在高温高压下,通过金属浸渗法将熔融的金属铜和铝压铸到多孔碳基体中制备出C/Cu和C/Al复合材料.采用往复式摩擦试验机进行干摩擦磨损试验,研究载荷、滑动速度对复合材料磨损率的影响,通过SEM、EDS探究复合材料的磨损表面形貌和成分.结果表明:材料的磨损率随载荷和速度的增加而上升.与C/Al复合材料相比,C/Cu复合材料的摩擦系数较高但磨损体积较小.随载荷的增加,C/Cu和C/A1复合材料的摩擦系数先增后降,并在5N载荷下分别达到最大值0.228和0.206.随速度的增加,C/Al复合材料的摩擦系数先降后升,并在0.05m/s时达到最小值0.155;而C/Cu复合材料的摩擦系数变化并不明显.经过分析,复合材料的磨损机制包括磨粒磨损、粘着磨损和疲劳破坏.氧化磨损仅发生在C/A1复合材料的滑动过程中.
参考文献
| [1] | L. Dong;G. X. Chen;M. H. Zhu;Z. R. Zhou .Wear mechanism of aluminum-stainless steel composite conductor rail sliding against collector shoe with electric current[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2007(1/6):598-603. |
| [2] | S.G.Jia;P.Liu;F.Z.Ren;B.H.Tian,M.S.Zheng,G.S.Zhou .Wear Behaviour of Cu-Ag-Cr Alloy Wire under Electrical Sliding[J].Materials Science and Engineering A,2005,398(1-2):166-262. |
| [3] | T. Ding;G. X. Chen;M. H. Zhu;W. H. Zhang;Z. R. Zhou .Influence of the spring stiffness on friction and wear behaviours of stainless steel/copper-impregnated metallized carbon couple with electrical current[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2009(Pt.2):1080-1086. |
| [4] | 符蓉,高飞,宋宝韫,于庆军.铜-石墨烧结材料中第三体对摩擦磨损性能的影响[J].材料科学与工程学报,2008(04):554-558. |
| [5] | 黄荔海,李贺军,李克智,胡志彪.不同转速及载荷下炭/炭复合材料的摩擦磨损性能[J].材料科学与工程学报,2006(03):330-333,357. |
| [6] | 耿黎明,李红,任慕苏,孙晋良.低能载条件下C/C复合材料滑动摩擦磨损性能[J].材料科学与工程学报,2010(05):726-730. |
| [7] | 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. |
| [8] | 王砚军,刘佐民,杨丽颖.浸渗型TiC/FeCrWMoV金属陶瓷高温自润滑特性及其润滑机理[J].材料科学与工程学报,2009(06):850-854,849. |
| [9] | 黄金,柯秀芳.熔融自发浸渗制备多孔陶瓷复合相变储能材料[J].材料科学与工程学报,2007(03):336-340. |
| [10] | K. Rajkumar;K. Kundu;S. Aravindan;M.S. Kulkarni .Accelerated wear testing for evaluating the life characteristics of copper-graphite tribological composite[J].Materials & design,2011(5):3029-3035. |
| [11] | W. Ma;J. Lu;B. Wang .Sliding friction and wear of Cu-graphite against 2024, AZ91D and Ti6A14V at different speeds[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2009(11/12):1072-1081. |
| [12] | Wu B;Yu XH;Zhang B;Xu BS .Preparation and characterization of graphite-nickel composite coatings by automatic brush plating[J].Surface & Coatings Technology,2008(10):1975-1979. |
| [13] | M. Kestursatya;J.K. Kim;P.K. Rohatgi .Wear performance of copper-graphite composite and a leaded copper alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):150-158. |
| [14] | Gongjun Cui;Qinling Bi;Shengyu Zhu;Jun Yang;Weimin Liu.Tribological properties of bronze-graphite composites under sea water condition[J].Tribology International,2012:76-86. |
| [15] | Palloma V. Muterlle;Ilaria Cristofolini;Melania Pilla;Wolfgang Pahl;Alberto Molinari .Surface durability and design criteria for graphite-bronze sintered composites in dry sliding applications[J].Materials & design,2011(7):3756-3764. |
| [16] | Yang, H.;Luo, R. .Effect of coal tar pitch modified by sulfur as a binder on the mechanical and tribological properties of bronze-impregnated carbon-matrix composites[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2011(6):2929-2935. |
| [17] | 林修洲,朱旻昊,莫继良,陈光雄,金学松,周仲荣.碳/铜载流滑动摩擦过程中摩擦学与电弧行为[J].中国有色金属学报（英文版）,2011(02):292-299. |
| [18] | Aravind Dasari;Zhong-Zhen Yu;Yiu-Wing Mai .Fundamental aspects and recent progress on wear/scratch damage in polymer nanocomposites[J].Materials Science & Engineering. R, Reports,2009(2):31-80. |
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%