期刊
APPLIED SURFACE SCIENCE
卷 412, 期 -, 页码 366-373出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2017.03.214
关键词
Sandblasting; Diamond films; Martensite; Residual stress
类别
资金
- National Science Foundation of China [51104131]
- International Science and Technology Cooperation Program of China [2014DFR51160]
We firstly used sandblasting to treat austenite stainless steel and then deposited a Cr/CrN interlayer by close field unbalanced magnetron sputtering on it. After that, diamond films were prepared on the inter layer. It is found that the sandblasting process induces phase transition from austenite to martensite in the surface region of the stainless steel, which decreases thermal stress in diamond films due to lower thermal expansion coefficient of martensite phase compared with that of austenite phase. The sandblasting also makes stainless steel's surface rough and the Cr/CrN interlayer film inherits the rough surface. This decreases the carburization extent of the interlayer, increases nucleation density and modifies the stress distribution. Due to lower residual stress and small extent of the interlayer's carburization, the diamond film on sandblast treated austenite stainless steel shows enhanced adhesion strength. (C) 2017 Elsevier B.V. All rights reserved.
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