High-purity hard gold alloy and method of manufacturing same

Details High-purity hard gold alloy and method of manufacturing same High-purity hard gold alloy and method of manufacturing same

1998-12-08

2000-05-16

Yee, Deborah

Metal treatment

Stock

Noble metal base

148678, 420507, C22C 502, C22F 114

Patent

active

060632135

ABSTRACT:
A method of manufacturing a high-purity gold alloy for making an electronic member, a dental member or a decorative member. The method includes subjecting a high-purity gold alloy having a Gd content of 1 to 49.9 ppm contained in 99.98 weight % or more gold to a solution heat treatment in which the elements of the high-purity gold alloy are uniformly dispersed at a temperature higher than a solubility curve and then rapidly cooled, and then to an age hardening treatment, before or after a working process for working the high-purity gold alloy into a desired line shape or other desired shape. The age hardening treatment can be performed if the working process is not carried out.

REFERENCES:
patent: 5071619 (1991-12-01), Hosoda et al.
patent: 5702814 (1997-12-01), Honada et al.

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