Patent · US Expired

Method of manufacturing powder bodies of borides, carbides or nitrides

US4007251A · kind A · utility

13Cited by

2References

3Claims

0Family size

Assignee

Allmanna Svenska Elektriska Aktiebolaget

Inventors

Sven-Erik Isaksson
Jan Adlerborn · Robertsfors, SE
Hans Larker · Robertsfors, SE

Key dates

Filing date	Oct 25, 1974
Grant date	Feb 8, 1977
Priority date	—
Expiry date	Oct 25, 1994

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B35/6455
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.