Effects of Different Counterpart Materials on the Tribological Behaviors of Ta-C Film

oleh: PAN Fa-qing, ZHANG Hao-yang, DING Ji-cheng, ZHAO Zhi-yong, ZHANG Bao-rong, YANG Ying, PENG Xin, ZHENG Jun

Format: Article
Diterbitkan: Editorial Department of Materials Protection 2023-02-01

Deskripsi

For studying the changing rules of the tribological properties and the related mechanisms of ta-C film in friction against several typical counterpart materials,a ta-C film with a thickness of approximately 1 μm was deposited by the laser-induced arc magnetic filtered vacuum cathode arc technology,and three kinds of counterpart balls with high hardness (WC,Al<sub>2</sub>O<sub>3</sub>&#x00A0;and 9Cr18) were used for friction and wear test.The microstructure and tribological properties of the ta-C film were systematically investigated by scanning electron microscopy,X-ray photoelectron spectroscopy,Raman spectrometer,surface profilometer,nano-indentation tester and ball-disk friction and wear equipment.Results showed that the ta-C film possessed extremely low friction coefficients in friction against all the three counterpart materials,and exhibited excellent antiwear and antifriction properties.When Al<sub>2</sub>O<sub>3</sub> counterpart was employed,the friction coefficient of the film was the lowest with a value of around 0.11;when 9Cr18 counterpart was employed,the film showed the lowest wear rate of 4.0&#x00D7;10<sup>-7</sup>&#x00A0;mm<sup>3</sup>/(N&#x00B7;m);and when WC counterpart was employed,the film showed the highest wear rate of 7.6&#x00D7;10<sup>-7</sup>&#x00A0;mm<sup>3</sup>/(N&#x00B7;m). Besides,the main wear mechanism of the film was abrasive wear,and a graphitized transfer film with the characteristics of carbon structure was detected on the surfaces of all the counterparts.