Process for synthesizing compounds from elemental powders and product
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United States of America Patent
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Dec 14, 1993
Grant Date -
N/A
app pub date -
Oct 26, 1990
filing date -
Oct 26, 1990
priority date (Note) -
Expired
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Abstract
A process for synthesizing intermetallic compounds from elemental powders. The elemental powders are initially combined in a ratio which approximates the stoichiometric composition of the intermetallic compound. The mixed powders are then formed into a compact which is heat treated at a controlled rate of heating such that an exothermic reaction between the elements is initiated. The heat treatment may be performed under controlled conditions ranging from a vacuum (pressureless sintering) to compression (hot pressing) to produce a desired densification of the intermetallic compound. In a preferred form of the invention, elemental powders of Fe and Al are combined to form aluminide compounds of Fe.sub.3 Al and FeAl.
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