In-situ preparation of robust self-lubricating composite coating from thermally sprayed ceramic template  

作　　者：Zhichao WU Shuangjian LI Xiujuan FAN Florian VOGEL Jie MAO Xiaohui TU 

机构地区：[1]Institute of Advanced Wear&Corrosion Resistant and Functional Materials,Jinan University,Guangzhou 510632,China [2]Institute of New Materials,Guangdong Academy of Sciences,National Engineering Laboratory of Modern Materials Surface Engineering Technology,Guangzhou 510650,China

出　　处：《Journal of Advanced Ceramics》2023年第2期357-372,共16页先进陶瓷（英文）

基　　金：support from the National Natural Science Foundation of China (51905212);Guangdong Key Laboratory of Modern Surface Engineering Technology (2020B1212060049);Science and Technology Project of Guangdong Academy (2021GDASYL-20210103062);Young Scientific and Technological Talents Promotion Project of Guangzhou Science and Technology Association (X20210201061);Foshan Taoyuan Institute of Advanced Manufacturing (TYKF202203003).

摘　　要：The self-lubricating ceramic coatings that can control friction and wear have attracted researchers’widespread attention.However,the poor interfacial bonding between lubricants and ceramics and the deterioration of mechanical properties due to a tribological design limit their practical applications.Here,a robust self-lubricating coating was fabricated by an in-situ synthesis of MoS_(2)/C within inherent defects of thermally sprayed yttria-stabilized zirconia(YSZ)coatings.The edge-pinning by noncoherent endows hybrid coatings with excellent interfacial strength,increasing their hardness(HV)and cohesive strength.Furthermore,owing to the formation of a well-covered robust lubricating film at a frictional interface,a coefficient of friction(COF)can be reduced by 79.6%to 0.15,and a specific wear rate(W)drops from 1.36×10^(−3) to 6.27×10^(−7) mm^(3)·N^(−1)·m^(−1).Combining outstanding mechanical properties and tribological performance,the hybrid coating exhibits great application potential in controlling friction and wear.Importantly,this strategy of introducing the target materials into the inherent defects of the raw materials to improve the relevant properties opens new avenues for the design and preparation of composite materials.

关 键 词：self-lubricating ceramic coatings thermal spray in-situ synthesis MoS_(2)/C friction and wear mechanical properties 

分 类 号：TQ174.75[化学工程—陶瓷工业] TB33[化学工程—硅酸盐工业]