Influence of TiC/a-C phase on tribological properties of composite coatings

被引：0
|
作者：
Kumar, N. [1 ]
Dash, S. [1 ]
Kamruddin, M. [1 ]
Das, C. R. [2 ]
Chandramohan, P. [3 ]
Srinivasan, M. P. [3 ]
Tyagi, A. K. [1 ]
Raj, B. [4 ]
机构：
[1] IGCAR, Surface & Nanosci Div, Kalpakkam 603102, Tamil Nadu, India
[2] IGCAR, Mat Technol Div, Kalpakkam 603102, Tamil Nadu, India
[3] BARCF, Water & Steam Chem Div, Kalpakkam 603102, Tamil Nadu, India
[4] IGCAR, Kalpakkam 603102, Tamil Nadu, India
来源：
TRIBOLOGY-MATERIALS SURFACES & INTERFACES | 2011年 / 5卷 / 04期
关键词：
TiC/a-C; Composite coatings; Friction; Wear;
D O I：
10.1179/1751584X11Y.0000000019
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Gas phase carburisation of titanium in CH4 atmosphere was carried out in a thermogravimetric analyser. The analysis revealed the formation of TiC phase embedded in an amorphous carbon (a-C) matrix. Raman scattering investigation revealed the evolution of two separate peaks corresponding to D and G band vibrational modes in a hexagonal sp(2) phase of the graphite-like structure. The tribological properties of this coating relied significantly on the relative extent of D and G band modes with the evolution of TiC phase. A sharp transition of friction from lower to higher value was observed due to the wearing out of tribolubricant phases of TiC with disordered graphite-like structure present in the a-C matrix. In case of thicker coating, a lower regime of friction was observed with longer wear distances.
引用
收藏
页码：172 / 176
页数：5
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