The Korean Journal of Ceramics

The Korean Ceramic Society (한국세라믹학회)
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Tribological Charactristics of Diamond-like Carbon Deposited on Ferrite

  • Nam-Soo Kim (Dept. of Materials Engineering, Korea Univ) ;
  • Dae Soon Lim (Dept. of Materials Engineering, Korea Univ) ;
  • Heng-Wook Kim (Institute of Industrial Technology, Korea Univ) ;
  • Sang-Ro Lee (Korea Institute of Machinery and Metals, Changwon)
  • Published : 1995.12.01
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Abstract

Tribological behavior of the diamond-like carbon (DLC) films sliding on floppy disk has been investigated. Hydrogenated DLC films have been prepared by plasma enhanced chemical vapor deposition (PECVD) using methane and hydrogen mixture in different volume ratios on ferrite substrates. DLC films show lower friction coefficients (0.2~0.4) than those of the uncoated ferrite(0.4~0.5). DLC films containing more hydrogen exhibit higher wear resistance. To investigate the roughness effect on wear, the substrates were polished with SiC papers prior to deposition. Too fine or too rough DLC surfaces result in poor wear resistance. Wear resistance of annealed DLC films at higher temperature slightly increases with respect to as-deposited film.

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References

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