Microstructure, corrosive-wear and electrochemical performance of laser cladded NiTi–xAl2O3 coatings in 3.5%NaCl solution

IF 1.5 4区工程技术 Q3 ENGINEERING, MECHANICAL

Industrial Lubrication and Tribology Pub Date : 2024-06-20 DOI:10.1108/ilt-02-2024-0044

Yang Chenglong, Kong Dejun

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引用次数: 0

Abstract

Purpose

The aim of this study is to investigate the effects of Al₂O₃ mass fraction on the corrosive-wear and electrochemical performance of NiTi coating in 3.5% NaCl solution.

Design/methodology/approach

The NiTi–xAl₂O₃ coatings were fabricated on S355 steel by laser cladding, and their corrosive-wear and electrochemical performance were investigated using a wear tester and electrochemical workstation, respectively.

Findings

The wear rates of NiTi–5%Al₂O₃, –10%Al₂O₃ and –15%Al₂O₃ coatings are 82.33, 54.23 and 30.10 µm³ mm⁻¹ N⁻¹, respectively, showing that the wear resistance of NiTi–15%Al₂O₃ coating is the best. The wear mechanism is abrasive wear, which is attributed to the increase of coating hardness by the Al₂O₃ addition. The polarization resistance of NiTi–5%Al₂O₃, –10%Al₂O₃ and –15%Al₂O₃ coatings is 3,639, 5,125 and 10,024 O cm², respectively, exhibiting that the NiTi–15% Al₂O₃ coating has the best corrosion resistance.

Originality/value

The roles of Al₂O₃ in the corrosive-wear and electrochemical performance of NiTi–xAl₂O₃ coating were revealed through the experimental investigation.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-02-2024-0044/

查看原文本刊更多论文

3.5%NaCl 溶液中激光熔覆 NiTi-xAl2O3 涂层的微观结构、腐蚀磨损和电化学性能

目的研究 Al2O3 质量分数对 3.5% NaCl 溶液中镍钛涂层腐蚀磨损和电化学性能的影响。设计/方法通过激光熔覆法在 S355 钢上制造了镍钛-xAl2O3 涂层，并使用磨损测试仪和电化学工作站分别研究了其腐蚀磨损和电化学性能。结果 NiTi-5%Al2O3、-10%Al2O3 和 -15%Al2O3 涂层的磨损率分别为 82.33、54.23 和 30.10 µm3 mm-1 N-1，表明 NiTi-15%Al2O3 涂层的耐磨性最好。磨损机理为磨料磨损，这是由于 Al2O3 的加入提高了涂层硬度。NiTi-5%Al2O3、-10%Al2O3 和 -15%Al2O3 涂层的极化电阻分别为 3,639 O cm2、5,125 O cm2 和 10,024 O cm2，表明 NiTi-15%Al2O3 涂层的耐腐蚀性最好。原创性/价值通过实验研究揭示了 Al2O3 在 NiTi-xAl2O3 涂层的腐蚀磨损和电化学性能中的作用。同行评议本文的同行评议记录可在以下网址查阅： https://publons.com/publon/10.1108/ILT-02-2024-0044/

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来源期刊

Industrial Lubrication and Tribology 工程技术-工程：机械

CiteScore

3.00

自引率

18.80%

发文量

129

审稿时长

1.9 months

期刊介绍： Industrial Lubrication and Tribology provides a broad coverage of the materials and techniques employed in tribology. It contains a firm technical news element which brings together and promotes best practice in the three disciplines of tribology, which comprise lubrication, wear and friction. ILT also follows the progress of research into advanced lubricants, bearings, seals, gears and related machinery parts, as well as materials selection. A double-blind peer review process involving the editor and other subject experts ensures the content''s validity and relevance.