Enhanced surface properties of M2 steel by plasma nitriding pre-treatment and magnetron sputtered TiN coating

IF 1 4区工程技术 Q4 ENGINEERING, MECHANICAL

International Journal of Surface Science and Engineering Pub Date : 2020-12-23 DOI:10.1504/ijsurfse.2020.10034487

M. S. Libório, E. Almeida, S. Alves, T. Costa, M. Feitor, R. M. Nascimento, R. Sousa, M. Naeem, Mohsan Jelani

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引用次数: 8

Abstract

AISI M2 high-speed steels are widely used in cutting/forming tools due to their easy machinability and balanced toughness. Unfortunately, they exhibit severe cutting edge wear, which reduces their useful lifetime. The lifetime of such steels can be improved by titanium nitride hard coating. However, in sliding wear applications having a metal-to-metal contact, such coatings exhibit low adhesion to the substrate due to substantial hardness differences among coating and substrate. Here, plasma nitriding is performed before the deposition of magnetron sputtered-TiN coating using various nitriding parameters to find whether the surface properties of the duplex treated sample can be altered by changing these parameters or not. It is found that the surface hardness and hardening depth can be improved by using the duplex treatment as compared to only TiN coating. A significant decrease in wear rate is attained using the duplex treatment and substantial improvement by altering the plasma nitriding parameters.

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等离子渗氮预处理和磁控溅射镀TiN增强M2钢表面性能

AISI M2高速钢因其易于切削加工和韧性平衡而广泛应用于切削/成形工具中。不幸的是，它们表现出严重的切削刃磨损，这减少了它们的使用寿命。氮化钛硬质涂层可提高此类钢的使用寿命。然而，在具有金属对金属接触的滑动磨损应用中，由于涂层和基体之间存在巨大的硬度差异，这种涂层对基体的附着力较低。在磁控溅射tin涂层沉积之前，使用不同的渗氮参数进行等离子体渗氮，以确定是否可以通过改变这些参数来改变双相处理样品的表面性能。结果表明，与单纯镀TiN相比，采用双相处理可提高表面硬度和硬化深度。采用双相处理可显著降低磨损率，通过改变等离子体渗氮参数可显著改善磨损率。

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.