Method for producing a nitride based hard metal powder
OwnerGerd Weissmaninventor
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Abstract
Hard metal carbide alloys are produced by nitriding a mixture of finely divided refractory metals selected from group VI of the periodic table of elements, a refractory metal selected from group IV and V of the periodic table of elements and a metal selected from the iron group, under temperatures below 1250.degree. for a time less than 12 hours.
Claims18
A method for nitriding refractory metals for the production of low oxygen nitride based hard metal alloys comprising the steps of admixing (A) a finely divided metal selected from the group consisting of the VI group of the periodic table of elements, (B) a finely divided refractory metal selected from the group consisting of metals of the IV or V groups of the periodic table of elements or mixtures thereof and (C) a finely divided auxiliary metal selected from the group consisting of the iron metals, and reacting said mixture with a gas containing nitrogen at a temperature and time sufficient to nitride said mixture.
The method of producing a hard metal alloy comprising the steps of forming a nitrided reaction product of an admixture of (A) a finely divided metal selected from the group consisting of the VI group of the periodic table of elements, (B) a finely divided refractory metal selected from the group consisting of metals of the IV or V groups of the periodic table of elements or mixtures thereof and (C) a finely divided auxiliary metal selected from the group consisting of the iron metals by reacting said admixture with a gas containing nitrogen at a temperature and time sufficient to nitride said admixture, and thereafter sintering said reaction product.
Dependencies are inferred from the claim text.