Tuning the tribological property of PLD deposited DLC-Au nanocomposite thin films

被引：29
作者：
Panda, M. [1 ]
Krishnan, R. [1 ]
Krishna, N. G. [2 ]
Amirthapandian, S. [1 ]
Magudapathy, P. [1 ]
Kamruddin, M. [1 ]
机构：
[1] Indira Gandhi Ctr Atom Res, HBNI, Mat Sci Grp, Kalpakkam 603102, Tamil Nadu, India
[2] Indira Gandhi Ctr Atom Res, HBNI, Corros Sci & Technol Grp, Kalpakkam 603102, Tamil Nadu, India
来源：
CERAMICS INTERNATIONAL | 2019年 / 45卷 / 07期
关键词：
PLD; Au nanocluster; DLC-Au; Nanocomposite; Tribology; DIAMOND-LIKE CARBON; YTTRIA-STABILIZED ZIRCONIA; GOLD NANOCLUSTERS; LASER DEPOSITION; COATINGS; SURFACE;
D O I：
10.1016/j.ceramint.2019.01.213
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：
Nonhydrogenated Diamond-like Carbon-gold (DLC-Au) nanocomposite thin films with various Au contents and cluster size (< 10 nm) have been engineered using Excimer Pulsed Laser Deposition (PLD) on silicon (100) substrates with an aim to achieve reduced coefficient of friction (CoF). Structure, microstructure, chemical bonding and chemical composition of these films were comprehensively investigated using X-ray diffraction (XRD), High resolution transmission electron microscopy (HRTEM), Raman and X-ray photoelectron spectroscopy (XPS), respectively. It is observed that the DLC matrix with lowest Au content sustained higher sp(3) content due to enhanced interaction of carbon and smaller Au nano-cluster formed in these films. DLC-Au Nanocomposite formation takes place due to the low compatibility between carbon and gold which resulted in ultra-smaller Au crystallites in DLC matrix at lowest Au content. This enhanced the sp(3) content in DLC films and induces tribofilm nucleation on the ball counter body with large amount of sp( )(2)phase fraction which significantly reduced the CoF.
引用
收藏
页码：8847 / 8855
页数：9
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