Electrolysis: processes – compositions used therein – and methods – Electrolytic synthesis – Utilizing fused bath
Reexamination Certificate
2008-03-04
2008-03-04
Wilkins, III, Harry D (Department: 1753)
Electrolysis: processes, compositions used therein, and methods
Electrolytic synthesis
Utilizing fused bath
C205S357000, C205S360000
Reexamination Certificate
active
10416909
ABSTRACT:
A method for the production of an intermetallic compound (M1Z) involves treating a solid precursor material comprising three or more species, including first and second metal or metalloid species (M1, Z) and a non-metal species (X), by electro-deoxidation in contact with a melt comprising a fused salt (M2Y) under conditions whereby the non-metal species dissolves in the melt. The first and second metal or metalloid species form an intermetallic compound. The method is performed in a cell comprising a cathode of the precursor material (2), which is immersed in a melt (8) contained in a crucible (6) for electro-deoxidation.
REFERENCES:
patent: 4239819 (1980-12-01), Holzl
patent: 5135782 (1992-08-01), Rostoker et al.
patent: 5211775 (1993-05-01), Fisher et al.
patent: 5310476 (1994-05-01), Sekhar et al.
patent: 5595612 (1997-01-01), Dingremont
patent: 6117208 (2000-09-01), Sharma
patent: 6712952 (2004-03-01), Fray et al.
patent: 2004/0159559 (2004-08-01), Fray et al.
patent: 13759 (1904-06-01), None
patent: 626636 (1949-07-01), None
patent: 635267 (1950-04-01), None
patent: 11142585 (1999-05-01), None
patent: WO 99/64638 (1999-12-01), None
patent: WO 01/62995 (2001-08-01), None
patent: WO 01/62996 (2001-08-01), None
Hirota, K. et al. “Electrochemical Deoxidation of of RE-O (RE=Gd, Tb, Dy, Er) Solid Solutions”,Journal of Alloys and Compounds, Jan. 15, 1999, pp. 101-108, vol. 282, No. 1-2.
Okabe, T. H. et al. “Electrochemical Deoxidation of Yttrium-Oxygen Solid Solutions”,Journal of Alloys and Compounds, Apr. 15, 1996, pp. 150-154, vol. 237.
Okabe, T. H. et al. “Electrochemical Deoxidation of Titanium”, Metallurgical Transactions B., Jun. 1993, pp. 449-455, vol. 24B.
Chen, G.Z. et al. “Direct electrochemical reduction of titanium dioxide to titanium in molten calcium chloride”Nature, Sep. 21, 2000, pp. 361-364, vol. 407.
Chen, G. Z. et al. “Novel Direct Electrochemical Reduction of Solid Metal Oxides to Metals using Molten Calcium Chloride as the Electrolyte”Special Proceedings Volume, Molten Salt Forum vol. 7, Progress in Molten Salt Chemistry vol. 1, Aug. 20-25, 2000, pp. 157-161, eds. R. W. Berg and H.A. Hjuler, Elsevier 2000.
Ferro, P. D. et al. “Application of Ceramic Membrane in Molten Salt Electrolysis of CaO-CaCl2”Waste Management, 1997, pp. 451-461, vol. 17, No. 7.
Okabe, T. H. et al. “Thermodynamic Properties of Ln-O (Ln=La, Pr, Nd) Solid Solutions and Their Deoxidation by Molten Salt Electrolysis”Shigen-Lo-Sozai, 1998, pp. 813-818, vol. 114.
Okabe, T. H. et al. “Production of niobium powder by electronically mediated reaction (EMR) using calcium as a reductant”Journal of Alloys and Compounds, 1999, pp. 200-210, vol. 288.
Okabe, T. H. et al. “Preparation and characterization of extra-low-oxygen titanium”Journal of Alloys and Compounds, 1992, pp. 43-56, vol. 184.
Okabe, T. H. et al. “Deoxidation of Titanium Aluminide by Ca-Al Alloy under Controlled Aluminum Activity”Metallurgical Transactions B, Oct. 1992, pp. 583-590, vol. 23B, No. 5.
Oki, T. et al. “Reduction of Titanium Dioxide by Calcium in Hot Cathode Spot”Department of Metallurgical Engineering, May 31, 1967, pp. 164-166.
Opie, W. R. et al. “A Basket Cathode Electrolytic Cell for Production of Titanium Metal”Transactions of the Metallurgical Society of AIME, Aug. 1960, pp. 646-649, vol. 218.
Swinkels, D. A. J. “Thermal Batteries” InAdvances in Molten Salt Chemistry 1, ed. J. Braustein et al., 1971, pp. 188-191, Plenum Press.
Ward, R. G. et al. “The Electrolytic Removal of Oxygen, Sulphur, Selenium, and Tellurium from Molten Copper”Journal of the Institute of Metals, 1961-1962, pp. 6-12, vol. 90.
“Extra-low oxygen titanium@ prodn.—by heating mixt. of titanium@ raw material and high purity flux, removing flux with acid and discharging, for structural part” 1992, XP-002244274, abstract only.
Mishra, B. et al. “Diffusion Coefficient of Oxygen Ions in Molten Calcium Chloride” 9th Symposium on Molten Salts,Electrochem. Soc., 1994, pp. 697-704.
Mishra, B. et al. “Application of Molten Salts in Pyrochemical Processing of Reactive Metals”Moltens Salts, Electrochem. Soc., 1992, pp. 184-203, vol. 92-16, ed. R. J. Gale et al.
Chen George Zheng
Copcutt Robert Charles
Fray Derek John
Cambridge Enterprise Limited
Saliwanchik Lloyd & Saliwanchik
Wilkins, III Harry D
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