Wear and corrosion properties of WC-10％CoCrFeNi cemented carbide
To solve the conflict between the mechanical properties and corrosion resistance of WC-Ni cemented carbide,WC-10％CoCrFeNi cemented carbide was prepared using CoCrFeNi high-entropy alloy as the bonding phase.A comparative study of the wear and corrosion properties of WC-10％CoCrFeNi and WC-10％Ni cemented carbides was carried out with the aid of Vickers hardness tester,friction and wear tester,electrochemical workstation,scanning electron microscope and X-ray diffractometer.The results show that WC-10％CoCrFeNi has higher hardness and fracture toughness values than those of WC-10％Ni cemented carbides,and has lower friction coefficient and wear rate during dry friction sliding wear,and shows excellent corrosion resistance during electrochemical corrosion with 3.5％NaCl solution as the medium.
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