Method of making a composite powder comprising nanocrystallites

Details Method of making a composite powder comprising nanocrystallites Method of making a composite powder comprising nanocrystallites

1988-12-05

1992-09-22

Roy, Upendra

Metal treatment

Process of modifying or maintaining internal physical...

Treating loose metal powder, particle or flake

75255, 148403, 419 12, 419 14, 419 30, 419 33, 501 94, C22C 100

Patent

active

051493810

ABSTRACT:
A process for the production of a powder having a nanocrystalline structure from powders of at least two materials of the groups including metals, metallic compounds, and ceramic materials, in a composition which tends to develop an amorphous phase. The starting powders are subjected to high stresses of at least 12 G in a neutral or reducing atmosphere at about 20.degree. C. until there are no crystallites larger than about 10 nm.

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