Outstanding high-temperature oxidation-and wear-resistance of WC based cermets  

作　　者：Wentao Jiang Hao Lu Xuemei Liu Haibin Wang Dongyang Li Chao Liu Mingsheng Wang Xiaoyan Song 

机构地区：[1]Faculty of Materials and Manufacturing, Key Laboratory of Advanced Functional Materials, Ministry of Education of China, Beijing University of Technology, Beijing 100124, China [2]Department of Chemical & Materials Engineering, University of Alberta, Edmonton, Alberta T6G 2H5, Canada [3]Xiamen Tungsten Co., Ltd., Xiamen 361009, China

出　　处：《Journal of Materials Science & Technology》2023年第24期33-46,共14页材料科学技术（英文版）

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).

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.

关 键 词：CERMET Anti-oxidation performance Wear mechanism ZIRCONIA 

分 类 号：TQ174.758.12[化学工程—陶瓷工业]