Method for removing oxide contamination from titanium diboride p

Details Method for removing oxide contamination from titanium diboride p Method for removing oxide contamination from titanium diboride p

1983-04-26

1984-06-05

Doll, John

Chemistry of inorganic compounds

Boron or compound thereof

Binary compound

423 76, 423277, 423472, 423492, 423659, 501 97, C01B 3504

Patent

active

044527675

ABSTRACT:
A method for removing oxide contamination from titanium diboride powder involves the direct chemical treatment of TiB.sub.2 powders with a gaseous boron halide, such as BCl.sub.3, at temperatures in the range of 500.degree.-800.degree. C. The BCl.sub.3 reacts with the oxides to form volatile species which are removed by the BCl.sub.3 exit stream.

REFERENCES:
patent: 3853541 (1974-12-01), Othmer
patent: 4288411 (1981-09-01), Holland et al.
Othmer, D. F. et al., "Metal Ordering by Chlorine Affinities for Oxides", Metallurgical Society of AIME Light Metals Committee Proceedings of the Sessions, vol. 1, 1973, pp. 271-298.
The Condensed Chemical Dictionary, Nineth Edition, Van Nostrand Reinhold Company, New York, 1977, p. 865.

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