Degradation Features of Ion-Plasma Nitride Coatings under Sliding Friction

IF 2 4区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Physical Mesomechanics Pub Date : 2025-10-17 DOI:10.1134/S1029959924601209

O. V. Kudryakov, V. I. Kolesnikov, I. V. Kolesnikov, D. S. Manturov

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Abstract

The paper studies nitride coatings of the TiAlN and CrAlSiN systems with a thickness of 0.8…4.0 μm deposited by the vacuum ion-plasma technology. Specimens of nitrided 38Cr2MoAl and cemented 12Cr2Ni4 steels were used as substrates for coating deposition. Experimental data are derived on the physical and mechanical properties of the coatings by various indentation methods, including scratch tests, as well as on their tribological properties in sliding friction tests. The results of microstructural (SEM) and energy-dispersive X-ray (EDX) analysis of the coatings are also presented, including electron microscopic data on coating wear in tribological tests. It is shown that none of the physical and mechanical characteristics (hardness H, elastic modulus E, and their ratios H/E, H³/E²) determined by continuous or dynamic (for example, critical load F^c_N for coating spallation in scratch tests) indentation can separately describe the coating resistance to wear under the test conditions. This is the methodological problem that does not allow an accurate prediction of the coating wear. The problem is solved by the joint use of the calculated specific work of coating spallation from the substrate G and the coating resistance to plastic deformation H³/E², which together determine not only the coating degradation process, but also the loss of stability of the entire coating–substrate system.

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离子等离子体氮化涂层在滑动摩擦下的降解特性

采用真空离子等离子体沉积技术，对厚度为0.8 ~ 4.0 μm的TiAlN和CrAlSiN体系进行了氮化涂层的研究。采用氮化38Cr2MoAl钢和硬质合金12Cr2Ni4钢作为基体进行涂层沉积。通过各种压痕方法（包括划痕试验）得出涂层的物理和机械性能的实验数据，以及滑动摩擦试验中涂层的摩擦学性能。给出了涂层的微观结构（SEM）和能量色散x射线（EDX）分析结果，包括摩擦磨损试验中涂层磨损的电镜数据。结果表明，通过连续或动态压痕（如划痕试验中涂层剥落的临界载荷FcN）确定的物理力学特性（硬度H、弹性模量E及其比值H/E、H3/E2）均不能单独描述试验条件下涂层的耐磨性。这是一个方法论问题，不能准确预测涂层磨损。通过计算涂层从基体脱落的比功G和涂层抗塑性变形的能力H3/E2共同决定了涂层的降解过程，也决定了整个涂层-基体体系的稳定性损失，从而解决了这一问题。

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来源期刊

Physical Mesomechanics Materials Science-General Materials Science

CiteScore

3.50

自引率

18.80%

发文量

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related in the physical mesomechanics and also solid-state physics, mechanics, materials science, geodynamics, non-destructive testing and in a large number of other fields where the physical mesomechanics may be used extensively. Papers dealing with the processing, characterization, structure and physical properties and computational aspects of the mesomechanics of heterogeneous media, fracture mesomechanics, physical mesomechanics of materials, mesomechanics applications for geodynamics and tectonics, mesomechanics of smart materials and materials for electronics, non-destructive testing are viewed as suitable for publication.