Effect of Processing on the Densification and Properties of Thermal Management Materials

摘要

Tungsten-copper alloys exhibit vastly different densification behavior with the processing conditions. In this study, the effect of milling media on densification, oxygen content and the thermal properties of W-15Cu are evaluated. Experiments were conducted with W and copper oxide powder milled using carbide milling media and tungsten milling media and sintered to different temperatures. Results indicate that oxygen content below 0.04 wt.% is not detrimental to the thermal properties. Instead, transition metal impurities have a strong impact on the density and the ensuing thermal properties.