Specialized metallurgical processes – compositions for use therei – Processes – Producing or purifying free metal powder or producing or...
Patent
1989-10-26
1991-07-16
Dean, R.
Specialized metallurgical processes, compositions for use therei
Processes
Producing or purifying free metal powder or producing or...
75352, C22C 100
Patent
active
050321749
ABSTRACT:
The present invention relates to powder particles consisting of hard principles and binder metal for the manufacture of superior, uniquely fine-grained hard material alloys and to a procedure for the preparation of said particles.
The preparation is performed in an economical way because the procedure starts from conventional melt metallurgical raw materials. A pre-alloy consisting of hard principle forming and binder phase forming elements is subjected to a heat treatment such as nitriding and carburizing after being crushed. The final product is particles composed by hard principle phases and binder metal phases formed "in situ" in an effective binding.
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Bizhev et al., "Production of Nitrided Iron-Chromium-Manganese-. . . ", Metalurgiya (Sofia), 37(11), 1982, pp. 8-10.
Ekemar Carl S. G.
Oskarsson Rolf G.
Dean R.
Santrade Limited
Schumaker David W.
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