宽温域低摩擦涂层研究现状

Research Status of Low-friction Coatings in Wide Temperature Range

减摩耐磨涂层是高端装备中传动机构可靠运行的关键材料。在温度变化较大的工况条件下如何降低运动副的摩擦磨损,一直制约着高端装备技术的发展,探究宽温域低摩擦涂层对高速发展的现代工业技术具有迫切需求。简述目前宽温域低摩擦涂层的研究现状,归纳和评述金属复合基涂层、氧化物基涂层和氮化物基涂层等三类宽温域低摩擦涂层的组成、结构、摩擦学性能以及减摩机理等,得到单一结构的固体润滑涂层很难实现发展的需求。提出制备多层涂层、预处理(织构化、预氧化等)等技术路线去实现运动副良好的摩擦学性能,解决常规固体润滑涂层温度敏感性问题,为宽温域低摩擦涂层的相关研究发展提供新思路。

Antifriction and wear-resistant coatings are the key material for reliable operation of transmission mechanism in high-end equipment. How to reduce the friction and wear of the motion pair under the conditions of large temperature changes has always restricted the development of high-end equipment technology. Therefore, there is an urgent need to explore low-friction coatings in a wide temperature range for the rapid development of modern industrial technology. This paper reviews the current research status of low-friction coatings in wide temperature range, summarizes the composition, structure, tribological properties and lubricating mechanism of three kinds of low-friction coatings in wide temperature range, including metal composite coating, nitride coating and oxide coating. It is difficult to obtain a solid lubricating coatings with a single structure to meet the development needs. Technical routes such as preparation of multi-layer coatings and pretreatment(texturing, pre-oxidation, etc.) are proposed to achieve good tribological properties of the motion pair, which solves the problem of temperature sensitivity of conventional solid lubricating coatings, and provides a new idea for the related research and development of low-friction coatings in a wide temperature range.