WC颗粒增强Fe基合金涂层的显微组织与耐磨性能

doi:10.13251/j.issn.0254-6051.2023.10.042

金属热处理 ›› 2023, Vol. 48 ›› Issue (10): 274-278.DOI: 10.13251/j.issn.0254-6051.2023.10.042

WC颗粒增强Fe基合金涂层的显微组织与耐磨性能

高万东

安徽省特种设备检测院, 安徽合肥 231100

收稿日期:2023-06-15 修回日期:2023-09-09 出版日期:2023-10-25 发布日期:2023-12-07
作者简介:高万东(1984—),男,高级工程师,硕士,主要研究方向为压力容器及安全附件的检验、检测工作,E-mail: 363868465@qq.com
基金资助:
安徽省质量技术监督科技计划项目(2018AHQT25)

Microstructure and wear resistance of WC particle reinforced Fe based alloy coating

Gao Wandong

Anhui Special Equipment Inspection Institute, Hefei Anhui 231100, China

Received:2023-06-15 Revised:2023-09-09 Online:2023-10-25 Published:2023-12-07

摘要/Abstract

摘要： 利用等离子体喷焊(PMI)在45钢表面制备了WC颗粒增强Fe基合金复合涂层。在PMI过程中,应用了不同的电压参数,并采用扫描电镜(SEM)、X射线衍射仪(XRD)和能谱仪(EDS)分别对涂层组织结构及成分进行了分析;并采用自制摩擦磨损测试仪进行了磨损特性分析。SEM分析结果表明,涂层与基体材料冶金结合无裂纹,WC颗粒在涂层中均匀分布。此外,涂层的主要相包括WC、W₂C、Cr₂₃C₆、Fe₃W₃C、Cr₃C₂和Cr₇C₃,涂层的最大硬度约为1600 HV。摩擦磨损特性分析结果表明,含WC颗粒的等离子涂层与Fe基合金涂层相比,磨损量减少了50%以上,磨损的主要机理是磨料磨损,大量的WC颗粒阻碍了微切割,具有较高的耐磨性。

关键词: 等离子喷焊, 金属基复合材料, 微结构, 耐磨性, WC颗粒

Abstract: Plasma melt injection(PMI) was used to prepare WC particles reinforced metal matrix composites layer on the 45 steel. During the PMI process, different voltage parameters were applied. The clad coating were analyzed by optical microscope (OM), scanning electron microscopy (SEM),X-ray diffraction(XRD) and energy dispersive spectrometer(EDS) to study microstructure, phase composition and chemical compositions of the clad coating. And a self-made friction and wear tester was used for wear characteristics analysis. SEM analysis result reveals that the clad coating, being metallurgical bonding with base material, is crack-free, and the WC particles distribute uniformly in the clad coating. In addition, the primary phase of the clad coating contains WC, W₂C, Cr₂₃C₆, Fe₃W₃C, Cr₃C₂ and Cr₇C₃. The maximum hardness of the clad coating is about 1600 HV. The friction and wear test results show that the wear loss of the plasma clad coating with WC reduces by more than 50% compared with that of the Fe based alloy coating. The main mechanism of wear is abrasive wear, with a large number of WC particles hindering micro cutting and exhibiting high wear resistance.

Key words: plasma melt injection, metal matrix composites, microstructure, wear resistance, WC particles

中图分类号:

TG455

高万东. WC颗粒增强Fe基合金涂层的显微组织与耐磨性能[J]. 金属热处理, 2023, 48(10): 274-278.

Gao Wandong. Microstructure and wear resistance of WC particle reinforced Fe based alloy coating[J]. Heat Treatment of Metals, 2023, 48(10): 274-278.

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WC颗粒增强Fe基合金涂层的显微组织与耐磨性能

Microstructure and wear resistance of WC particle reinforced Fe based alloy coating

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