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US 9,919,358 B2Granted
Sintered molybdenum carbide-based spray powder
AssigneeH.C. Starck GmbH
InventorBenno Gries
Life of this patent
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Abstract
A sintered spray powder includes from 5 to 50 wt.-% of a metallic matrix, from 50 to 95 wt.-% of a hard material, and from 0 to 10 wt.-% of a wear-modifying oxide, each based on the total weight of the sintered spray powder. The metallic matrix comprises from 0 to 20 wt.-% of molybdenum based on the total weight of the metallic matrix. The hard material comprises at least 70 wt.-% of molybdenum carbide based on the total weight of the hard material. An average particle diameter of the molybdenum carbide in the sintered spray powder is <10 μm, determined in accordance with ASTM E112.
Claims14
A sintered spray powder comprising:
- from 5 to 50 wt.-% of a metallic matrix, based on the total weight of the sintered spray powder, the metallic matrix comprising from 0 to 20 wt.-% of molybdenum, based on the total weight of the metallic matrix;
- from 50 to 95 wt.-% of a hard material, based on the total weight of the sintered spray powder, the hard material comprising at least 70 wt.-% of molybdenum carbide based on the total weight of the hard material, an average particle diameter of the molybdenum carbide in the sintered spray powder being <10 μm, determined in accordance with ASTM E112;
- 0 to 10 wt.-% of a wear-modifying oxide, based on the total weight of the sintered spray powder;
- and
- boron in an amount of 0.001 to 1.4 wt.-%, based on the total weight of the metallic matrix.
2 more elements
Dependencies are inferred from the claim text.