Solid solution tungsten carbide powders and applications thereof
AssigneeKennametal Inc.
InventorsOladapo O. Eso, Amanda Brown
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Abstract
An improved tungsten carbide powder comprises (W,Cr) C solid solution phase for oxidation resistance at high temperatures. The improved tungsten carbide powders may be formed by carburizing a mixture of tungsten powder, carbon powder, and Cr2O3 powder. The tungsten carbide powder herein may be used to form ready-to-press (RTP) or grade powders. These RTP may be used to form articles, including articles that require excellent oxidation resistance at high temperature. One such component is a seal ring for a liquid battery.
Claims21
A tungsten carbide powder comprising a (W,Cr) C solid-solution phase.
A ready-to-press (RTP) powder comprising:
- a tungsten carbide powder comprising a (W,Cr) C solid-solution phase.
- a metallic binder.
A manufacturing method comprising:
- carburizing a mixture of tungsten powder, carbon powder, and chromium oxide to form a tungsten carbide powder comprising a (W,Cr) C solid-solution phase, wherein the mixture comprises at least 1 wt. % of the chromium oxide.
Dependencies are inferred from the claim text.