中国空间科学技术（中英文）2025，Vol.45Issue(2)：25-32,8.DOI:10.16708/j.cnki.1000-758X.2025.0019
真空中温度对柔性环滚动载流摩擦性能的影响
Effect of vacuum temperature on current-carrying tribological performance of flexible ring
摘要
Abstract
The current-carrying frictional pair composed of inner raceway,outer raceway,and flexible ring is the conductive core component of the space rotating electrical transmission mechanism.To investigate the effect of vacuum temperature on the transmission performance of flexible rings,rolling current-carrying tribological tests were carried out in the temperature range of-30 ℃～120 ℃ in 1 ×10-3Pa vacuum.As the temperature increased from-30 ℃ to 120 ℃,the steady-state average friction force decreased from 3.96 N to 1.48 N,and the elastic force decreased from 6.8 N to 5.9 N.There was no significant change in the average contact resistance and wear amount.Microscopic morphology showed that the wear width increased from 47.37 μm to 66.71 μm,the roughness of the worn area dropped from 0.45 μm to 0.25 μm.The extrusion deformation caused by high-temperature softening of materials should be the main reason for the widening of wear marks.Material softening and its concomitant widening of wear marks lead to a decline in the elastic force of the flexible ring.关键词
温度/磨损宽度/滚动载流摩擦/软化/真空Key words
temperature/wear width/rolling current-carrying tribology/soften/vacuum分类
机械工程引用本文复制引用
宋晨飞,王炳辉,刘自立,侯欣宾,张永振..真空中温度对柔性环滚动载流摩擦性能的影响[J].中国空间科学技术（中英文）,2025,45(2):25-32,8.基金项目
民用航天技术预先研究项目(D010103) （D010103）
