Investigation of microstructures and properties of HVOF sprayed WC-10Co-4Cr coatings on high-hardness M42 steel

Xiaogang Lu; Zhenghua Lin; Peng Pan; Yunbo Chen; Lingli Zuo; Chunming Li

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자료유형: 학술저널

저자정보: Xiaogang Lu (Beijing National Innovation Institute of Lightweight Ltd) Zhenghua Lin (Hengda New Materials Co., Ltd) Peng Pan (Beijing National Innovation Institute of Lightweight Ltd) Yunbo Chen (Beijing National Innovation Institute of Lightweight Ltd) Lingli Zuo (Beijing National Innovation Institute of Lightweight Ltd) Chunming Li (Beijing National Innovation Institute of Lightweight Ltd)

저널정보: 한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제22권 제6호

발행연도: 2021.12

수록면: 649 - 654 (6page)

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연구주제

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연구배경

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연구방법

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연구결과

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WC-10Co-4Cr have been well known material with attractive corrosion resistance and excellent hardness in the WC-basedcoatings. To widen the application of the WC-10Co-4Cr coatings deposited on high-hardness metal cutting tools, theinvestigation of its preparation parameters and properties are required. In this study, dense micro-structured WC-10Co-4Crcoatings deposited on high-hardness M42 steel were performed with high velocity oxy-fuel (HVOF) spray process. Theprepared coatings exhibit excellent properties by improving the size of spray gun and injecting high flow nitrogen into theflame stream. A maximum micro-hardness of 1353.3 HV0.3 was achieved. In addition, the frictional properties of uncoated M42steel and the WC-10Co-4Cr coating were comparably studied under dry sliding wear tests. A low friction coefficient of 0.34-0.37 was achieved for WC-10Co-4Cr coating, showing a 57% decrease than that of uncoated M42 steel. X-ray diffractometrywas used to identify the phase composition, and scanning electron microscopy was adopted to characterize the microstructureof deposited coatings and worn-out surfaces.

#M42 steel #WC-10Co-4Cr coatings #Microstructure #Micro-hardness #Frictional properties

참고문헌 (50)

참고문헌 신청

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