纳米Cu粉填充碳纤维/PTFE复合材料的摩擦磨损性能  

Tribological Properties of Nano-Cu Reinforced Carbon Fiber/PTFE Composites

作　　者：孙义牛[1] 穆立文[1] 史以俊[1] 冯新[1] 陆小华[1] 

机构地区：[1]南京工业大学材料化学国家重点实验室,江苏南京210009

出　　处：《润滑与密封》2011年第8期38-41,66,共5页Lubrication Engineering

基　　金：江苏省应用化学与材料领域研究生创新与学术交流中心开放基金项目(2010ACMC05);国家自然科学基金青年基金项目(51005123)

摘　　要：考察纳米Cu粉含量、粒径对碳纤维/PTFE复合材料摩擦磨损性能的影响,采用扫描电子显微镜分析磨损面和对偶面转移膜形貌,并探讨其磨损机制。结果表明:纳米Cu粉能提高碳纤维/PTFE复合材料的耐磨性,在高载荷下,纳米Cu粉的增强效果更加明显;纳米Cu粉的粒径越小,复合材料的耐磨性越好;添加质量分数0.3%纳米Cu粉的碳纤维/PTFE复合材料耐磨性最优,1.4 m/s,200 N下实验条件下,其磨损率比未添加时降低了45%;SEM分析显示纳米Cu粉能在对偶面上形成平整致密的转移膜,具有显微增强作用。The friction and wear properties of CF/PTFE composites filled with different content and size of nano-Cu were studied, the worn surface and transfer film were investigated by SEM, the abrasion mechanism was discussed. The resuits reveal that nano-Cu could significantly improve the wear resistance of CF/PTFE composites, especially in high load. The smiler the size of nano-Cu, the better the wear resistance of nano-Cu filled composite materials. The addition of 0.3% nano-Cu（50 nm） could improve the wear resistance best,the wear rate decreases by 45% under 1.4 m/s and 200 N compared with CF/PTFE composite. SEM study shows that nano-Cu has good microscopic reinforced effect, it is helpful to form smooth and compact transfer film on the surface of counterparts.

关 键 词：纳米铜粉 碳纤维 聚四氟乙烯 摩擦磨损 

分 类 号：TB333[一般工业技术—材料科学与工程] TH117.1[机械工程—机械设计及理论]