聚四氟乙烯颗粒在复合钛基脂中的摩擦磨损性能研究

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聚四氟乙烯颗粒在复合钛基脂中的摩擦磨损性能研究
陈继国[1,2][1]哈尔滨工业大学机电工程学院,哈尔滨150001 [2]黑龙江八一农垦大学工程学院,大庆163319

摘　要:采用实验室制脂釜制备新戊基多元醇酯为基础油的钛基脂和含聚四氟乙烯颗粒的钛基脂,考察了复合钛基脂摩擦学特性,利用扫描电子显微镜和X射线电子能谱仪观察了钢球的磨斑表面形貌和主要元素的化学状态。结果表明,聚四氟乙烯降低了基础脂的摩擦系数和磨斑直径,但没有提高极压性能。钢球的磨损特征为轻微粘着磨损,其减摩抗磨机制为吸附膜和化学沉积膜协同作用的结果。[著者文摘]

关键词:复合钛基脂 摩擦磨损性能 聚四氟乙烯
分类号:　TH117.2[著者标引]文献标识码：A文章编号：1001-3997（2010）11-0103-02栏目信息：先进制造技术
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Tribological properties of PTFE as additive in titanium complex greaseCHEN Ji-guo1School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001,China） （2College of Engineering,Heilongjiang Bayi Agricultural University,Daqing 163319,ChinaAbstract:Neopentyl polyol ester based titanium complex greases were prepared in laboratory.Tribological properties of 2 titanium complex greases were evaluated by a four-ball tester.Morphology and chemical states of typical elements on the wear scar of were analyzed by SEM and XPS,respectively.PTFE exhibited preferable properties of anti-wear and friction reduction,and seemed to be independent of load-carrying capacity for based grease.The reason that adhesive wear was slowed down was that a synergistic effect between the adsorptive film and chemical sediment on surface of the steel ball.[著者文摘]

Key words:Titanium complex greases; Friction and wear behavior; PTFE