层状硅酸盐自修复材料的摩擦学性能研究

Study on Tribological Properties of Stratified Silicate Self-repair Materials

采用端面摩擦磨损试验机考察了层状硅酸盐自修复材料的摩擦学性能,利用SEM、EDS和纳米压痕仪对摩擦表面进行了形貌、元素和微观力学性能分析。结果表明,层状硅酸盐自修复材料能够显著降低摩擦副表面粗糙度,改善摩擦副的润滑状态而减少摩擦阻力,可使摩擦因数均值由0.09降低至0.03,并能够在摩擦表面形成一层富含C、O、Si、Al、Mg等元素的高硬度表面改性修复层,有望应用于延长摩擦零部件的使用寿命。

The tribological properties of stratified silicate self-repair material was studied by using end-face friction and wear tester. The morphologies, element distributions and micro-mechanical properties of the worn surface were investigated by means of scanning electron microscopy （SEM）, energy dispersive spectrometry （EDS） and nanoindentation tester, respectively. The results show that stratified silicate self-repair material can reduce observably surface roughness of tribo-couple, improve lubricating status of tribo-couple and reduce frictional resistance.The friction coefficient of tribo-couple could decrease from 0.09 of base oil lubricating to 0.03 of addition of self-repair material. Moreover, stratified silicate self-repair material in lubricating oil facilitated a high-hardness surface repair layer riched in elements of carbon, iron, silicon, aluminum and magnesium arise on worn surface, the self-repair material will be applied to prolong the service time of worn parts.