Ceramic materials in powder form

Details Ceramic materials in powder form Ceramic materials in powder form

C - Chemistry, Metallurgy

04

B

261/24

C04B 35/599 (2006.01) C01B 21/06 (2006.01) C01B 21/082 (2006.01) C04B 35/597 (2006.01)

Patent

CA 2331470

The invention relates to a ceramic material in powder form comprising particles having an average particle size of 0.1 to 30 µm and each formed of an agglomerate of grains with each grain comprising a nanocrystal of a ceramic material of the formula: Si3-x Al x O y N z (I) wherein 0 <= x <= 3, 0 <= y <= 6 and 0 <= z <= 4, with the proviso that when x is 0 or 3, y cannot be 0. The ceramic material in powder form according to the invention is suitable for use in the production of ceramic bodies by powder metallurgy, as well as in the formation of heat-resistant coatings by thermal deposition. The ceramic bodies and coatings obtained have improved resistance to thermal shocks.

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