滑动受流条件下,树脂基滑板材料的温升会影响滑板使用的稳定性.采用炭化-液相浸渍法对滑板进行热稳定性及致密化处理,系统分析了热处理前后滑板性能的变化,并对致密化效果进行评价,利用磨损表面扫描图像分析摩擦磨损机理.结果表明:经过800℃热处理后,滑板的耐温性提高;热处理及浸渍后,受电弓滑板试样电阻率明显减小,热处理之后电阻率降低约100%;冲击强度降低,摩擦因数增大,体积磨损量增加;经过4次致密化处理后,滑板的气孔率下降约45%;冲击性能和摩擦磨损性能有所提高;未热处理的受电弓滑板在摩擦过程中主要的机械磨损形式是磨粒磨损和黏着磨损;热处理后磨粒磨损是主要磨损形式.
参考文献
[1] | S. Kubo;K. Kato .Effect of arc discharge on wear rate of Cu-impregnated carbon strip in Unlubricated sliding against Cu trolley under electric current[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,1998(2):172-178. |
[2] | S. G. Jia;P. Liu;F. Z. Ren;B. H. Tian;M. S. Zheng;G. S. Zhou .Sliding wear behavior of copper alloy contact wire against copper-based strip for high-speed electrified railways[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2007(7/8):772-777. |
[3] | X. C. Ma;G. Q. He;D. H. He;C. S. Chen;Z. F. Hu .Sliding wear behavior of copper-graphite composite material for use in maglev transportation system[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2008(7/8):1087-1092. |
[4] | 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. |
[5] | 戴利民 .滑板材料受流摩擦磨损性能的研究[D].中国铁道科学研究院,2001. |
[6] | LIU H P;CARNES R W;GULLY J H.Measurement and prediction of brush interface temperature at sliding electrical contact[A].PA:Piscataway,1993:143-148. |
[7] | 钟涛生,易茂中,葛毅成,黄伯云.碳纤维增强碳基复合材料增密方法及其特点[J].金属热处理,2009(02):111-114. |
[8] | MICHAUD V;MORTENSEN A .Infiltration pressing of fibre reinforced composites:governing phenomena[J].Composites,2001,32:981-996. |
[9] | 王荣顺.酚醛树脂热裂解产物的结构研究[J].高等学校化学学报,1990(10):1161. |
[10] | 黄发荣;焦扬声.酚醛树脂及其应用[M].北京:化学工业出版社,2003:433-434. |
[11] | 李贺军,费杰,齐乐华,付业伟,李新涛,王鹏云.孔隙率对碳纤维增强纸基摩擦材料摩擦磨损性能的影响[J].无机材料学报,2007(06):1159-1164. |
[12] | JU C P;LEE K J;WU H D et al.Low-energy wear behavior of polyacrylonitrile,fiber-reinforced,pitch-matrix,carbon-carbon composites[J].Carbon,1994,32(05):971-977. |
[13] | Da Hai He;Rafael Manory .A novel electrical contact material with improved self-lubrication for railway current collectors[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2001(7):626-636. |
[14] | 于澍,李溪滨,刘根山,熊翔,黄伯云.热解炭结构对炭/炭复合材料摩擦磨损性能的影响[J].中南工业大学学报(自然科学版),2002(06):613-616. |
[15] | 葛毅成,易茂中,黄伯云.C/C复合材料与石墨材料干态摩擦磨损行为[J].复合材料学报,2004(06):93-97. |
[16] | 范尚武,徐永东,张立同,成来飞,楼建军.C/SiC摩擦材料的制备及摩擦磨损性能[J].无机材料学报,2006(04):927-934. |
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