Observation and characterisation of the surface hardness enhancement of the laser remelted NiCrBSi coating

IF 1 4区工程技术 Q4 ENGINEERING, MECHANICAL

International Journal of Surface Science and Engineering Pub Date : 2018-11-14 DOI:10.1504/IJSURFSE.2018.10017347

Jiangwei Liu, Song Chen, Yan Wang, Hu Li

引用次数: 0

Abstract

The hardness enhancement on the surface of the laser remelted NiCrBSi coating was observed and characterised by employing X-ray photoelectron microscopy and nanoindentation techniques. The result indicates that, under the line energy density of 80 J/mm, there is an agglomeration of the borides on the top 20 μm of the remelted coating that significantly enhanced the surface hardness as high as 1.5-fold stronger to 13 GPa than that of the main body of 8.5 GPa. Owing to the high concentration of the borides, the elemental distribution of the remelted surface has been modified significantly. In addition by varying the laser energy, the depth of the surface enhanced regions can be modified.

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激光重熔NiCrBSi涂层表面硬度增强的观察与表征

利用X射线光电子显微镜和纳米压痕技术观察并表征了激光重熔NiCrBSi涂层表面的硬度增强。结果表明，在80J/mm的线能量密度下，硼化物在重熔涂层的顶部20μm处聚集，使表面硬度显著提高，比8.5GPa的主体硬度高1.5倍，达到13GPa。由于硼化物的高浓度，重熔表面的元素分布发生了显著的变化。此外，通过改变激光能量，可以改变表面增强区域的深度。

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.