三硫化二锑在摩擦表面的摩擦化学反应  

Tribochemistry ofAntimony Trisulfide at Friction Surfaces

作　　者：刘宇雄[1] 员荣平[1] 齐士成[1] 江盛玲[1] 吕亚非[1] 

机构地区：[1]北京化工大学碳纤维与功能高分子教育部重点实验室,北京100029

出　　处：《非金属矿》2012年第2期80-82,共3页Non-Metallic Mines

基　　金：国家自然科学基金(50673012)资助

摘　　要：三硫化二锑作为固体润滑剂用于摩擦材料,对稳定摩擦因数、降低磨损率、保护摩擦盘起重要作用,但三硫化二锑在摩擦过程中发生氧化作用生成具有磨料性质的三氧化二锑和五氧化二锑,摩擦机理由粘着摩擦向磨粒摩擦转变。本实验用DSC测定了三硫化二锑的热性能并用SEM、EDX和XRD对含三硫化二锑摩擦材料的摩擦表面进行了表征,讨论了三硫化二锑的摩擦化学反应。Antimony trisulfide（Sb2S3） was usually used as solid lubricant in friction materials and played critical role in stabilizing friction coefficient,depressing specific wear rate and protecting the cast iron disc.The thermal property of antimony trisulfide were measured using differential scanning calorimetry（DSC） and the friction surfaces of friction materials were observed by scanning electron microscopy（SEM） and energy dispersive X-ray microanalysis（EDX） and X-ray diffraction analysis（XRD）.The results indicate that antimony trisulfide can be oxidized mainly to Sb2S3 and Sb2O5during friction.After oxidation,the mechanism will be changed from adhesive to abrasion friction.

关 键 词：三硫化二锑 摩擦化学 摩擦表面 制动摩擦材料 

分 类 号：TH117.1[机械工程—机械设计及理论]