Electric discharge coating process variation and its wear properties

IF 1 4区工程技术 Q4 ENGINEERING, MECHANICAL

International Journal of Surface Science and Engineering Pub Date : 2021-07-08 DOI:10.1504/ijsurfse.2021.116329

Ilangovan Arun, C. Yuvaraj, G. Reddy, Narayanaiyengar Balaji

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引用次数: 1

Abstract

The present study elaborates and compare about process variation of electrical discharge coating process through powder mixed and powder metallurgy (semi-sintered) electrode that influences mechanical and metallurgical properties of over duplex stainless. Occurrences of surface roughness, poke, splatters and carters are minimal in deposition of pyrolysis carbon while using the powder metallurgical electrode process of deposition than of powder mixed. Coating layer thickness and porosity are greater in powder mixed having a similar decarburising depth that deserves hardness values with an average of 1,001 HV to 1,010 HV across its section. Pyrolysis carbon restricts alloying element deposition that reduced frictional coefficient with greater wear rate compared with the powder metallurgical process. The metallurgical characterisation is performed through a scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), phase identification through X-ray powder diffraction (XRD), optical microscope (OM), mechanical testing through Vickers microhardness, and wear testing by pin-on-disc (POD) tribometer.

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放电涂层工艺变化及其磨损性能

本研究阐述并比较了粉末混合和粉末冶金（半烧结）电极放电涂层工艺的工艺变化对过双相不锈钢力学和冶金性能的影响。在热解碳沉积过程中，使用粉末冶金电极沉积过程而不是混合粉末沉积过程，表面粗糙度、毛刺、飞溅和卡特现象的发生率最低。涂层厚度和孔隙率在具有相似脱碳深度的粉末混合物中更大，该粉末混合物在其截面上具有平均1001 HV至1010 HV的硬度值。热解碳限制了合金元素的沉积，与粉末冶金工艺相比，热解碳降低了摩擦系数，磨损率更高。通过扫描电子显微镜（SEM）、能量色散X射线光谱（EDS）、X射线粉末衍射（XRD）、光学显微镜（OM）进行相鉴定、通过维氏显微硬度进行机械测试以及通过销-盘（POD）摩擦计进行磨损测试来进行冶金表征。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Surface Science and Engineering 工程技术-材料科学：膜

CiteScore

1.60

自引率

25.00%

发文量

审稿时长

>12 weeks

期刊介绍： IJSurfSE publishes refereed quality papers in the broad field of surface science and engineering including tribology, but with a special emphasis on the research and development in friction, wear, coatings and surface modification processes such as surface treatment, cladding, machining, polishing and grinding, across multiple scales from nanoscopic to macroscopic dimensions. High-integrity and high-performance surfaces of components have become a central research area in the professional community whose aim is to develop highly reliable ultra-precision devices.