Sulzer Metco (us) Inc.

Sulzer Metco Inc.

Komal Laul

Mitchell R Dorfman

Ronald Eugene Somoskey, Jr

Richard Karl Schmid

Luis F Correa

Christopher G Dambra

Ronald E Somoskey

Mitchell R Dorfam

Richard K Schmid

A pre-alloyed stabilized zirconia powder suitable for use in thermal barrier applications is formed by alloying zirconia with a stabilizer, such as yttria, and processing the alloyed stabilized zirconia to form a very fine powder. The raw powder is then spray-dried to produce an agglomerated powder having an average particle size suitable for use in spray coating applications. The resulting powder can be used in a thermal-spray application to produce a porous thermal barrier coating having a substantially decreased thermal conductivity when compared to conventional TB coatings, such those produced using plasma-densified powders.

Method of producing a pre-alloyed stabilized zirconia powder

A thermal spray powder consists of nickel, chromium and carbon. The chromium consists of a first portion and a second portion, the nickel being alloyed with the first portion in an alloy matrix. The second portion and the carbon are combined into chromium carbide substantially as Cr,C,or Cr,C,or a combination thereof, with the chromium carbide being in the form of precipitates between 0.1 &mgr;m and 5 &mgr;m distributed uniformly in the alloy matrix.

Method for preparing a thermal spray powder of chromium carbide and nickel chromium

A thermal spray powder consists of nickel, chromium and carbon. The chromium consists of a first portion and a second portion, the nickel being alloyed with the first portion in an alloy matrix. The second portion and the carbon are combined into chromium carbide substantially as Cr.sub.3 C.sub.2 or Cr.sub.7 C.sub.3 or a combination thereof, with the chromium carbide being in the form of precipitates between 0.1 .mu.m and 5 .mu.m distributed uniformly in the alloy matrix.

Powder of chromium carbide and nickel chromium

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East Meadow, NY, United States of America

Komal Laul