研究了在低真空环境下,200~600℃温度区间内高硼中碳合金的高温磨损性能。结果表明:高硼中碳合金在200~500℃温度区间内磨损量随温度提高而线性增大,在600℃时摩擦系数的波动越来越剧烈,摩擦表层金属产生相变而使磨损量增大了一个数量级。低温环境下磨损表现为局部的塑性变形疲劳和氧化磨损,高温环境下摩擦表层软化并形成带状组织,产生更强的塑性流动和氧化磨损,粘着磨损不明显。在600℃时磨损亚表层的共晶硼碳化合物为颗粒状,且磨损亚表层的厚度最厚。 The high temperature wear properties of high boron medium carbon alloys in a low vacuum environment at 200-600 ℃ were investigated. The results show that the wear amount of high boron medium carbon alloy increases linearly with the increase of temperature in the temperature range of 200 ~ 500 ℃, the friction coefficient fluctuates more and more intensely at 600 ℃, the wear of the frictional surface metal increases Big order of magnitude Under low temperature environment, the wear shows partial plastic deformation fatigue and oxidative wear. Under high temperature environment, the friction surface softens and forms banded structure, which leads to stronger plastic flow and oxidation wear, and the adhesive wear is not obvious. At 600 ℃, the sub-surface eutectic boron compounds were granular, and the thickness of worn sub-surface was the thickest.