Ronald M Cox

US Patent:

44759592, Oct 9, 1984

Filed:

Jul 13, 1983

Appl. No.:

6/513516

Inventors:

Anthony Liang - Belmont CA
Ronald W. Cox - Menlo Park CA

Assignee:

GTE Products Corporation - Stamford CT

International Classification:

B23K 3534

US Classification:

148 24

Abstract:

Organic vehicle systems are described which are used in brazing alloy pastes. A principal feature of the systems is used of non-aqueous solvents to avoid reactions with alloy constituents.

US Patent:

43257542, Apr 20, 1982

Filed:

Dec 15, 1980

Appl. No.:

6/216239

Inventors:

Howard Mizuhara - San Mateo CA
Ronald W. Cox - Menlo Park CA

Assignee:

GTE Products Corporation - Stamford CT

International Classification:

B23K 3522
C23C 112

US Classification:

148 22

Abstract:

A flexible brazing alloy tape with a binder having less than 3% by weight total organic content and no more than about 1% by weight residual ash after melting is provided by use of a polyacrylic acid polymer, glycerol and water as a vehicle in which the powdered alloy is dissolved to form a slurry prior to casting. The polyacrylic acid polymer has a relatively low viscosity defined by a molecular weight of about 450,000. The slurry is deposited on a substrate and is dried and the resulting flexible low organic self-supporting tape is removed from the substrate to be formed into desired shapes as preforms for brazing. Alternatively a brazing alloy tape comprising a binder having a similarly low total organic content is produced by mixing the powdered alloy with polyvinyl alcohol, glycerol and water and thereafter casting the tape as described above.