ISSN   1004-0595

CN  62-1095/O4

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FNiWC15喷熔层的显微组织和耐磨性研究[J]. 摩擦学学报, 1995, 15(2): 165-170.
引用本文: FNiWC15喷熔层的显微组织和耐磨性研究[J]. 摩擦学学报, 1995, 15(2): 165-170.
A Study on Microstructure and Wear-Resistance of FNiWC15 Spray-Welding Coating[J]. TRIBOLOGY, 1995, 15(2): 165-170.
Citation: A Study on Microstructure and Wear-Resistance of FNiWC15 Spray-Welding Coating[J]. TRIBOLOGY, 1995, 15(2): 165-170.

FNiWC15喷熔层的显微组织和耐磨性研究

A Study on Microstructure and Wear-Resistance of FNiWC15 Spray-Welding Coating

  • 摘要: 表面改性是摩擦学研究中的一个重要领域,而喷熔法则是表面工程中得到广泛应用的表面改性技术,为了揭示喷熔层具有优异耐磨性能的原因,通过扫描电子显微镜观察和X射线能谱分析,以及无润滑滑动摩擦试验,研究了含15%(wt)WC耐磨相的FNiWC15镍基自熔合金粉末喷熔层的显微组织,显微硬度,合金元素分布及其耐磨性,结果表明,FNiWC15喷熔层的组织结构是在树枝状镍基固溶体基体上,弥散分布着微细的WC颗粒,

     

    Abstract: Surface modification is one of important research fields of tribology,and spray-welding is a widely used surface modification technique in surface engineering.In order to revealthe reasons of excellent wear-resistance of the Ni-base FNiWC15 spray-welding coating , this paperinvestigated its microstructure,microhardness, distribution of alloy elements and wear- resistancethrough SEM observation,X-ray energy dispersive spectroscopy analysis and sliding wear test in drycondition . The results showed that its microstructure consists of dendrite matrix of Ni-base solidsolution+dispersive fine WC particles+polygonal compound particles with high Si and low Cr,W,Ni contents +compound particles with high Cr and low Si contents. The wear-resistance ofFNiWC15 spray-welding coating was 26 times that of 52100 steel.This research is of an importantmcaning for promoting the development of surface modification techniques and enlarging theapplication of spray- welding technique in industries.

     

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