Enhancement of tribological properties of DLC by incorporation of amorphous titanium using magnetron sputtering process

被引：23
作者：
Dhandapani, Vishnu Shankar [1 ,2 ,3 ]
Kang, Kyoung-Mo [1 ,2 ]
Seo, Kuk-Jin [1 ,2 ]
Kim, Chang-Lae [4 ]
Kim, Dae-Eun [1 ,2 ]
机构：
[1] Yonsei Univ, Ctr Nanowear, Seoul 03722, South Korea
[2] Yonsei Univ, Dept Mech Engn, Seoul 03722, South Korea
[3] PSG Coll Arts & Sci, PG & Res Dept Phys, Coimbatore 641014, Tamil Nadu, India
[4] Chosun Univ, Dept Mech Engn, Gwangju 61452, South Korea
来源：
CERAMICS INTERNATIONAL | 2019年 / 45卷 / 09期
基金：
新加坡国家研究基金会;
关键词：
Metal-matrix composites; Adhesion; Wear; Mechanical properties; Durable coatings; MECHANICAL-PROPERTIES; CARBON-FILMS; CONTACT PRESSURES; TI CONTENT; COATINGS; WEAR; SUBSTRATE; FRICTION; BEHAVIOR; MICROSTRUCTURE;
D O I：
10.1016/j.ceramint.2019.03.090
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Titanium-diamond-like carbon (Ti-DLC) composite coatings were deposited on 304 SUS substrates by periodic sputtering of Ti in between DLC deposition with different Ti target powers using a magnetron sputtering system. Microstructure as well as the mechanical and tribological properties of the Ti-DLC composite coatings were highly dependent on the Ti target power which was varied from 75 to 150 W. Transmission electron microscopy (TEM) confirmed that the Ti atoms in DLC coatings were in an amorphous state which was beneficial for deterring crack nucleation within the coating. Furthermore, premature delamination of a pure DLC coating with a thickness of similar to 330nm could be prevented by inclusion of Ti in DLC. All the Ti-DLC composite coatings were capable of drastically enhancing the friction and wear properties of bare 304 SUS. The coating deposited with a target power of 85 W showed the highest wear resistance with a wear rate of similar to 3.13 x 10(-11) mm(3)/N mm, which was extremely low for a dry sliding condition. This outcome was attributed to ultra-fine distribution of amorphous Ti in DLC which led to low internal stress and high I-D/I-G ratio of the coating.
引用
收藏
页码：11971 / 11981
页数：11
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