Research Progress of W/ZrC Ultra-high Temperature Cermets

摘要

Combined of refractory metal W and ultra-high temperature ceramic ZrC, W/ZrC ultra-high temperature cermets have exhibited high temperature strength, excellent resistance to thermal shock and ablation, possessing a wide application prospect in high temperature fields. At present, W/ZrC cermets are mainly fabricated by Hot Pressing (HP), Spark Plasma Sintering (SPS), in Situ Reactive Sintering (SRS) and Displacive Compensation of Porosity (DCP). Characters and developments of all these fabrications are reviewed in this paper, and a comparison of advantages and shortages between them is made, also the properties of W/ZrC cermets are analyzed. At last, the development directions of future work are prospected.