Calculation and Analytical Prediction of Coating Wear during Tribological Tests Based on Models of Contact Fatigue Failure

IF 0.5 4区 工程技术 Q4 ENGINEERING, MECHANICAL Journal of Friction and Wear Pub Date : 2024-11-08 DOI:10.3103/S1068366624700272
O. V. Kudryakov, V. I. Kolesnikov, I. N. Kavaliova, I. V. Kolesnikov, D. S. Manturov
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Abstract

The work examines the conditions of tribological tests of steel samples with nitride ion-plasma coatings. A calculation and analytical model is proposed for quantitative assessment of contact and wear parameters during sliding friction tests: the size of the contact area, the depth of contact approach, the depth of the plastic zone, stresses in the coating, fatigue limit, and the critical thickness of the coating, which excludes its deflection. It has been shown that coatings with a thickness above critical realize their potential for physical, mechanical, and tribological properties regardless of the substrate. If the coating thickness is insufficient, the result of tribological tests is determined by the behavior of the “coating–substrate” system, a high-hard nitride coating on a ductile steel substrate experiences deflection and premature brittle failure. To assess the wear of coatings in this case, it is recommended to use fatigue failure models with construction of the Wöhler fatigue curve and determination of the fatigue limit based on the Murakami–Endo theory. The implementation of the recommended approach was carried out for the studied nitride coatings using a database of our own experimental data.

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基于接触疲劳破坏模型的摩擦学试验中涂层磨损的计算和分析预测
该研究对带有氮化物离子等离子涂层的钢制样品进行摩擦学试验。提出了一个计算和分析模型,用于定量评估滑动摩擦试验中的接触和磨损参数:接触面积大小、接触深度、塑性区深度、涂层中的应力、疲劳极限以及涂层的临界厚度(不包括挠度)。研究表明,涂层厚度超过临界厚度时,无论基材如何,都能发挥其在物理、机械和摩擦学特性方面的潜力。如果涂层厚度不足,摩擦学测试的结果将由 "涂层-基体 "系统的行为决定,在韧性钢基体上的高硬度氮化物涂层会出现变形和过早的脆性破坏。为了评估这种情况下涂层的磨损,建议使用疲劳失效模型,构建沃勒疲劳曲线,并根据村上-恩多理论确定疲劳极限。我们利用自己的实验数据数据库,对所研究的氮化物涂层实施了推荐的方法。
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来源期刊
Journal of Friction and Wear
Journal of Friction and Wear ENGINEERING, MECHANICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
1.50
自引率
28.60%
发文量
21
审稿时长
6-12 weeks
期刊介绍: Journal of Friction and Wear is intended to bring together researchers and practitioners working in tribology. It provides novel information on science, practice, and technology of lubrication, wear prevention, and friction control. Papers cover tribological problems of physics, chemistry, materials science, and mechanical engineering, discussing issues from a fundamental or technological point of view.
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