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논문 기본 정보

자료유형
학술대회자료
저자정보
저널정보
한국자동차공학회 한국자동차공학회 춘 추계 학술대회 논문집 한국자동차공학회 1997년 춘계학술대회논문집 2호
발행연도
1997.6
수록면
617 - 622 (6page)

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초록· 키워드

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CrN hard coating becomes one of the attractive protective films for enhancement of wear and corrosion resistance due to its superior properties. In addition, the noted property of CrN coating is the excellent corrosion resistance. Therefore CrN coating has a strong potential to replace the electro-deposited hard chrome coating which generates serious environmental pollution problem at present in the world. In this study, CrN film was deposited on S45C by cathodic arc ion plating process. The deposition of CrN laver was carried out at the various N₂ partial pressure of 5×10^-3 torr to 2×10^-2 torr under the bias voltage of -200V. All the coated specimens were analyzed by XRD and SEM for structural characterization and the wear and corrosion behaviors were compared with those of hard Cr coated specimens y ball-on-disc wear test and electrochemical polarization measurement.
The CrN coating deposited at 1×10^-2 torr showed the highest CrN(220) intensity and a maximum hardness of Hk 2700 which is twice of that of the hard Cr coating. The wear resistance of CrN coated S45C against Al₂O₃ and AISI 52100 steel balls was highly improved compared to that of the hard Cr coating. The CrN coatings also enhanced the resistance of pitting and crevice corrosion. This improvement was associated with the formation of the CrN coatings with dense and fine granular structures without microcrack which exists in all the electroplated hard Cr coating.

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ABSTRACT

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3.결과 및 고찰

4.결론

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