Study on Wear and Scour Performance of Ni6035WC/Wc-10Cr-4Cr Coating by HVAF

IF 2.9 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS
Coatings Pub Date : 2024-09-06 DOI:10.3390/coatings14091148
Xinghua Liang, Tong Zhuang, Lingxiao Lan, Jian Huang, Siying Li, Yunsheng Lei, Bohan Xu, Yujiang Wang, Xueli Shi, Qicheng Hu
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Abstract

The Ni6035WC/WC-10Co-4Cr wear- and scour-resistant composite coating was fabricated using supersonic flame spraying technology. To further enhance the wear and scour resistance of the HVAF-sprayed Ni6035WC/WC-10Co-4Cr composite coatings, a post-treatment was conducted via vacuum remelting. This involved placing the coatings in a vacuum sintering process at 1120 °C for 10 min. Scanning electron microscopy (SEM), X-ray diffraction (XRD), and hardness testing were employed to characterize the structure and morphology of the Ni6035WC/WC-10Co-4Cr coating, as well as to assess its wear and scour resistance. The results indicate that vacuum sintering significantly enhances the wear and scour resistance of the coating, while also improving its hardness, density, and bonding strength. The hardness of each coating after vacuum sintering, 1019 HV, 920 HV, and 897 HV, was improved by 6% compared to 966 HV, 906 HV, and 845 HV before sintering. The average wear rate of each coating after sintering was 13% lower than before vacuum sintering. Furthermore, the impact of varying WC-10Co-4Cr content on the coating’s properties was examined under identical test conditions. It was found that the optimal overall performance was achieved with a WC-10Co-4Cr content of 20%, resulting in an average wear rate that was 19% lower than that of other coatings.
通过 HVAF 研究 Ni6035WC/Wc-10Cr-4Cr 涂层的磨损和冲刷性能
Ni6035WC/WC-10Co-4Cr 抗磨损和抗冲刷复合涂层是采用超音速火焰喷涂技术制造的。为了进一步提高 HVAF 喷涂的 Ni6035WC/WC-10Co-4Cr 复合涂层的耐磨性和抗冲刷性,还通过真空重熔进行了后处理。这包括将涂层置于 1120 °C 的真空烧结过程中 10 分钟。采用扫描电子显微镜 (SEM)、X 射线衍射 (XRD) 和硬度测试来表征 Ni6035WC/WC-10Co-4Cr 涂层的结构和形态,并评估其耐磨性和耐刮擦性。结果表明,真空烧结显著增强了涂层的耐磨性和耐刮擦性,同时还提高了其硬度、密度和结合强度。与烧结前的 966 HV、906 HV 和 845 HV 相比,真空烧结后各涂层的硬度分别为 1019 HV、920 HV 和 897 HV,提高了 6%。烧结后每种涂层的平均磨损率比真空烧结前低 13%。此外,在相同的测试条件下,还考察了不同 WC-10Co-4Cr 含量对涂层性能的影响。结果发现,WC-10Co-4Cr 含量为 20% 时,整体性能最佳,平均磨损率比其他涂层低 19%。
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
Coatings
Coatings Materials Science-Surfaces, Coatings and Films
CiteScore
5.00
自引率
11.80%
发文量
1657
审稿时长
1.4 months
期刊介绍: Coatings is an international, peer-reviewed open access journal of coatings and surface engineering. It publishes reviews, research articles, communications and technical notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. Full experimental and/or methodical details must be provided. There are, in addition, unique features of this journal: * manuscripts regarding research proposals and research ideas will be particularly welcomed * electronic files or software regarding the full details of the calculation and experimental procedure - if unable to be published in a normal way - can be deposited as supplementary material
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