采用MMW-10型摩擦磨损试验机评价了分别填充铜粉、SiC、h-BN的PTFE基环氧粘结固体润滑涂层在载荷为128N、转速为170 r·min-1、室温、干摩擦条件下的滑动摩擦磨损性能,并分析了其磨痕形貌和磨损机理.结果表明:与未加填料试样相比,SiC和h-BN填充试样的磨损量分别下降了60％和65.3％,铜填充试样的磨损量仅为4.2 mg,为未加填料试样的29.2％;未加填料试样的磨损表面粗糙,且呈现出大量的带状结构,而填料试样的磨痕深度和宽度更小,且更光滑;填料改变了粘结涂层的磨损机理,使之由PTFE的粘着磨损转变为以填料的磨粒磨损为主、PTFE粘着磨损为辅的复合磨损,这种转变增强了涂层的承载能力以及涂层与基材表面之间的粘结强度,提高了涂层的耐磨性能.
参考文献
| [1] | 竺士伟.固体干膜润滑剂技术及其应用[J].航天工艺,2001(05):20-25. |
| [2] | 乔红斌,郭强.高分子固体润滑耐磨涂层研究进展[J].机械工程材料,2004(02):1-3,23. |
| [3] | W. Gregory Sawyer;Kevin D. Freudenberg;Praveen Bhimaraj;Linda S. Schadler .A study on the friction and wear behavior of PTFE filled with alumina nanoparticles[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2003(5/6):573-580. |
| [4] | 陈建敏,冶银平,周惠娣.聚四氟乙烯基粘结固体润滑涂层及其应用[C].第9届氟硅涂料行业年会论文集,2008:181-184. |
| [5] | 叶素娟,范清,邓联勇,王有和.铜粉对PTFE复合材料力学及摩擦学性能的影响[J].润滑与密封,2010(09):60-64,68. |
| [6] | Yunxia Wang;Fengyuan Yan .Tribological properties of transfer films of PTFE-based composites[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2006(11/12):1359-1366. |
| [7] | Yunxia Wang;Fengyuan Yan .A study on tribological behaviour of transfer films of PTFE/bronze composites[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2007(7/8):876-882. |
| [8] | 姜厚温,冯建林,陈宗浩,杜建华.添加n-SiC多元PTFE复合材料磨损机理研究[J].中国表面工程,2007(06):11-13. |
| [9] | ZHAO-ZHU ZHANG;WEI-MIN LIU;QUN-JI XUE .Effect of Various Kinds of Fillers on the Tribological Behavior of Polytetrafluoroethyoene Composites Under Dry and Oil-Lubricated Conditions[J].Journal of Applied Polymer Science,2001(11):1891-1897. |
| [10] | Y. J. Shi;X. Feng;H. Y. Wang;C. Liu;X. H. Lu .Effects of filler crystal structure and shape on the tribological properties of PTFE composites[J].Tribology International,2007(7):1186-1194. |
| [11] | 王家序,陈战,秦大同.聚四氟乙烯复合材料的摩擦磨损性能研究[J].农业机械学报,2002(04):99-101,108. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%