Infiltrated components
AssigneeOerlikon Metco (US) Inc.
InventorsAndrew BELL, Zhongming WANG, James VECCHIO, Bernard LAROUCHE, Justin Lee CHENEY, Zhe ZHANG
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Abstract
A method for manufacturing articles comprising heat-treated tungsten carbide particles in a matrix of a binding alloy is provided. The method comprises liquid metal infiltration. The tungsten carbide particles are preferably spheroidal, and the binding alloy preferably comprises copper. The tungsten carbide particles are preferably heat-treated prior to, or during, the liquid metal infiltration process. Also provided are articles prepared by the method.
Claims25
A tungsten carbide powder comprising granules having a grain boundary area fraction of 20%-50%, and an average aspect ratio of less than 1.3.
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A metal matrix composite article comprising tungsten carbide particles in an alloy matrix,
- wherein the tungsten carbide particles have a grain boundary area fraction of 20%-50%, and an aspect ratio of 1 to 1.3, and include 10 wt % to 100 wt % heat-treated tungsten carbide particles based on total weight of the tungsten carbide particles, and
- the alloy matrix comprises 50-85 wt % copper.
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Dependencies are inferred from the claim text.