Microstructure and Interface Morphology as well as Wear Behavior of Induction Remelting Ni60/WC Composite Coating

Zhang Hongxia; Zhao Hongli; Xia Jianyuan; Yang Shanshan

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Microstructure and Interface Morphology as well as Wear Behavior of Induction Remelting Ni60/WC Composite Coating
Vol. 31, Issue 2, Pages: 107-109(2011)
Published： 2011 ，
DOI：

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[1]张红霞,赵红利,夏建元,杨珊珊.感应重熔Ni60/WC涂层的界面组织与耐磨性研究[J].特种铸造及有色合金,2011,31(02):107-109+199-200.

Zhang Hongxia, Zhao Hongli, Xia Jianyuan, et al. Microstructure and Interface Morphology as well as Wear Behavior of Induction Remelting Ni60/WC Composite Coating. [J]. Special Casting & Nonferrous Alloys 31(2):107-109(2011)
[1]张红霞,赵红利,夏建元,杨珊珊.感应重熔Ni60/WC涂层的界面组织与耐磨性研究[J].特种铸造及有色合金,2011,31(02):107-109+199-200. DOI：

Zhang Hongxia, Zhao Hongli, Xia Jianyuan, et al. Microstructure and Interface Morphology as well as Wear Behavior of Induction Remelting Ni60/WC Composite Coating. [J]. Special Casting & Nonferrous Alloys 31(2):107-109(2011) DOI：

摘要

用冷涂工艺在45钢表面制备了Ni基WC覆层

并采用高频感应加热的方法获得重熔涂层。用金相显微镜、扫描电镜和X射线能谱仪分析涂层的成分、显微组织和界面特征

分析了不同重熔温度对涂层组织和硬度分布的影响。进行了磨损试验

比较Ni基WC涂层与Ni60、T10钢的磨损性能。结果表明

冷涂结合高频感应重熔可以获得WC颗粒弥散分布的致密的Ni基涂层

涂层与钢基体间由于原子扩散形成一条冶金结合的白亮带;涂层的磨损机理是磨粒磨损和微犁削

Ni基WC涂层的磨损性能优于Ni60涂层

远高于淬火T10钢。

Abstract

Ni-based WC coating was fabricated on the surface of 45 type steel by cold spraying method

and remelting coating was obtained by high frequency induction heating technology.Composition

microstructure and interface morphology of the casting were observed by OM（optical microscope）

SEM（scanning electron microscope）and XRD（X-ray diffraction）to understand effects of remelting temperatures on microstructure and hardness distribution of the coating.In addition

through wear testing

the wear behavior of Ni-based WC coating was analyzed comparatively with that of Ni60 and T10 steel.It is found that compact Ni-based coating with dispersedly distributed WC particle can be obtained by cold spraying integrated with high frequency induction heating.A white metallurgical bonding zone between coating and the steel matrix can be observed as a result of atom diffusion.Wear mechanism of the coating is characterized by abrasive wear and microplowing.Wear behavior of the Ni-based coating is superior to that of Ni60 coating and it is higher far away than that of T10 steel.