Pre-alloyed powder and its use in the manufacture of diamond...

Details Pre-alloyed powder and its use in the manufacture of diamond... Pre-alloyed powder and its use in the manufacture of diamond...

B - Operations, Transporting

22

F

B22F 3/10 (2006.01) B22F 1/00 (2006.01) B24D 3/06 (2006.01) C22C 26/00 (2006.01)

Patent

CA 2239406

The powder has an average particle size of less than 8 µm and a loss of mass by reduction in hydrogen of less than 3 % and it contains 10 - 80 % Fe, up to 40 % Co, up to 60 % Ni and up to 15 % M, M being present, at least partially, in the oxidized state and representing one or more of the elements Mn, Cr, V, Al, Mo and Ti, the balance being unavoidable impurities. This powder may be sintered at 650 - 1000 °C to give a matrix having a high hardness.

La poudre a une granulométrie moyenne inférieure à 8 mu m, une perte de masse par réduction dans l'hydrogène inférieure à 3 % et elle contient 10 - 80 % de Fe, jusqu'à 40 % de Co, jusqu'à 60 % de Ni et jusqu'à 15 % de M, M étant présent, au moins partiellement à l'état oxydé et représentant un ou plusieurs des éléments Mn, Cr, V, Al, Mo et Ti, le restant étant constitué par des impuretés normalement présentes. Cette poudre peut être frittée à 650 - 1000 DEG C pour donner une matrice d'une grande dureté.

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