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학술저널
저자정보
저널정보
한국트라이볼로지학회 KTS International Journal KSTLE International Journal Vol.6 No.2
발행연도
2005.12
수록면
45 - 50 (6page)

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Plasma ceramic spray that is applied on a machine part under severe work conditions has been investigated for tribological behavior. The application of ceramic coatings by plasma spray has become essential in tribosystems to produce wear resistance and long life in severe conditions. The purpose of this study was to investigate the wear characteristics of 8% Y₂O₃-ZrO₂ coating, in view of the effect of post-spay heat treatment. The plasma-sprayed 8% Y₂O₃-ZrO₂ coating was studied to know the relationship between phase transformations and wear behavior related to post-spray heat treatment. Wear test was carried out with ball on disk type on normal loads of 50N, 70N and 90N under room temperature. The phase transformation of phase and the value of residual stress were measured by X-ray diffraction method(XRD). Tribological characteristics and wear mechanisms of coatings were observed by SEM. The tribological wear performance was discussed in the focusing of residual stress. Consequently, post-spray heat treatment plays an important role in decreasing residual stress. Residual stress in the coating system has a significant influence on the wear mechanism of coating.

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Abstract
1. Introduction
2. Experimental Procedure
3. The Results
4. Discussion
5. Conclusions
Acknowledgment
References

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