Method of making a composite powder comprising nanocrystallites embedded in an amorphous phase
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United States of America Patent
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Sep 22, 1992
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N/A
app pub date -
Dec 5, 1988
filing date -
Dec 4, 1987
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Expired
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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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