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Exploiting carbon‐based (Cr,Ce)/a‐C:H nanocomposite film on cemented WC
Author(s) -
Zhou Shengguo,
Liu Zhengbing,
Wang Shuncai
Publication year - 2017
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.6260
Subject(s) - cemented carbide , materials science , tungsten carbide , microstructure , tribology , nanocomposite , carbon fibers , tungsten , composite material , amorphous carbon , amorphous solid , metallurgy , carbide , composite number , chemistry , organic chemistry
Cemented tungsten carbide (WC) has widely served in modern industry because of its outstanding characteristics, while it could suffer from severely wear both under ambient air and water environments. To exploit a novel carbon‐based film should be a feasible way to modify the surface of cemented WC and overcome these shortcomings. In the present study, the Cr/Ce co‐incorporated (Cr,Ce)/a‐C:H carbon‐based film was successfully deposited on cemented WC. The microstructure and mechanical properties of films were systematically characterized, and their tribological behaviors were tested in ambient air and deionized water environment. The results showed that (Cr,Ce)/a‐C:H film dominated by the typical amorphous structure and the doping Cr existed with the metallic Cr nanocrystallites as well as Ce formed CeO 2 . The (Cr,Ce)/a‐C:H film could possess good mechanical performances, which could own higher hardness, elastic module, low internal stress, and better adhesive strength. Especially, the as‐prepared (Cr,Ce)/a‐C:H film could present relatively lower friction coefficient and wear rate compared to uncoated cemented WC both under ambient air and deionized water environment, indicating that the Cr/Ce co‐doped (Cr,Ce)/a‐C:H film could be an effective method to modify the surface of cemented WC so as to improve the friction and wear performances of cemented WC materials.