采用粉末冶金法制备碳纳米管-银-石墨复合材料电接触材料,在带电状态下(10A/cm2),研究了压力对碳纳米管-银-石墨复合材料接触电压降的影响,结果表明:当压力较小时(10N/cm2,5N/cm2),由于电刷的跳动产生火花,导致复合材料接触电压降较大;随压力增加,复合材料电刷和换向器的实际接触面积增大,接触电阻减小,电刷的接触电压降下降;由于碳纳米管的研磨作用,阻止了润滑膜随磨损时间延长而增厚,使电刷的接触电压降维持在一个较稳定的数值上.
参考文献
| [1] | H. Zhao;G. C. Barber;J. Liu .Friction and wear in high speed sliding with and without electrical current[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2001(5/6):409-414. |
| [2] | 凯儿A;默儿W A;维纳里库E.电接触和电接触材料[M].北京:机械工业出版社,1993 |
| [3] | He H D;Manory R .A novel electrical contact materials with imroved self-lubrication for railway current collectors[J].Wear,2001,249:626-636. |
| [4] | 刘先曙.电接触材料的研究和应用[M].北京:国防工业出版社,1979 |
| [5] | 日本碳素材料学会.电机用电刷极其使用方法[M].北京:机械工业出版社,1982 |
| [6] | Wang C F;Ying M F;Feng Y .Physical properties of short carbon fiber reinforced silver composites[J].Acta Metallurgica Sinica,1994,7:157-160. |
| [7] | Erik T. Thostenson;Zhifeng Ren;Tsu-Wei Chou .Advances in the science and technology of carbon nanotubes and their composites: a review[J].Composites science and technology,2001(13):1899-1912. |
| [8] | Ounaies Z;Park C;Wise K E;Siochi E J Harrison J S .Electrical properties of single wall carbon nanotube reinforced polyimide composites[J].Composites Science and Technology,2003,63:1637-46. |
| [9] | Yi F;Yuan H L .Electroless plating of carbon nanotubes with silver[J].Journal of Materials Science,2004,39:3241-43. |
| [10] | V. V. Konchits;C. K. Kim .Electric current passage and interface heating[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,1999(1):31-40. |
| [11] | 张敏 .碳纳米管-银-石墨复合材料电磨损性能的研究[D].合肥工业大学,2005. |
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%