空间摩擦学及其材料的研究进展

发布时间：2018-03-09 06:14

本文选题：摩擦学材料　切入点：空间环境　出处：《航空材料学报》2017年02期 　论文类型：期刊论文

【摘要】：综述了空间苛刻服役环境及其对空间摩擦学材料性能影响的研究,深入分析了空间环境对空间摩擦材料、空间耐磨材料和空间减摩材料摩擦磨损机理的影响。空间摩擦材料主要应用于空间对接机构及空间机械臂中,应具有稳定的摩擦力矩与优良的抗黏着磨损性能。空间耐磨材料主要应用于空间轴承、齿轮和密封件等部件中,如FeAl金属间化合物在高温下抗蠕变性急剧下降,常通过添加金属元素(Ce,Cr,Mn,Mo,Nb,W等)及固体润滑剂提高材料抗蠕变性能;Ti及其合金常通过表面改性改善黏着性;与基体结合性良好的耐磨涂层可以较大程度的改善材料的耐磨性。空间减摩材料主要指润滑剂与自润滑材料,如软金属Pb、高分子材料PI和PTFE等,以及某些金属的氧化物,氟化物和硫化物等,能较好地降低材料表面的摩擦因数。随着航天科技的发展,亟须开发新型高性能空间摩擦学材料,建立摩擦学材料数据库,以应对国际航天技术发展的挑战。
[Abstract]:In this paper, the research of space harsh service environment and its influence on the performance of space tribological materials are reviewed, and the effects of space environment on space friction materials are deeply analyzed. The influence of friction and wear mechanism of space wear resistant material and space friction reducing material. Space friction material is mainly used in space docking mechanism and space manipulator. Space wear resistant materials are mainly used in space bearing, gear and sealing parts, such as FeAl intermetallic compound, whose creep resistance decreases sharply at high temperature. The creep resistance of the material is often improved by adding the metal element CeCrCrCrCrCrCrMnMnMoNbHW) and solid lubricant. Ti and its alloys are often modified by surface modification to improve the adhesion. The wear resistance of the material can be improved greatly by the wear-resistant coating with good bonding to the substrate. Space antifriction material mainly refers to lubricant and self-lubricating material, such as soft metal Pb, polymer material Pi and PTFE, and some metal oxides. With the development of space science and technology, it is necessary to develop new high performance space tribological materials and establish tribological materials database. To meet the challenges of international space technology development.
【作者单位】：中南大学粉末冶金国家重点实验室;
【基金】：国家自然科学基金(51175516,51475476) 粉末冶金国家重点实验室资助(621020006)
【分类号】：TB39

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