Fe is a candidate to replace Co in WC hardmetals, due its lower cost and toxicity. Here, WC-FeCr hardmetal was compression tested at 900–1200 °C. Particular attention paid the steady-state creep rates stress-exponents (n) during isostress treatments. Three regimes of n are observed. Two these were previously reported for WC-Co: power law (n ≈ 3) stresses below ~100 MPa; grain boundary sliding 1...

In this study, WC-Co-TiC/304 stainless steel composites were successfully prepared by compression at room temperature and vacuum sintering in a special mold. Through analysis comparison of the microstructure, density, particle size composite, effects different WC contents on structure properties WC-Co-TiC studied. The results show that among when content is 60%, distribution each relatively uni...

Co nanoparticles (Co NPs) and nanoscale tungsten carbide (WC) are successfully synthesized simultaneously with mesoporous structured carbon black (C) using an innovative simple method, which is known as solution plasma processing (SPP), and NPs are also loaded onto carbon black at the same time by SPP. The introduction of Co NPs led to not only superior oxygen reduction reaction (ORR) activity ...