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论文类型：期刊论文

发表时间：2009-04-02

发表刊物：THIN SOLID FILMS

收录刊物：SCIE、EI

卷号：517

期号：11

页面范围：3304-3309

ISSN号：0040-6090

关键字：Cr-Ni-N; Magnetron sputtering; Nano-hardness; Tribological coatings; Wear; X-ray diffraction; Scanning electron microscopy

摘要：Cr-Ni-N coatings were deposited on 304 stainless steel substrates using a conventional direct current magnetron reactive sputtering system in nitrogen-argon reactive gas mixtures. The influence of Ni content (0 <= x <= 20 at.%) on the coating composition, microstructure, and tribological properties was investigated by glow discharge optical spectroscopy, X-ray diffraction and transmission electron microscopy, scanning electron microscopy (SEM), nano-indentation, and pin-on-disk tests. The results showed that microstructure and properties of coatings changed due to the introduction of Ni. The ternary Cr-Ni-N coatings exhibited solid solution Structures in spite of the different compositions. The addition of Ni strongly favoured preferred orientation growth of < 200 >. This preferred orientation resulted from the formed nano-columns being composed of grains with the same crystallographic orientation, as confirmed by SEM cross-sectional observations. The mechanical properties including the nano-hardness and reduced Young's modulus decreased with increasing Ni content. Pin-on-disk tests showed that low Ni content coatings presented higher abrasion resistance than high Ni content coatings. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.