【摘要】 在不同温度下对中间相碳微球(MCMB)进行热处理,将处理过的MCMB作为添加剂分散到季戊四醇酯中,利用Optimal SRV高温摩擦磨损试验机在300℃下考察了它们的摩擦性能。原始MCMB粉末的透射电镜分析和激光喇曼分析表明:热处理强度对MCMB的结构有不同程度的影响,可以改变MCMB的层状构造。定义的摩擦处理强度(W)可以用来比较MCMB在摩擦过程中结构转变的难易,W计算值小的MCMB容易发生结构转化。磨损表面的喇曼光谱分析结果表明:原始层状结构好、W计算值小的MCMB容易在摩擦过程中向更为有序的结构转化,得到最大尺寸的微晶石墨。更多还原

【Abstract】 Three types of meso-carbon microbeads (MCMB) with different initial structures were prepared by different heat-treatments. The tribological behaviors of these MCMB were demonstrated on an Optimal SRV tribotester at 300℃ when added as a special additive in pentaerythritol. Raman spectroscopy analysis and TEM photos of MCMB revealed that the structures of MCMB were layered configurations in certain ranges influenced greatly by heat-treatment intensity in the manufacturing process. The calculated value of friction treatment intensity ( W) justified the easiness of the tribological transformation of the MCMB. The MCMB with low value of W transformed more easily into more ordered structure during tribological process. The results of tribo-test and Raman spectroscopy analysis showed that MCMB with more ordered initial structures and lower value of W can form the most ordered structure and yield the largest microcrystalline planar size (La).更多还原