Outstanding high-temperature oxidation-and wear-resistance of WC based cermets
作者机构：Faculty of Materials and Manufacturing Key Laboratory of Advanced Functional Materials Ministry of Education of China Beijing University of Technology Beijing 100124 China Department of Chemical & Materials Engineering University of Alberta Edmonton Alberta T6G 2H5 Canada Xiamen Tungsten Co. Ltd. Xiamen 361009 China
出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)
年 卷 期：2023年第155卷第24期
页 面：33-46页
核心收录：
学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学]
基 金：supported by the Beijing Natural Science Foundation(No.2222046) the National Natural Science Foundation of China(Nos.92163107,52101003,52171061,and U20A20236) the National Key R&D Program of China(Nos.2021YFB3501502 and 2021YFB3501504),Haihe Laboratory in Tianjin(No.22HHXCJC00007) the International Research Cooperation Seed Fund of Beijing University of Technology(No.20211222).
主 题：Cermet Anti-oxidation performance Wear mechanism Zirconia
摘 要：The interaction between oxidation and frictional load can greatly deteriorate the performance of ceramic-metal composites.In this work,we used WC-Co cermet as a representative of ceramic-metal composites to study its wear failure behavior and protection effectiveness.It is found that a transition of wear mechanism from mechanical wear to oxidative wear occurs with increasing temperature.The addition of zirconia can significantly improve the anti-oxidation performance and load-bearing capacity of the cermet under the frictional load.This is mainly attributed to the modulation of the tribo-oxide layer constitutions and changes in surface morphology.The zirconia component facilitates the formation of a dense protective oxide layer and reduces the content of brittle oxides on the worn surface.Based on the understanding of the temperature-and oxidation-induced compositional and microstructural evolutions at the sliding contact surface and subsurface,a promising approach is proposed for developing ceramic-metal composites with high wear resistance and anti-oxidation capability.
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