摘要
采用万能材料试验机和M 2 0 0 0型摩擦磨损试验机考察了石墨填加量对矿物聚合物复合材料的机械性能和摩擦磨损性能的影响 ,利用XRD对材料的晶体结构进行了表征 ,利用SEM观察了材料的断面和磨损表面形貌并分析了其磨损机理。结果表明 ,填加石墨对矿物聚合物材料的机械性能会有一定程度的影响 ,但可以有效地改善矿物聚合物复合材料的摩擦磨损性能 ;随石墨填加量的增大 ,材料的摩擦系数和磨损率都有明显的降低 ,当石墨体积含量为2 5v%时 ,摩擦系数和磨损率均达到最低 ,分别为 0 .4 4 3和 5 .0 5× 10 - 5mm3 N·m。研究发现 ,当石墨含量较低时 ,磨损机理主要是磨粒磨损 ,当石墨含量较高时 ,磨损机理除了磨粒磨损外还有粘着磨损。
The influence of graphite volume content on the mechanical properties and tribological behavior of kaolinite based geopolymer composite was investigated by universal material tester (DY35, made in France) and M-2000 friction and wear tester. The crystal structure was characterized by X-ray powder Diffraction meter (XRD). The fracture and worn surface morphologies were observed by scanning electron microscope (SEM). The results show that the mechanical property is decreased with the increase of graphite volume content, while the friction coefficient and wear rate decreased. The minimum friction coefficient and wear rate were recorded as 0.443 and 5.05 ×10 -5 mm 3/N·m when the volume content of graphite is 25%. The wear mechanism is abrasive wear when the volume content of graphite is low while the wear mechanism is abrasive wear and adhesion wear when the volume content of graphite is high.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2004年第6期889-892,共4页
Journal of Materials Science and Engineering
