人工合成蛇纹石的摩擦性能

Frictional behaviour of synthetic serpentine

蛇纹石具有独特的层状结构,在工业润滑油基础油中添加蛇纹石能够起到抗磨、减摩、自修复的作用。为了提高蛇纹石的纯度,本文通过模拟天然蛇纹石的形成条件,在水热环境下,制备了蛇纹石粉体,利用X射线衍射仪、透射电子显微镜、扫描电子显微镜和红外光谱等手段对产物的结构进行表征,结果表明合成的Mg3Si2O5(OH)4有纤蛇纹石和利蛇纹石两种结构。采用干法分散对蛇纹石粉体进行表面处理并分散于基础油中,通过MS-10A型摩擦磨损试验机测试,结果表明纤蛇纹石的抗磨、减摩性能优于利蛇纹石,摩擦系数较未添加蛇纹石降低41.2%以上。

The serpentine has a special layer structure with anti-wear,friction reducing and self-repair func-tions. Mg3Si2O5（OH）4 are synthesized by alkaline hydrothermal reaction with different temperatures. The sam-ples are characterized by X-ray diffraction（XRD）,scanning electron microscopy（SEM）and transmission electron microscope（TEM）. The results show that chrysotile and lizardite are synthesized. Surface treatment with dry method is used and dispersed in basic oil.The frictional behaviour were examined and compared by MS-10A multi-functional tester,the results show that the frictional behaviour of chrysotile is better than lizard-ite. The friction coefficients are reduced by 41.2%.