Plasma preparation method and tribological properties of diamond-like carbon coating on magnesium alloy AZ31 substrate

作     者：HAN BeiBei JU DongYing SATO Susumu ZHAO HuiJun 

作者机构：Department of Electronic EngineeringGraduate School of EngineeringSaitama Institute of TechnologyFukaya 369-0293Japan Advanced Science InstituteSaitama Institute of TechnologyFukaya 369-0293Japan Ningbo Institute of Materials Industry InnovationNingbo 315033China School of Mechanical EngineeringHangzhou Dianzi UniversityHangzhou 310018China Department of Information SystemSaitama Institute of TechnologyFukaya 369-0293Japan 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2019年第62卷第11期

页      面：1939-1947页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the Hi-Tech Research Center and the Nano Materials and Technology Project in Saitama Institutey of Technology  Japan 

主　　题：DLC film magnesium alloy plasma preparation hardness wear resistance 

摘      要：Magnesium alloys are light weight and exhibit good recyclability but suffer from low hardness and wear *** this study,the hardness and wear resistance of AZ31 magnesium alloy were improved by depositing diamond-like carbon(DLC)films as hard protective coatings using ion-beam-enhanced deposition with various CH4/H2 ratio,gas flow rates and accelerating *** supporting effect of the magnesium alloy was enhanced by the production of a graded interfacial layer which is composed of film atoms and substrate *** composition and mechanical properties of the DLC coatings were characterized using scanning electron microscopy(SEM),Raman spectroscopy,Rockwell test and *** tribological properties of the coating were also investigated using a frictional surface microscope with an in situ observation system and friction force *** DLC films were characterized by a lower intensity ratio of the D-peak to G-peak(ID/IG),higher hardness,and improved tribological properties when deposited at a lower accelerating voltage(6 kV).At the CH4/H2 ratio of 1:99 and 6 sccm/6 kV,minimum ID/IG values of 0.62,relatively low friction force value of 0.12 N,and a maximum hardness of 4056HV were attained *** addition,the DLC film exhibited improved wear resistance and a shallower wear track at this condition.