Copper alloys capable of spinodal decomposition and a method of obtaining such alloys
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United States of America Patent
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Mar 23, 1993
Grant Date -
N/A
app pub date -
May 6, 1991
filing date -
May 11, 1990
priority date (Note) -
Expired
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Abstract
A method is disclosed for manufacturing a finished product which consists at least partially of a copper nickel and tin based alloy which has undergone spinodal decomposition. A liquid bath of the Cu Ni Sn based alloy is prepared containing also titanium and possibly lead. A semi-finished product is formed by spray-deposition of this alloy onto a backing then transformed with an annealing stage followed by rapid tempering. The product obtained after transformation of the semi-finished product is subjected to a heat annealing treatment in order to carry out spinodal decomposition of the part of the said product which is constituted by Cu Ni Sn based alloy, to obtain a finished product. A semi-finished product or product is obtained by this method. Connectors and machinable products based on Cu Ni Sn and of high and homogeneous hardness are manufactured.
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