C_f/Cu/C复合材料的抗弯性能
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摘要
分别以无纬布/网胎/铜网(A型)和网胎/铜网型(B型)预制体为增强体,采用化学气相渗透和树脂浸渍-炭化法增密制备以热解炭/树脂炭为基体的3种炭纤维混杂铜网增强炭基体(C_f/Cu/C)复合材料,热解炭在热解炭/树脂炭基体中的体积分数分别为38%(M1)、29%(M2)、19%(M3)。选用Instron3369型材料试验机测试材料的抗弯强度。研究预制体类型和热解炭含量对复合材料力学性能的影响。结果表明,预制体类型和热解炭含量是影响复合材料抗弯强度的重要因素。在垂直和平行方向上,A型预制体及B型预制体试样的抗弯强度都随热解炭含量的降低而降低。且对同一试样,垂直方向的抗弯强度均优于平行方向上的抗弯强度,但差异较小;A型C_f/Cu/C复合材料较B型C_f/Cu/C复合材料有更高的抗弯强度。弯曲断裂时,炭纤维从热解炭和树脂炭层中拔出,断口呈台阶状。
Using non-woven fabric/fibre web/copper mesh(A-type) and fibre web/copper mesh(B-type) as reinforcements, three kinds of C_f/Cu/C composites were prepared by chemical vapor infiltration and impregnationcarbonization with resin carbon method. The percentage of pyrolytic carbon were 38%(M1), 29%(M2), 19%(M3) in the matrix. Respectively the flexural property of the composite was measured on Instron-3369 mechanical testing machine.The effects of type of preform and pyrolytic carbon content on mechanical property were investigated. The results show that with the decrease of pyrolytic carbon content, the flexural strength of A-type and B-type composites decreases gradually in vertical and parallel direction. For the same specimen, the flexural strength of C_f/Cu/C composites in the vertical direction is better than that of parallel direction, but the difference is small. Compared with B-type C_f/Cu/C composites, A-type C_f/Cu/C composites have better mechanical property. When the bending is carried out, carbon fibers from pyrolytic carbon and resin carbon layers are pulled out, and fracture morphology is step-like.
Using non-woven fabric/fibre web/copper mesh(A-type) and fibre web/copper mesh(B-type) as reinforcements, three kinds of C_f/Cu/C composites were prepared by chemical vapor infiltration and impregnationcarbonization with resin carbon method. The percentage of pyrolytic carbon were 38%(M1), 29%(M2), 19%(M3) in the matrix. Respectively the flexural property of the composite was measured on Instron-3369 mechanical testing machine.The effects of type of preform and pyrolytic carbon content on mechanical property were investigated. The results show that with the decrease of pyrolytic carbon content, the flexural strength of A-type and B-type composites decreases gradually in vertical and parallel direction. For the same specimen, the flexural strength of C_f/Cu/C composites in the vertical direction is better than that of parallel direction, but the difference is small. Compared with B-type C_f/Cu/C composites, A-type C_f/Cu/C composites have better mechanical property. When the bending is carried out, carbon fibers from pyrolytic carbon and resin carbon layers are pulled out, and fracture morphology is step-like.
引文
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[2]MA S,XU E,ZHU Z,et al.Mechanical and wear performances of aluminum/sintered-carbon composites produced by pressure infiltration for pantograph sliders[J].Powder Technology,2018,326:54-61.
[3]EBRAHIM A,KOKABI A H.Friction stir soldering:A novel route to produce graphite-copper dissimilar joints[J].Materials&Design,2017,116:599-608.
[4]MA X C,HE G Q,HE D H,et al.sliding wear behavior of copper-graphite composite material for use in maglev transportation system[J].Wear,2008,265(7):1087-1092.
[5]LIN X Z,ZHU M H,JILIANG M O,et al.Tribological and electric-arc behaviors of carbon/copper pair during sliding friction process with electric current applied[J].Transactions of Nonferrous Metals Society of China,2011,21(2):292-299.
[6]DING T,CHEN G X,WANG X,et al.Friction and wear behavior of pure carbon strip sliding against copper contact wire under AC passage at high speeds[J].Tribology International,2011,44(4):437-444.
[7]DING T,CHEN G X,BU J,et al.Effect of temperature and arc discharge on friction and wear behaviours of carbon strip/copper contact wire in pantograph-catenary systems[J].Wear,2011,271(9/10):1629-1636.
[8]KUBOTA Y,NAGASAKA S,MIYAUCHI T,et al.Sliding wear behavior of copper alloy impregnated C/C composites under an electrical current[J].Wear,2013,302(1/2):1492-1498.
[9]WANG Y A,LI J X,YAN Y,et al.Effect of electrical current on tribological behavior of copper-impregnated metallized carbon against a Cu-Cr-Zr alloy[J].Tribology International,2012,50:26-34.
[10]YIN J,ZHANG H,TAN C,et al.Effect of heat treatment temperature on sliding wear behaviour of C/C-Cu composites under electric current[J].Wear,2014,312(1/2):91-95.
[11]NAKAMUR K,SATO M,MATSUZAKI R,et al.Wear properties of carbon composites reinforced by carbon nanofibers derived from iodine-treated bacterial cellulose[J].Carbon,2017,114:749-755.
[12]HEKNER B,MYALSKI J,VALLE N,et al.Friction and wear behavior of Al-SiC(n)hybrid composites with carbon addition[J].Composites Part B:Engineering,2017,108:291-300.
[13]QUEIPO P,GRANDA M,SANTAMAR R,et al.Preparation of pitch-based carbon-copper composites for electrical applications[J].Fuel,2004,83(11/12):1625-1634.
[14]HE D H,MANORY R.A novel electrical contact material with improved self-lubrication for railway current collectors[J].Wear,2001,249(7):626-636.
[15]JANG Y,KIM S,LEE S,et al.Fabrication of carbon nano-sized fiber reinforced copper composite using liquid infiltration process[J].Composites Science&Technology,2005,65(5):781-784.
[16]杨琳,易茂中,冉丽萍.C/C/Cu及C/Cu复合材料摩擦磨损行为比较[J].复合材料学报,2009,26(6):97-102.YANG Lin,YI Maozhong,RAN Liping,et al.Comparative study of friction and wear behavior of C/C/Cu and C/Cu composites[J].Library Theory and Practice,2009,26(6):97-102.
[17]胡锐,李海涛,薛祥义,等.Ti对C/Cu复合材料界面润湿及浸渗组织的影响[J].中国有色金属学报,2008,18(5):840-844.HU Rui,LI Haitao,XUE Xiangyi,et al.Effect of Ti on interface wettability and microstructure of C/Cu composites prepared by infiltration[J].Transaction of nonferrous metals of China,2008,18(5):840-844.
[18]王其坤,胡海峰,简科,等.先驱体转化法制备2D Cf/SiC-Cu复合材料及其性能[J].新型炭材料,2006,21(2):151-155.WANG Qikun,HU Haifeng,JIAN Ke,et al.Preparation and properties of 2D Cf/SiC-Cu composites produced by precursor infiltration and pyrolysis[J].New Carbon Materials,2006,21(2):151-155.
[19]DENG C,YIN J,ZHANG H,et al.The tribological properties of Cf/Cu/C composites under applied electric current[J].Tribology International,2017,116:84-94.
[20]杨柳,姜韬,韩明,等.基体炭种类对C/C复合材料断裂韧性的影响[J].炭素,2018,16(2):55-57.YANG Liu,JIANG Tao,HAN Ming,et al.Effect of different matrix on C/C composites fracture toughness[J].Carbon,2018,16(2):55-57.
[21]WANG Pei,ZHANG Hongbo,YIN Jian,et al.Effect of pyrolytic carbon interface thickness on conductivity and mechanical and wear properties of copper mesh modified carbon/carbon composite[J].Materials and Design,2018:302-311.
[22]REZNIK B,GUELLALI M,GERTHSEN D,et al.Microstructure and mechanical properties of carbon-carbon composites with multilayered pyrocarbon matrix[J].Materials Letters,2002,52(1/2):14-19.