Process for producing spheroidized hard material powder

Details Process for producing spheroidized hard material powder Process for producing spheroidized hard material powder

B - Operations, Transporting

22

F

B22F 1/00 (2006.01) C01B 21/06 (2006.01) C01B 31/34 (2006.01) C22C 1/04 (2006.01) C23C 8/36 (2006.01)

Patent

CA 2320529

The spheroidized hard material powders are produced by introducing a finely ground basic mixture of hard material into a thermal, inductively coupled high-frequency plasma so that at the same time a chemical conversion reaction to form an alloy and/or chemical reaction and spheroidization of the particles in the plasma take place. The hard material mixture may be powder, granules, or a suspension or any combination thereof. Hence, a mixture consisting of Me x M y, wherein Me is a metal and M is a metalloid so that different metals and metalloids may be combined in the required metal-metalloid ratio is injected axially into an inductively coupled, high-frequency plasma with the aid of a carrier gas stream. The spheroidized hard material powder has excellent suitability for protection against wear.

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