SiO_2–B_2O_3–Al_2O_3助焊剂对粉末烧结Cu–C–SnO_2多孔材料组织与性能的影响
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摘要
采用常压烧结法制备了铜–石墨–氧化锡(Cu–C–SnO_2)复合多孔材料,对其物相组成和物理性能进行了分析测试,研究了SiO_2–B_2O_3–Al_2O_3系助焊剂对Cu–C–SnO_2多孔材料组织和性能的影响。结果表明,加入适量助焊剂有助于铜–石墨–氧化锡混合粉体烧结;助焊剂加入量(质量分数)在5%以下时,铜–石墨–氧化锡粉末烧结体的透气性和硬度随着助焊剂质量分数的增加而降低,粉末烧结体的导电性和烧结收缩率随着助焊剂质量分数的增加而升高;在730～770℃烧结,烧结温度对铜–石墨–氧化锡混合粉体的烧结工艺特性和烧结体性能影响不大。
Cu–C–SnO_2 composite porous materials with different addition contents of SiO_2–B_2O_3–Al_2O_3 scaling powder by mass were prepared by pressureless sintering, the phase composition and physical properties of Cu–C–SnO_2 porous materials were analyzed and tested, and the effects of scaling powder contents on the microstructures and properties of Cu–C–SnO_2 porous composites were investigated. The results show that, the suitable content of scaling powder is conducive to the sintering of Cu–C–SnO_2 mixture powders. When the scaling powder content is not excess 5% by mass, the gas permeability and hardness of the sintered compact decrease with the increase in scaling powder content, but the electroconductibility and sintering shrinkage increase as the scaling powder content increases. Meanwhile, the sintering temperature has little influence on the sintering performance of Cu–C–SnO_2 mixture powders and the properties of sintered compact at the range of 730～770 ℃.
Cu–C–SnO_2 composite porous materials with different addition contents of SiO_2–B_2O_3–Al_2O_3 scaling powder by mass were prepared by pressureless sintering, the phase composition and physical properties of Cu–C–SnO_2 porous materials were analyzed and tested, and the effects of scaling powder contents on the microstructures and properties of Cu–C–SnO_2 porous composites were investigated. The results show that, the suitable content of scaling powder is conducive to the sintering of Cu–C–SnO_2 mixture powders. When the scaling powder content is not excess 5% by mass, the gas permeability and hardness of the sintered compact decrease with the increase in scaling powder content, but the electroconductibility and sintering shrinkage increase as the scaling powder content increases. Meanwhile, the sintering temperature has little influence on the sintering performance of Cu–C–SnO_2 mixture powders and the properties of sintered compact at the range of 730～770 ℃.
引文
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[3]Lin X Y,Liu R T,Xiong X,et al.Effects of graphite granularity and pitch binder on properties of copper-graphite brush.Chin J Nonferrous Met,2017,27(7):1411(林雪杨,刘如铁,熊翔,等.石墨粒度及沥青黏结剂对铜-石墨电刷材料性能的影响.中国有色金属学报,2017,27(7):1411)
[4]Zhang Q Z,Li Q,Wang A X,et al.Recent development in copper-graphite self-lubrication contact materials.Mater Rev,2005,19(2):43(张钦钊,李强,王爱香,等.铜-石墨自润滑触头材料的研究进展.材料导报,2005,19(2):43)
[5]Zhu C C,Zhang P,Du Y H,et al.Copper-grapllite pantograph slide plate with superexcellent perfomance.Railway Locomot Car,2006,26(3):62(朱成才,张鹏,杜云慧,等.性能卓越的铜石墨受电弓滑板.铁道机车车辆,2006,26(3):62)
[6]Howard I S,Leander F P.Evaluation of global PMoil-impregnated bearings.Transl by Han F L.Powder Metall Technol,2008,26(1):65(Howard I S,Leander F P.全球烧结金属含油轴承评定.韩凤麟译.粉末冶金技术,2008,26(1):65)
[7]Liao D H,Li C S,Tang H,et al.Tribological property improvement of copper-graphite composites by adding Nb Se2.Chin J Vac Sci Technol,2011,3l(6):748(廖东侯,李长生,唐华,等.一种新的自润滑铜-石墨-Nb Se2复合材料的合成及摩擦性能研究.真空科学与技术学报,2011,3l(6):748)
[8]Qian G,Feng Y,Chen Y M,et al.Effect of WS2 addition on electrical sliding wear behaviors of Cu-graphite-WS2composites.Trans Nonferrous Met Soc China,2015,25(6):1986
[9]Li J F,Zhang L,Xiao J K,et al.Sliding wear behavior of copper-based composites reinforced with graphene nanosheets and graphite.Trans Nonferrous Met Soc China,2015,25(10):3354
[10]Liu R T,Xiong X,Chen F S,et al.Micro-tribological characteristics of bronze-steel bimetal containing graphite.Powder Metall Technol,2010,28(5):331(刘如铁,熊翔,陈福胜,等.含石墨的青铜-钢背双金属材料的微摩擦学特征.粉末冶金技术,2010,28(5):331)
[11]Zhang G X.Effects of copper-coated graphite content and particle size on properties of the Cu/copper-coated graphite composite.Powder Metall Technol,2016,34(3):196(张国玺.石墨含量及粒度对铜-镀铜石墨复合材料性能的影响.粉末冶金技术,2016,34(3):196)
[12]Fu P,He G Q.Research progress of Cu-C current collector shoe materials.Met Funct Mater,2010,17(1):76(付沛,何国球.铜石墨受电靴材料研究进展.金属功能材料,2010,17(1):76)
[13]Couillaud S,Lu Y F,Silvain J F.Thermal conductivity improvement of copper-carbon fiber composite by addition of an insulator:calcium hydroxide.J Mater Sci,2014,49(16):5537
[14]Williams E W,Keeling A G.Thick film tin oxide sensors for detecting carbon monoxide at room temperature.JMater Sci Mater Electron,1998,9(1):51
[15]Zhou Y T,Yang X L,Huang C,et al.Synthesis and electrochemical properties of SnO2/graphite composite anode materials.Power Source Technol,2014,38(6):1045(周永涛,杨学林,黄晨,等.二氧化锡/石墨复合负极材料制备与电化学性能.电源技术,2014,38(6):1045)
[16]Bai X J,Hou M,Liu C,et al.3D SnO2/graphene hydrogel anode material for lithium-ion battery.Acta Phys Chim Sin,2017,33(2):377(白雪君,侯敏,刘婵,等.锂离子电池用三维氧化锡/石墨烯水凝胶负极材料.物理化学学报,2017,33(2):377)
[17]Luo B M,Li F F,Jiang T T,et al.Synthesis of Pt/Sn O2/graphene composite catalyst and its electro-catalytic properties to methanol oxidation.Guangdong Chem Ind,2017,44(11):51(罗保民,李芬芬,蒋婷婷,等.铂/二氧化锡/石墨烯复合催化剂的制备及其催化甲醇氧化性能.广东化工,2017,44(11):51)
[18]Liang J Z,Yang Q Q.Predication of percolation threshold of conductive polymer composites.J S China Univ Technol,2007,35(8):80(梁基照,杨铨铨.导电高分子复合材料逾渗阈值的预测.华南理工大学学报,2007,35(8):80)