Rosaire E Marcotte

US Patent:

48697575, Sep 26, 1989

Filed:

Apr 13, 1987

Appl. No.:

7/037533

Inventors:

Thomas W. Eagar - Belmont MA
Dwarika P. Agarwal - Attleboro MA
Laura L. Bourguignon - East Providence RI
Rosaire Marcotte - Attleboro MA

Assignee:

Leach & Garner Company - Attleboro MA

International Classification:

C22F 114
C22C 508

US Classification:

148158

Abstract:

A unique hardenable silver alloy is provided which is solution annealed and preferably age-hardened to yield a silver alloy of exceptional and reversible hardness. The alloys utilize intermetallic systems comprising; silver, copper, combined with lithium alone or tin alone in varying percent amounts, or silver, copper, lithium and either tin or antimony, or silver, copper, lithium, tin and antimony, or silver, copper, lithium, tin and bismuth, or silver, copper, lithium, tin, bismuth and antimony.

US Patent:

48103080, Mar 7, 1989

Filed:

Jan 19, 1988

Appl. No.:

7/145050

Inventors:

Thomas W. Eagar - Belmont MA
Dwarika P. Agarwal - Attleboro MA
Laura L. Bourguignon - East Providence RI
Rosaire Marcotte - Attleboro MA

Assignee:

Leach & Garner Company - Attleboro MA

International Classification:

C22F 114
C22C 508

US Classification:

148158

Abstract:

A unique hardenable silver alloy is provided which is solution annealed and preferably age-hardened to yield a silver alloy of exceptional and reversible hardness. The alloys utilize intermetallic systems comprising silver, copper, combined with lithium alone or tin alone in varying percent amounts, or silver, copper, lithium and either tin or antimony, or silver, copper, lithium and either aluminum or indium or zinc, or silver, copper, antiomony and either aluminum or indium or zinc, or silver, copper, lithium, tin and antimony, or silver, copper, lithium, tin and bismuth, or silver, copper, lithium, tin, bismuth and antimony.