Method for producing intermetallic compound

Details Method for producing intermetallic compound Method for producing intermetallic compound

1997-04-22

1999-10-26

Ip, Sikyin

Metal treatment

Process of modifying or maintaining internal physical...

Producing or treating layered, bonded, welded, or...

148565, C21D 109

Patent

active

059721332

ABSTRACT:
At least one intermetallic compound A.sub.m1 B.sub.n1 (n1/m1>n0/m0) having a constitutional ratio of a metal B higher than that of an intermetallic compound A.sub.m0 B.sub.n0 is melted two or more times in a high vacuum atmosphere by using an electron beam. The metal B is gradually evaporated in accordance with passage of melting time. Thus, the composition of the intermetallic compound can be adjusted to be A.sub.m0 B.sub.n0. NbAl.sub.3 and Nb.sub.2 Al are used as starting materials, which are heated to an approximately intermediate temperature between melting points of them to obtain a single-phase of Nb.sub.2 Al. Alternatively, Nb.sub.3 Al and Nb.sub.2 Al are used as starting materials, which are heated to an approximately intermediate temperature between melting points of them to obtain a single-phase of Nb.sub.3 Al. It is possible to perform purification for removing impurities, and it is easy to adjust the stoichiometric ratio of the intermetallic compound.

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