PTFE/7075铝合金镶嵌型自润滑材料的摩擦学行为
Tribological Behavior of PTFE/7075 Aluminium Alloy Embedded Self-lubricating Composite
摘 要
采用模压/烧结工艺制备了PTFE/7075铝合金镶嵌型自润滑复合材料,在往复式摩擦磨损试验机上进行了摩擦磨损试验,用扫描电镜观察了复合材料磨损后的表面形貌,并探究了其磨损机理.结果表明：在试验条件下,稳态后摩擦温度为51 ℃,摩擦因数为0.087,磨损率为0.38 ×10-3 mm3/(Nm),和非镶嵌型PTFE基复合材料相比,导热性和耐磨性大大提高,而摩擦因数无明显增加;稳定磨损阶段主要表现为粘着磨损,同时伴有轻微磨粒磨损,磨损后期局部呈现疲劳特征.
聚四氟乙烯
铝合金
摩擦磨损
embedded self-lubricating composite
PTFE
aluminium alloy
friction and wear
Abstract
PTFE/7075 aluminium alloy embedded self-lubricating composite was prepared by compression mould/sintering technique.Friction and wear properties of the composite were evaluated in a reciprocating tribometer.To study the worn surfaces,SEM was used.The composite was superior to un-embedded composite in thermal conductivity and wear resistance.In the steady state,friction temperature and wear rate of the composite was 51 ℃ and 0.38×10-3 mm3/(Nm),and its friction coefficient was about 0.087,only changed slightly.Wear mechanism in the stable wear period was characterized by adhesion and slight abrasion.In the later period,local fatigue appeared.
中图分类号 TB333
所属栏目
基金项目 航空科学基金资助项目(04G52044)
收稿日期 2005/9/9
修改稿日期 2005/11/18
网络出版日期
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备注甄明晖(1979-),男,山东烟台人,硕士研究生.
引用该论文: ZHEN Ming-hui,WEN Jian-ping,CHENG Wen-kong,LI Yun-zhong. Tribological Behavior of PTFE/7075 Aluminium Alloy Embedded Self-lubricating Composite[J]. Materials for mechancial engineering, 2006, 30(10): 25～27
甄明晖,温建萍,程文孔,李云仲. PTFE/7075铝合金镶嵌型自润滑材料的摩擦学行为[J]. 机械工程材料, 2006, 30(10): 25～27
被引情况:
【1】李斯旭,刘志文, "温度对6061铝合金摩擦磨损行为的影响",机械工程材料 40, 20-24(2016)
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参考文献
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【3】Lee B H,Keum Y T,Wagoner R H.Modeling of the friction caused by lubrication and surface roughness in sheet metal forming[J].Jourmal of Material Processing Technology,2002,130-131(20):60-63.
【4】单昆仑,向定汉.高强度镶嵌型自润滑材料的设计及摩擦实验[J].南京航空航天大学学报,2005,37(2):236-239.
【5】杨丽君,王齐华,宁丽萍,等.碳纤维及石墨填充聚四氟乙烯复合材料的摩擦学性能研究[J].材料科学与工程学报,2004,22(5):705-708.
【6】Khekar J,Negulescu I,IMeletis E.Sliding wear behavior of PTFE composites[J].Wear,2002,252(5-6):361-369.
【7】王家序,陈战,秦大同,等.纳米Al2O3对聚四氟乙烯工程材料性能的影响[J].机械工程材料,2002,26(9):31-33.
【8】Unal H,Mimaroglu A,Kadloglu U.Sliding friction and wear behaviour of polytetrafluoroethylene and its composite under dry conditions[J].Materials & Design,2004,25(3):239-245.
【9】Gregory S W,Kevin D,Freudenberg,et al.A study on the friction and wear behavior of PTFE filled with alumina nanoarticles[J].Wear,2003,254(5-6):573-580.
【10】鲍登E P,泰伯D.固体的摩擦与润滑[M].北京:机械工业出版社,1982.
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