Ag2CrO4 高温氧化物涂层的结构、机械和摩擦学特性

IF 2 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Thin Solid Films Pub Date : 2024-09-24 DOI:10.1016/j.tsf.2024.140533

Zhong Zeng , Lei Zhang , Vasiliy Pelenovich , Qiang Wan , Xinggang Zhan , Tao Xu , Longwei Hu , Yan Liu , Zhenggang Li , Bing Yang , Yanming Chen

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引用次数: 0

摘要

本研究采用反应射频磁控溅射技术，在不同氩氧流量比（Ar:O2 比）条件下制备了一系列 Ag2CrO4 高温自润滑氧化物涂层。研究了气体流量比对相组成、涂层形貌、空气气氛中的高温处理、机械和摩擦学性能的影响。低 Ar:O2 流动比有利于 Ag2CrO4 相的形成。在高温处理时，可观察到表面 Ag 粒子的形成以及 Ag2CrO4 相的挥发和分解，而在温度低于 500 ℃ 时，涂层的挥发和分解轻微。当 Ar:O2 的比例为 1:1 时，涂层显示出优异的综合性能，它致密、表面光滑、韧性和结合强度极佳，磨损率和摩擦系数最低，分别为 0.14 mm3/10-3N∙m 和 0.35。该涂层可在 500 ℃ 及以下的温度环境中发挥润滑作用，具有实际应用价值。

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Structure, mechanical, and tribological properties of Ag2CrO4 high-temperature oxide coatings

In this research, a series of Ag₂CrO₄ high-temperature self-lubricating oxide coatings were prepared by reactive radio frequency magnetron sputtering under different argon-oxygen flow ratio (Ar:O₂ ratio) conditions. Effects of the gas flow ratio on phase composition, coating morphology, high temperature treatment in air atmosphere, mechanical and tribological properties are studied. A low Ar:O₂ flow ratio is beneficial for the formation of Ag₂CrO₄ phase. At high temperature treatment, formation of surface Ag particle and volatility and decomposition of the Ag₂CrO₄ phase are observed, and the volatility and decomposition of the coating are slight at temperatures below 500 °C. When the Ar:O₂ ratio is 1:1, the coating shows exceptional comprehensive performance, it is dense with a smooth surface, excellent toughness and bond strength, and the lowest wear rate and coefficient of friction, which is 0.14 mm³/10⁻³N∙m and 0.35 respectively. The coating can function as a lubricant in temperature environments of 500 ℃ and below, demonstrating practical application value.

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来源期刊

Thin Solid Films 工程技术-材料科学：膜

CiteScore

4.00

自引率

4.80%

发文量

381

审稿时长

7.5 months

期刊介绍： Thin Solid Films is an international journal which serves scientists and engineers working in the fields of thin-film synthesis, characterization, and applications. The field of thin films, which can be defined as the confluence of materials science, surface science, and applied physics, has become an identifiable unified discipline of scientific endeavor.