Effect of carbon on microstructure of CrAlCxN1-x coatings by hybrid coating system |
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| Authors: | Sung-Kyu AHN Se-Hun KWON Kwang-Ho KIM |
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| Affiliation: | 1. National Core Research Center for Hybrid Materials Solution, Pusan National University, Busan 609-735, Korea;2. School of Materials Science and Engineering, Pusan National University, Busan 609-735, Korea |
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| Abstract: | A systematic investigation of the microstructure of CrAlCxN1-x coatings as a function of carbon contents was conducted. Quaternary CrAlCxN1-x coatings were deposited on Si wafers by a hybrid coating system combining an arc-ion plating technique and a DC reactive magnetron sputtering technique using Cr and Al targets in the Ar/N2/CH4 gaseous mixture. The effect of carbon content on microstructure of CrAlCxN1-x coatings was investigated with instrumental analyses of X-ray diffraction, X-ray photoelectron, and high-resolution transmission electron microscopy. The results show that the carbon content of CrAlCxN1-x coatings linearly increases with increasing CH4/(CH4/N2) gas flow rate ratio. The surface roughness of the CrAlCxN1-x coating layer decreases with the increase of carbon content. |
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