Method of manufacturing powder bodies of borides, carbides or ni

Details Method of manufacturing powder bodies of borides, carbides or ni Method of manufacturing powder bodies of borides, carbides or ni

1974-10-25

1977-02-08

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

106 733, C04B 3560, C04B 3558

Patent

active

040072517

ABSTRACT:
For hydrostatically hot pressing bodies of borides, carbides or nitrides of titanium, zirconium or chromium from a powder having an excess of boron, carbon or nitrogen, the power is enclosed in a sealed container of a material which forms compounds with boron, carbon or nitrogen which have a melting point at least equal to that of the material of the container. Container materials may be for example metals from Group IVb of the Periodic System, particularly titanium and zirconium or their alloys in the case of titanium or chromium compounds and zirconium or zirconium base alloys in the case of zirconium compounds. This allows pressing at temperatures of up to 1700.degree.-1800.degree. C, which is high enough to cause bonding between the powder grains.

REFERENCES:
patent: 3003885 (1961-10-01), Mandorf
patent: 3419935 (1969-01-01), Pfeiler et al.
Brewer et al., "A Study of the Refractory Borides," J. Am. Cer. Soc., vol. 34, 6, pp. 173-179 (1951).

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