Flame spray powder

Details Flame spray powder Flame spray powder

C - Chemistry, Metallurgy

09

D

117/53, 75/6

C09D 5/46 (2006.01) C22C 1/04 (2006.01) C22C 33/02 (2006.01) C23C 4/06 (2006.01)

Patent

CA 1192422

ABSTRACT OF THE DISCLOSURE A free-flowing self-bondable flame spray powder derived from an atomized alloy powder is provided in which the particles are characterized by aspherical shapes and have an average particle size within the range of about plus 400 mesh to minus 100 mesh. The aspherically shaped powder is further characterized by a specific surface of about 180 cm2/gr and higher and has a composi- tion consisting essentially of a solvent metal alloy selected from the iron-group base alloys consisting of nickel-base, iron- base, and cobalt-base alloys containing by weight about 5% to 35% chromium, the solvent metal alloy having a negative free energy of oxidation ranging up to about 80,000 calories per gram atom of oxygen referred to 25°C and containing about 5% to 15% by weight of a highly oxidizable solute metal whose negative free energy of oxidation is at least about 100,000 calories per gram atom of oxygen referred to 25°C.

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