Increasing the Wear Resistance of Heat-Resistant Nickel Alloy Using Anodic Plasma Electrolytic Treatment

IF 0.7 Q3 Engineering

Surface Engineering and Applied Electrochemistry Pub Date : 2025-12-10 DOI:10.3103/S1068375525700887

S. N. Grigoriev, T. L. Mukhacheva, I. V. Tambovsky, I. A. Kusmanova, O. V. Sorokina, V. A. Gaponov, E. S. Mustafaev, I. V. Suminov, S. A. Kusmanov

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Abstract

A possibility of the plasma electrolytic treatment of a heat-resistant nickel alloy ChN77TiAlB, which leads to the removal of edge cracks, a decrease in hardness, and an increase in wear resistance, is shown. The volt-ampere and volt-temperature characteristics of the plasma electrolytic treatment, typical for anodic processes, are revealed. Changes in the morphology and roughness of the surface and the structure and microhardness of the surface layers are considered. It was established that the treatment in an electrolyte based on carbamide and ammonium chloride leads to the formation of nitrocarburized layers without the formation of compounds. The combined effect of both high-temperature oxidation and anodic dissolution on the morphology and roughness of the surface was determined. Tribological tests were conducted using the ball-on-disk scheme, which showed the best results after treatment at 900°C (reduction in volumetric wear by 15.7 times), when a reduction in roughness (by five times) and the presence of thick oxide layers determine a uniform running-in period, reaching a lower value of the friction coefficient, and homogenization of the alloy, accompanied by the removal of cracks, determines a softer wear mechanism. Positive results were obtained in abrasive wear tests: after treatment at 600 and 900°C, volumetric wear decreased by 2.6 and 2.2 times, respectively.

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阳极等离子体电解提高耐热镍合金的耐磨性

介绍了对耐热镍合金ChN77TiAlB进行等离子体电解处理，消除边缘裂纹，降低硬度，提高耐磨性的可能性。揭示了阳极工艺中典型的等离子体电解处理的伏安特性和伏温特性。考虑了表面形貌和粗糙度的变化以及表面层的结构和显微硬度。结果表明，在以尿素和氯化铵为基础的电解液中处理导致氮碳层的形成，而不会形成化合物。测定了高温氧化和阳极溶解对表面形貌和粗糙度的综合影响。使用球盘方案进行了摩擦学测试，结果表明，在900°C处理后效果最佳（体积磨损减少15.7倍），粗糙度降低（减少5倍）和厚氧化层的存在决定了均匀的磨合期，达到较低的摩擦系数值，合金的均匀化，伴随着裂纹的消除，决定了较软的磨损机制。磨料磨损试验取得了积极的结果：在600°C和900°C处理后，体积磨损分别下降了2.6倍和2.2倍。

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来源期刊

Surface Engineering and Applied Electrochemistry Engineering-Industrial and Manufacturing Engineering

CiteScore

1.60

自引率

22.20%

发文量

期刊介绍： Surface Engineering and Applied Electrochemistry is a journal that publishes original and review articles on theory and applications of electroerosion and electrochemical methods for the treatment of materials; physical and chemical methods for the preparation of macro-, micro-, and nanomaterials and their properties; electrical processes in engineering, chemistry, and methods for the processing of biological products and food; and application electromagnetic fields in biological systems.