CVD碳粉含量对铜基粉末冶金离合器材料性能的影响
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摘要
以化学气相沉积(CVD)法制备的C/C复合材料切削碎屑作为碳粉来源,采用粉末冶金方法制备不同碳粉质量分数的铜基粉末冶金摩擦材料,利用扫描电镜(SEM)和能谱分析仪(EDS)分析材料摩擦表面的微观结构和成分,并研究该材料的力学性能和摩擦磨损性能。研究结果表明:CVD碳粉-铜基粉末冶金材料的布氏硬度、密度、抗压强度均随化学气相沉积碳粉含量的增大而减小,开孔隙率随碳粉含量的增加而增大;CVD碳粉为光滑层热解炭,CVD碳粉质量分数为1%～2%的CVD碳粉-铜基粉末冶金样品的主要磨损机理为磨粒磨损,质量分数为3%～5%的CVD碳粉-铜基粉末冶金样品的磨损机理为磨粒磨损和剥层磨损共同作用。
The cutting debris of C/C composites prepared by chemical vapor deposition(CVD) was used as the source of carbon powder. Chemical vapor deposition(CVD) carbon powder/copper-based powder metallurgy friction materials with different CVD carbon powder contents were prepared by powder metallurgy method. The microstructure and composition of the friction surface of the materials were analyzed by scanning electron microscope(SEM) and energy dispersive spectrometer(EDS). The mechanical properties, friction and wear properties were also studied. The results show that the brinell hardness, density and compressive strength of CVD carbon powder/copper-based powder metallurgy materials decrease and the open porosity increases respectively with increasing the content of CVD carbon powder. The CVD carbon powder is smooth layer pyrolytic carbon. The main wear mechanism of 1%-2% CVD carbon powder/copper-based powder metallurgy materials is abrasive wear, and the main wear mechanism of 3%-5% CVD carbon powder/copper-based powder metallurgy materials samples is mixture of abrasive and delamination wear.
The cutting debris of C/C composites prepared by chemical vapor deposition(CVD) was used as the source of carbon powder. Chemical vapor deposition(CVD) carbon powder/copper-based powder metallurgy friction materials with different CVD carbon powder contents were prepared by powder metallurgy method. The microstructure and composition of the friction surface of the materials were analyzed by scanning electron microscope(SEM) and energy dispersive spectrometer(EDS). The mechanical properties, friction and wear properties were also studied. The results show that the brinell hardness, density and compressive strength of CVD carbon powder/copper-based powder metallurgy materials decrease and the open porosity increases respectively with increasing the content of CVD carbon powder. The CVD carbon powder is smooth layer pyrolytic carbon. The main wear mechanism of 1%-2% CVD carbon powder/copper-based powder metallurgy materials is abrasive wear, and the main wear mechanism of 3%-5% CVD carbon powder/copper-based powder metallurgy materials samples is mixture of abrasive and delamination wear.
引文
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[2]WANG P,ZHANG H,YIN J,et al.Wear and friction behaviours of copper mesh and flaky graphite-modified carbon/carbon composite for sliding contact material under electric current[J].Wear,2017,380:59-65.
[3]ZHANG X,ZHANG Y,DU S,et al.Study on the tribological performance of copper-based powder metallurgical friction materials with cu-coated or uncoated graphite particles as lubricants[J].Materials,2018,11(10):201-206.
[4]SHARUDIN H,TALIB R,SELAMAT M,et al.Effect of copper on friction and wear properties on copper-based friction materials[J].Proceedings of Asia International Conference on Tribology 2018:Malaysian Tribology Society,2018:469-470.
[5]XU E,HUANG J,LI Y,et al.Graphite cluster/copper-based powder metallurgy composite for pantograph slider with well-behaved mechanical and wear performance[].Powder Technology,2019,334(15):551-560.
[6]SU L,GAO F,HAN X,et al.Tribological behavior of copper-graphite powder third body on copper-based friction materials[J].Tribology Letters,2015,60(2):30-39.
[7]XIAO X,YIN Y,BAO J,et al.Review on the friction and wear of brake materials[J].Advances in Mechanical Engineering.2016,8(5):1-10.
[8]AHMAD T,RAZA S,KAMRAN M,et al.Studying the effect of variation in volume fractions of carbon fibres on mechanical and electrical properties of copper based composites[J].Journal of Fundamental and Applied Sciences,2018,10(2):23-35.
[9]NOMURA S,AKIZUKI M,KANEMITSU H.Swash plate of swash-plate type compressor[S].Google Patents,2016.
[10]MOGHADAM A,OMRANI E,MENEZES P,et al.Mechanical and tribological properties of self-lubricating metal matrix nanocomposites reinforced by carbon nanotubes(CNTs)and grapheme-a review[J].Composites Part B:Engineering.2015,77:402-420.
[11]KOTI V,GEORGE R,KOPPAD P G,et al.Friction and wear characteristics of copper nanocomposites reinforced with uncoated and nickel coated carbon nanotubes[J].Materials Research Express,2018,5(9):590-607.
[12]MALLIKARJUNA H,RAMESH C,KOPPAD P,et al.Nanoindentation and wear behaviour of copper based hybrid composites reinforced with SiC and MWCNTs synthesized by spark plasma sintering[J].Vacuum,2017,145:320-333.
[13]LI J,ZHANG L,XIAO J,ZHOU K.Sliding wear behavior of copper-based composites reinforced with graphene nanosheets and graphite[J].Transactions of Nonferrous Metals Society of China,2015,25(10):3354-3362.
[14]严深浪,张兆森,宋招权,等.含炭纤维湿式铜基摩擦材料的性能[J].粉末冶金材料科学与工程.2010,15(2):186-190.YAN lianglang,ZHANG zhaosen,SONG zhaoquan,et al.Properties of carbon-containing fiber wet copper-based friction materials[J].Powder Metallurgy Materials Science and Engineering,2010,15(2):186-190.
[15]蒋世文,张兆森,严深浪,等.孔隙度对湿式铜基摩擦材料摩擦磨损性能的影响[J].粉末冶金材料科学与工程,2012,17(1):109-114.JIANG Shiwen,ZHANG Zhaosen,YAN Shenlang,et al.Effect of porosity on friction and wear properties of wet copper-based friction materials[J].Powder Metallurgy Materials Science and Engineering,2012,17(1):109-114.
[16]谭慧强,姚萍屏,赵林,等.湿式铜基摩擦材料的磨损图研究[J].粉末冶金材料科学与工程,2013,18(6):796-800.TAN Huiqiang,YAO Pingping,ZHAO Lin,et al.Wear pattern study of wet copper-based friction materials[J].Powder Metallurgy Materials Science and Engineering,2013,18(6):796-800.
[17]RAJA P,RAMKUMAR P.Tribological effects of multiwall carbon nanotube(MWCNT)on Cu Based Hybrid Composite Brake Friction Material for Medium Duty Automotive Applications[J].SAE Technical Paper,2018.Report No.0148-7191.
[18]LA FOREST M L,BEHNKE M E,MURDIE N,et al.High density carbon-carbon friction materials[J].Google Patents,2017.
[19]GB/T10425-2002,烧结金属摩擦材料表观硬度的测定[S].北京:中国标准出版社,2002.GB/T10425-2002,Determination of apparent hardness of sintered metal friction materials[S].Beijing:China Standard Press,2002.
[20]GB/T5163-2006,烧结金属材料(不含硬质合金)可渗透烧结金属材料密度、含油率和开孔率的测定[S].北京:中国标准出版社,2006.GB/T5163-2006,Sintered metal materials(without hard alloys)permeable sintered metal materials Determination of density,oil content and open porosity[S].Beijing:China Standard Press,2006.
[21]GB/T10424-2002,烧结金属摩擦材料压缩强度的测定[S].北京:中国标准出版社,2002.GB/T10424-2002.Sintered metal friction material Determination of compressive strength[S].Beijing:China Standard Press,2002.
[22]崔小浩,李生华,宋怀河,等.中间相碳微球摩擦性能研究[J].摩擦学学报,2002,22(4):258-262.CUI Xiaohao,LI Shenghua,SONG Huaihe,et al.Study on the friction properties of mesophase carbon microspheres[J].Tribology,2002,22(4):258-262.
[23]温诗铸.摩擦学原理[M].北京:清华大学出版社,2012:228-234.WEN Shizhu.Principles of Tribology[M].Beijing:Tsinghua University Press,2012:228-234.