Composite powders sprayable to form abradable seal coatings

Details Composite powders sprayable to form abradable seal coatings Composite powders sprayable to form abradable seal coatings

B - Operations, Transporting

22

F

75/3, 117/53, 27

B22F 1/02 (2006.01) B05D 1/10 (2006.01) C23C 4/06 (2006.01)

Patent

CA 1141569

ABSTRACT OF THE DISCLOSURE A composite powder sprayable by thermal spraying onto a substrate to form an abradable seal coating with suitable strength and erosion resistance. Each powder par- ticle has a core of non-metallic solid material surrounded by a layer of metallic material selected from the group con- sisting of nickel and nickel alloys. At least about 95% of the particles have a size less than about 150 microns, at least about 50 to about 90% of the particles have a size greater than about 75 microns, and less than about 10% of the par- ticles have a size less than about 45 microns.

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