S0401-1-1 DLC成膜したステンレス鋼の耐摩耗性及び耐腐食性評価([S0401-1]表面改質および薄膜コーティング(1))

概要

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DLC (Diamond-like carbon) film shows low friction coefficient against various materials and has high wear-resistance. However, usual DLC film has micro-pores or pinholes, and those defects become problems that DLC film is not able to make the best use of abrasion resistance effectively due to the corrosion of the substrate. In this study, we aim to deposit DLC films satisfied with both antiwear and anticorrosion characteristics. This time, we focused on the interlayer. We use Si modified DLC (Si-DLC) interlayer deposited by using Si(CH_3)_4 gas and Cr interlayer. As a fundamental test, the adhesion strength between DLC film and a steel substrate was investigated by a scratch test. Then, with measuring the pitting potential as well as the tribological properties, the effects of the DLC coating had been confirmed. A ball-on-disk (BoD) test and an electrochemical measurement lead us to conclusion that an optimal structure to improve both tribological property and anticorrosion property was substrate/Cr/Si-C:H/DLC.
2010-09-04