个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:化工学院
学科:化学工程. 水科学与技术
办公地点:西部校区化工综合楼A503
联系方式:gchliu@dlut.edu.cn
电子邮箱:gchliu@dlut.edu.cn
Nanomechanical and Electrochemical Properties of Diamond-Like Carbon (DLC) Films Deposited by Plasma Enhanced Chemical Vapor Deposition (PECVD) Technique
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论文类型:期刊论文
发表时间:2010-08-01
发表刊物:PLASMA SCIENCE & TECHNOLOGY
收录刊物:SCIE、EI
卷号:12
期号:4
页面范围:461-465
ISSN号:1009-0630
关键字:PECVD; diamond-like carbon (DLC); Si/SiC intermediate layers; stainless steel substrates
摘要:Diamond-like carbon (DLC) films was deposited successfully on stainless steel substrates with Si/SiC intermediate layers by combining plasma enhanced unbalanced magnetron sputtering physical vapor deposition (PEUMS-PVD) and microwave electron cyclotron resonance plasma enhanced chemical vapor deposition (MW-ECRPECVD) techniques. The effect of silicon dopant on the structure, morphology, nano mechanical properties and electrochemical behavior of DLC films were investigated by Raman spectroscopy, nano-indentation, atomic force microscopy (AFM) and potentiodynamic method and electrochemical impedance spectroscopy (EIS). It showed that the incorporated silicon atoms substituted sp(2)-bonded carbon atoms in the ring structures, promoting the formation of sp(3)-bonds. The structural transition from C-C to C-Si bonds resulted in the relaxation of the residual stress, leading to the decrease in films hardness. The DLC films with Si/SiC intermediate layers led to significant improvement in the corrosion resistance of the stainless steel substrate due to effective isolation and good chemical inertness of the DLC films.