82. 'Recovery of Platinum Using Magnesium Vapor',
    T. H. Okabe, S. Yamamoto, Y. Kayanuma, and M. Maeda:
    J. Mater. Res., vol.18, no.8 (2003) pp.1960-1967.
  83. 'Platinum Recovery Using Calcium Vapor Treatment',
    T. H. Okabe, Y. Kayanuma, S. Yamamoto, and M. Maeda:
    Mater. Trans., vol.44, no.7 (2003) pp.1386-1393.
  84. 'Direct Extraction and Recovery of Neodymium Metal from Magnet Scrap',
    T. H. Okabe, O. Takeda, K. Fukuda, and Y. Umetsu:
    Mater. Trans. JIM, vol.44, no.4 (2003) pp.798-801.
  85. 'Recycle of Metals -in "Green Materials Technology - Environmentally Sound Recovery Process of Inorganic Process and Materials-"-' (in Japanese),
    T. H. Okabe (co-author), Edited by T. Kudo, M. Misonou et al:
    Kodansha, Tokyo (2002.7.10).
  86. 'Encyclopedia of Recycling' (in Japanese),
    T. H. Okabe (co-author), Edited by I. Yasui et al:
    Maruzen, Tokyo (2002.2).
  87. 'Reduction Process of Titanium Oxide Using Molten Salt' (in Japanese),
    T. H. Okabe and T. Uda:
    Titanium Jpn, vol.50, no.4 (2002) pp.325-330.
  88. 'Review on Titanium Refining Research, and Future Scope for Development of New Production Process' (in Japanese),
    K. Nikami, T. H. Okabe, and K. Ono:
    Shigen-to-Sozai (J. Min. Mater. Process Inst. Jpn.), vol.118, no.8 (2002) pp.529-535.
  89. 'Recent Topics on Titanium Refining Process' (in Japanese),
    T. H. Okabe, K. Nikami, and K. Ono:
    Bull. Iron Steel Inst. Jpn (Ferrum), vol.7, no.1 (2002) pp.39-45.
  90. 'Will Titanium Be Able to Replace Aluminum in the Future?' (in Japanese),
    K. Nikami and T. H. Okabe:
    Titanium Jpn, vol.50, no.3 (2002) pp.219-227.
  91. 'On the New Refining Process' (in Japanese),
    T. H. Okabe:
    Titanium Jpn, vol.50, no.2 (2002) pp.102-104.
  92. 'New Production Process of Niobium Powder Using Molten Salt' (in Japanese),
    T. H. Okabe:
    Mater. Sci. Tech. (Kinzoku), vol.72, no.3 (2002) pp.232-237.
  93. 'Surface Layer Formed by Selective Oxidation in High-Purity Copper-Titanium Binary Alloys',
    S. Suzuki, K. Hirabayashi, K. Mimura, T. H. Okabe, M. Issiki, and Y. Waseda:
    Mater. Trans. JIM, vol.43, no.9 (2002) pp.2303-2308.
  94. 'Semi-Continuous Production of Tantalum Powder by Electronically Mediated Reaction (EMR)',
    I. Park, T. H. Okabe, Oh Yeon Lee, Chuel Ro Lee, and Y. Waseda:
    Mater. Trans. JIM, vol.43, no.8 (2002) pp.2080-2086.
  95. 'Removal of Oxygen in Reactive Metals -in "Purification Process and Characterization of Ultra High Purity Metals" edited by Y. Waseda and M. Isshiki-',
    T. H. Okabe, K. T. Jacob and Y. Waseda:
    Springer, Berlin (2001) pp.3-37.
  96. 'Electrodeposition of Silver from Nitrate Solutions' (in Japanese),
    K. Mishina, T. H. Okabe, and Y. Umetsu:
    Shigen-to-Sozai (J. Min. Mater. Process Inst. Jpn.), vol.117 (2001) pp.753-758.
  97. 'New Titanium Production Process with Molten Salt Mediator' (in Japanese),
    J. Tanaka, T. H. Okabe, N. Sakai, T. Fujitani, K. Takahashi, N. Michishita, Y. Umetsu, and K. Nikami:
    J. Jpn. Inst. Metals, vol.65, no.8 (2001) pp.659-667.
  98. 'Semi-continuous Production of Niobium Powder by Magnesiothermic Reduction of Nb2O5',
    I. Park, T. H. Okabe, Y. Waseda, H. S. Yu, and O. Y. Lee:
    Mater. Trans., vol.42, no.5 (2001) pp.850-855.
  99. 'Ternary Nitrides Prepared in the Li3N - Mg3N2 System at 900 - 1000 K',
    H. Yamane, T. H. Okabe, O. Ishiyama, Y. Waseda, and M. Shimada:
    J. Alloy. Compd., vol.319 (2001) pp.124-130.
  100. 'Electrochemical Properties of Li3N Dissolved in Molten LiCl at 900 K',
    T. H. Okabe, A. Horiuchi, K. T. Jacob, and Y. Waseda:
    J. Electrochem. Soc., vol.148, no.5 (2001) pp.E219-E226.
  101. 'Recovery of Molybdenum and Rhenium from Sulfide Concentrate by Electro-Oxidation and Precipitation',
    T. Darjaa, T. H. Okabe, and Y. Umetsu:
    Proceedings of the 2nd Intl. Conf. on Processing Materials for Properties (PMP) [San Francisco, U.S.A., Nov. 5-8, 2000] (2000) pp.751-756.
  102. 'Titanium Powder Production by Reactive Molten Salt as an Reductant',
    T. Uda, T. H. Okabe, and Y. Waseda:
    Proceedings of the 2nd Intl. Conf. on Processing Materials for Properties (PMP) [San Francisco, U.S.A., Nov. 5-8, 2000] (2000) pp.31-36.
  103. 'Titanium Production by Magnesiothermic Reduction of TiCl4 through an Electronically Mediated Reaction (EMR)',
    T. Uda, T. H. Okabe, and Y. Waseda:
    Proceedings of the 9th World Conference on Titanium [Saint Petersburg, Russia, Jun. 7-11, 1999] (2000) pp.1515-1522.
  104. 'Direct Oxygen Removal and Anticontamination Treatment of Titanium',
    T. H. Okabe and Y. Umetsu:
    Proceedings of the 9th World Conference on Titanium [Saint Petersburg, Russia, Jun. 7-11, 1999] (2000) pp.1417-1424.
  105. 'Phase Equilibria and Thermodynamics of (Silver + Rhodium + Oxygen)',
    K. T. Jacob, T. Uda, T. H. Okabe, and Y. Waseda:
    J. Chem. Thermodyn., vol.32, no.10 (2000) pp.1399-1408.
  106. 'Reduction of TiCl4 in Molten Salt/Liquid Metal Mixtures' (in Japanese),
    N. Michishita, T. H. Okabe, N. Sakai, J. Tanaka, K. Nikami, and Y. Umetsu:
    J. Jpn. Inst. Metals, vol.64, no.10 (2000) pp.940-947.
  107. 'Physicochemical Studies of Lithium Nitride in Molten LiCl-KCl',
    T. H. Okabe, A. Horiuchi, K. T. Jacob, and Y. Waseda:
    Mater. Trans. JIM, vol.41, no.7 (2000) pp.822-830.
  108. 'Electro-Oxidation of Molybdenum Concentrate Using Bipolar Cell, and Recovery of Rhenium',
    T. Darjaa, T. H. Okabe, Y. Waseda, and Y. Umetsu:
    J. Mining and Materials Institute of Japan, vol.116, no.6 (2000) pp.520-526.
  109. 'Recovery of Molybdenum from Sulfide Concentrate by Electro-Oxidation and Precipitation',
    T. Darjaa, T. H. Okabe, Y. Waseda, and Y. Umetsu:
    J. Mining and Materials Institute of Japan, vol.116, no.3 (2000) pp.203-210.
  110. 'Solid-State Cells with Buffer Electrodes for Accurate Thermodynamic Measurements: System Nd-Ir-O',
    K. T. Jacob, T. H. Okabe, T. Uda, and Y. Waseda:
    Electrochim. Acta, vol.45 (2000) pp.1963-1971.
  111. 'The Standard Enthalpy and Entropy of Formation of Rh2O3 - A Third-Law Optimization',
    K. T. Jacob, T. Uda, T. H. Okabe, and Y. Waseda:
    High Temp. Mater. Processes, vol.19, no.1 (2000) pp.11-16.
  112. 'Contactless Electrochemical Reduction of Titanium (II) Chloride by Aluminum',
    T. Uda, T. H. Okabe, Y. Waseda, and K. T. Jacob:
    Metall. Mater. Trans. B, vol.31B, no.4 (2000) pp.713-721.
  113. 'On the Reduction Process of Titanium' (in Japanese),
    T. H. Okabe, Y. Waseda, and Y. Umetsu:
    Mater. Sci. Tech. (Kinzoku), vol.69, no.10 (1999) pp.868-874.
  114. 'Electro-oxidation of Molybdenum Concentrate in Sodium Chloride Solution',
    T. Darjaa, T. H. Okabe, Y. Waseda, and Y. Umetsu:
    J. Mining and Materials Institute of Japan, vol.115, no.10 (1999) pp.755-761.
  115. 'Advanced Design of the Solid-State Cell for Accurate Thermodynamic Measurements on Ternary Oxides: System Sm-Pd-O',
    K. T. Jacob, T. H. Okabe, T. Uda, and Y. Waseda:
    Mater. Sci. & Eng. B, vol.B64 (1999) pp.44-53.
  116. 'Determination of Thermodynamic Properties of Ca4PtO6 and CaPtO3 Using Solid State Cells with Buffer Electrodes',
    K. T. Jacob, T. H. Okabe, T. Uda, and Y. Waseda:
    Z. Metallkd., vol.90, no.7 (1999) pp.491-498.
  117. 'System Cu-Rh-O: Phase Diagram and Thermodynamic Properties of CuRhO2 and CuRh2O4',
    K. T. Jacob, T. H. Okabe, T. Uda, and Y. Waseda:
    Bull. Mater. Sci., vol.22, no.4 (1999) pp.741-749.
  118. 'Production of Niobium Powder by Electronically Mediated Reaction (EMR) Using Calcium as a Reductant',
    T. H. Okabe, I. Park, K. T. Jacob, and Y. Waseda:
    J. Alloy. Compd., vol.288 (1999) pp.200-210.
  119. 'Phase Relations in the System Sr-Ir-O and Thermodynamic Measurements on SrIrO3, Sr2IrO4, and Sr4IrO6 Using Solid-State Cells with Buffer Electrodes',
    K. T. Jacob, T. H. Okabe, T. Uda, and Y. Waseda:
    J. Alloy. Compd., vol.288 (1999) pp.188-196.
  120. 'Phase Equilibria and Thermodynamics of the system Dy-Mg-Cl at 1073K',
    T. Uda, T. H. Okabe, Y. Waseda, and K. T. Jacob:
    J. Alloy. Compd., vol.284 (1999) pp.282-288.
  121. 'Electrochemical Deoxidation of RE-O (RE=Gd, Tb, Dy, Er) Solid Solutions',
    K. Hirota, T. H. Okabe, F. Saito, Y. Waseda, and K. T. Jacob:
    J. Alloy. Compd., vol.282 (1999) pp.101-108.
  122. 'Solid-State Cells with Buffer Electrodes for the Measurement of Thermodynamic Properties of IrO2, CaIrO3, Ca2IrO4, and Ca4IrO6',
    K. T. Jacob, T. H. Okabe, T. Uda, and Y. Waseda:
    J. Electrochem. Soc., vol.146, no.5 (1999) pp.1854-1861.
  123. 'System Nd-Pd-O: Phase Diagram and Thermodynamic Properties of Oxides Using a Solid State Cell with Advanced Features',
    K. T. Jacob, T. H. Okabe, T. Uda, and Y. Waseda:
    J. Phase Equilib., vol.20, no.6 (1999) pp.553-564.
  124. 'Metallothermic Reduction of Rare Metals: Reaction Mechanism and Electron Pathway' (in Japanese),
    T. H. Okabe, Il Park, and Y. Waseda:
    Molten Salts (J. Molten Salt Committe of the Electrochemical Society of Japan), vol.41, no.2 (1998) pp.213-225.
  125. 'Materials Synthesis by Metallothermic Reduction',
    T. H. Okabe, H.Zhu, and D. R. Sadoway:
    Proceedings of the International Symposium in honour of Professor, Dr. teche. Terje Ostvold [Roros, Norway, Nov. 2-3, 1998] (1998) pp.77-88.
  126. 'Metallothermic Reduction as an Electronically Mediated Reaction',
    T. H. Okabe and D. R. Sadoway:
    J. Mater. Res., vol.13, no.12 (1998) pp.3372-3377.
  127. 'Thermodynamic Properties of Ln-O (Ln=La, Pr, Nd) Solid Solutions and Their Deoxidation by Molten Salt Electrolysis',
    T. H. Okabe, K. Hirota, Y. Waseda, and K. T. Jacob:
    J. Mining and Materials Processing Institute of Japan, vol.114, no.11 (1998) pp.813-818.
  128. 'Tantalum Powder Production by Magnesiothermic Reduction of TaCl5 through an Electronically Mediated Reaction (EMR)',
    Il Park, T. H. Okabe, and Y. Waseda:
    J. Alloy. Compd., vol.280, nos.1-2 (1998) pp.265-272.
  129. 'Thermodynamic Properties of Oxygen in RE-O (RE=Gd, Tb, Dy, Er) Solid Solutions',
    T. H. Okabe, K. Hirota, E. Kasai, F. Saito, Y. Waseda, and K. T. Jacob:
    J. Alloy. Compd., vol.279 (1998) pp.184-191.
  130. 'Titanium Powder Production by Halidothermic Reduction' (in Japanese),
    T. Uda, T. H. Okabe, and Y. Waseda:
    J. Jpn. Inst. Metals, vol.62, no.9 (1998) pp.796-802.
  131. 'Reduction Mechanism of TiCl4 in Reaction Mediator Salt' (in Japanese),
    T. H. Okabe, T. Uda, and Y. Waseda:
    Shigen-to-Sozai (J. Min. Mater. Process Inst. Jpn.), vol.114, no.8 (1998) pp.573-579.
  132. 'Location Control of Titanium Deposition during Magnesiothermic Reduction of TiCl4 by Long Range Electronically Mediated Reaction' (in Japanese),
    T. Uda, T. H. Okabe, and Y. Waseda:
    J. Jpn. Inst. Metals, vol.62, no.1 (1998) pp.76-84.
  133. 'Producing Titanium through an Electronically Mediated Reaction',
    T. H. Okabe and Y. Waseda:
    Journal of Metals (JOM), vol.49 (1997) pp.28-32.
  134. 'Reaction without Physical Contact - Materials Processing by a Novel Idea: "Electronically Mediated Reaction"' (in Japanese),
    T. H. Okabe, T. Uda, E. Kasai, and Y. Waseda:
    Boundary, vol.13, no.1 (1997) pp.42-51.
  135. 'Location Control of Reaction during Magnesiothermic Reduction of TiCl4' (in Japanese),
    T. H. Okabe and T. Uda:
    Bulletin of the Institute for Advanced Materials Processing Tohoku University (Sozaiken Iho), vol.53, nos.1,2 (1997) pp.1-11.
  136. 'Mechanism of Magnesiothermic Reduction of TiCl4 by an Electronically Mediated Reaction (EMR)',
    T. H. Okabe, T. Uda, E. Kasai, and Y. Waseda:
    Proceedings of Titanium Extraction and Processing, the 126th TMS Annual Meeting [Indianapolis, U.S.A., Sep. 14-18, 1997] (1997) pp.243-258.
  137. 'Reaction Pathways during Metallothermic Reduction of TiCl4 by Utilizing Chemical Potential Diagrams',
    T. H. Okabe, T. Uda, E. Kasai, and Y. Waseda:
    Proceedings of Titanium Extraction and Processing, the 126th TMS Annual Meeting [Indianapolis, U.S.A., Sep. 14-18, 1997] (1997) pp.133-151.
  138. 'Phase Equilibria and Reaction Pathways during TiCl4 Reduction by Magnesium and Sodium Involving Electoronically Mediated Reaction' (in Japanese),
    T. H. Okabe, T. Uda, E. Kasai, and Y. Waseda:
    J. Jpn. Inst. Metals, vol.61, no.7 (1997) pp.610-618.
  139. 'Direct Evidence of Electoronically Mediated Reaction during TiCl4 Reduction by Magnesium' (in Japanese),
    T. Uda, T. H. Okabe, E. Kasai, and Y. Waseda:
    J. Jpn. Inst. Metals, vol.61, no.7 (1997) pp.602-609.
  140. 'New Method for Rare Metal Deoxidation- Development of Ultimate Deoxidation Process' (in Japanese),
    T. H. Okabe, E. Kasai, and Y. Waseda:
    Mater. Sci. Tech. (Kinzoku), Special Issue (1996) pp.133-140.
  141. 'New Scope of Materials Processing Research on Metallothermic Reduction - Applicaton of Electronicaly Mediated Reaction (EMR) Control to Titanium Production Process' (in Japanese),
    T. H. Okabe, T. Uda, E. Kasai, and Y. Waseda:
    Mater. Sci. Tech. (Kinzoku), Special Issue (1996) pp.123-132.
  142. 'Thermodynamic Properties of Oxygen in Yttrium-Oxygen Solid Solutions',
    T. H. Okabe, T. N. Deura, T. Oishi, K. Ono, and D. R. Sadoway:
    Metall. Mater. Trans. B, vol.27B (1996) pp.841-847.
  143. 'Electrochemical Deoxidation of Yttrium-Oxygen Solid Solutions',
    T. H. Okabe, T. N. Deura, T. Oishi, K. Ono, and D. R. Sadoway:
    J. Alloy. Compd., vol.237 (1996) pp.150-154.
  144. 'Technology of Deoxidation of Titanium' (in Japanese),
    T. Oishi, T. H. Okabe, and K. Ono:
    Keikinzoku (J. Japan Institute of Light Metals), vol.43, no.7 (1993) pp.392-400.
  145. 'Electrochemical Deoxidation of Titanium',
    M. Nakamura, T. H. Okabe, T. Oishi, and K. Ono:
    Molten Salt Chemistry and Technology 1993 (Proceedings of the International Symposium, The Electrochemical Society Inc.) [Hawaii, U.S.A., May 1993] (1993) pp.529-540.
  146. 'Preparation and Characterization of Extra-Low-Oxygen-Titanium',
    T. H. Okabe, M. Nakamura, T. Ueki, T. Oishi, and K. Ono:
    Titanium Science and Technology, (Proceedings of the 7th World Conference on Titanium, The Minerals, Metals & Materials Society) [San Diego, U.S.A, Jun. 28-Jul. 2, 1992] (1993) pp.2273-2280.
  147. 'Deoxidation of TiAl Intermetallic Compounds',
    T. H. Okabe, K. Fujiwara, T. Oishi, and K.Ono:
    Titanium Science and Technology (Proceedings of the 7th World Conference on Titanium, The Minerals, Metals & Materials Society) [San Diego, U.S.A, Jun. 28-Jul. 2, 1992] (1993) pp.1211-1218.
    *** Student Poster Award ***
  148. 'Electrochemical Deoxidation of Titanium',
    T. H. Okabe, M. Nakamura, T. Oishi, and K. Ono:
    Metall. Trans. B, vol.24B (1993) pp.449-455.
  149. 'Preparation of Extra-Low-Oxygen-Titanium by Calcium Halide Flux Deoxidation' (in Japanese),
    T. H. Okabe, M. Nakamura, T. Ueki, T. Oishi, and K. Ono:
    Bull. Japan Inst. Metals, vol.31, no.4 (1992) pp.315-317.
  150. 'Deoxidation of Titanium Aluminide by Ca-Al Alloy under Controlled Aluminum Activity',
    T. H. Okabe, T. Oishi, and K. Ono:
    Metall. Trans. B, vol.23B (1992) pp.583-590.
  151. 'A Fundamental Study on the Preparation of Niobium Aluminide Powders by Calciothermic Reduction',
    T. H. Okabe, K. Fujiwara, T. Oishi, and K. Ono:
    Metall. Trans. B, vol.23B (1992) pp.415-421.
  152. 'Preparation and Characterization of Extra-Low-Oxygen Titanium',
    T. H. Okabe, T. Oishi, and K. Ono:
    J. Alloy. Compd., vol.184 (1992) pp.43-56.
  153. 'Thermodynamic Properties of Dilute Titanium-Oxygen Solid Solution in Beta Phase',
    T. H. Okabe, R. O. Suzuki, T. Oishi, and K. Ono:
    Mater. Trans. JIM, vol.32, no.5 (1991) pp.485-488.
  154. 'A Fundamental Study on Preparation of Al3Ti Powders by Calciothermic Reduction of Oxides',
    R. O. Suzuki, T. Ueki, M. Ikezawa, T. H. Okabe, T. Oishi, and K. Ono:
    Mater. Trans. JIM, vol.32, no.3 (1991) pp.272-277.
  155. 'Production of Extra Low Oxygen Titanium by Calcium-Halide Flux Deoxidation' (in Japanese),
    T. H. Okabe, R. O. Suzuki, T. Oishi, and K. Ono:
    Tetsu-to-Hagane, vol.77, no.1 (1991) pp.93-99.
  156. 'Preparation of Extra Low Oxygen Titanium by the Calcium-Halide Flux Deoxidation Process',
    T. H. Okabe, R. O. Suzuki, T. Oishi, and K. Ono:
    Proceedings of the International Conference on Titanium Products and Applications (Titanium Development Association) [Florida, U.S.A., Oct. 1-5, 1990] (1990) pp.822-829.
  157. 'Production of Titanium Powders by the Calciothermic Reduction of TiO2' (in Japanese),
    K. Ono, T. H. Okabe, M. Ogawa, and R. Suzuki:
    Tetsu-to-Hagane, vol.76, no.4 (1990) pp.568-575.
  158. 'Preparation of TiAl and Ti3Al powders by Calciothermic Reduction of Oxides',
    R. O. Suzuki, M. Ikezawa, T. H. Okabe, T. Oishi, and K. Ono:
    Mater. Trans. JIM, vol.31, no.1 (1990) pp.61-68.
  159. 'Electron Beam Melting of Titanium and Quality Evaluation by Secondary Ion Mass Spectrometry',
    K. Ono, T. H. Okabe, N. Maeda, and Y. Ueda:
    Proceedings of the Conference on Electron Beam Melting and Refining [Reno, U.S.A.] (1989) pp.123-133.