银对Bi1.6Pb0.4Sr2Ca2Cu3Ox超导材料摩擦学性能的影响
Effect of Ag on Tribological Properties of Bi1.6Pb0.4Sr2Ca2Cu3Ox Superconducting Materials
摘 要
通过高温固相反应法制备了不同银含量的Ag/Bi1.6Pb0.4Sr2Ca2Cu3Ox超导材料,用XRD和SEM分析了其物相组成及显微结构;用销-盘式摩擦试验机研究了该材料从低温到常温的摩擦学性能.结果表明:Ag/Bi1.6Pb0.4Sr2Ca2Cu3Ox材料由超导相和银相组成;温度从室温降低到超导转变温度以下时,其摩擦因数明显降低,在非超导态时摩擦因数为0.4,达到超导转变温度时摩擦因数为0.2;加入银后其摩擦因数随载荷和滑动速度的提高而增大;银含量对其摩擦因数的影响规律不明显;加入银后可提高其减摩耐磨性能.
摩擦学性能
超导转变温度
Ag/Bi1.6Pb0.4Sr2Ca2Cu3Ox
tribological property
superconductig transition temperature
Abstract
Superconducting composites Ag/Bi1.6Pb0.4Sr2Ca2Cu3Ox with different contents of silver were successfully synthesized by high-temperature solid-state reaction method.The microstructure and phase composition of the as-synthesized samples were characterized by XRD and SEM.The tribological properties from ultra-low temperature to room temperature of the materials were studied by pin-on-disk friction testing.The results indicate that Ag/Bi1.6Pb0.4Sr2Ca2Cu3Ox materials were composed of superconductor phase and Ag phase.The friction coefficient of the samples decreased obviously when the temperature was lowered to less than the superconducting transition temperature.The friction coefficient was 0.4 in non-superconducting state.At superconducting transition temperature,the friction coefficient was 0.2.The friction coefficient of the material with addition of Ag increased with the increase of load and sliding speed.The influence law of Ag content on the friction coefficient was not significant.The properties of antifriction and wear resistance were improved after Ag addition.
中图分类号 TB33
所属栏目 材料性能及其应用
基金项目 国家自然科学基金资助项目(S0372026)
收稿日期 2008/12/30
修改稿日期 2009/9/21
网络出版日期
作者单位点击查看
备注彭义(1984-),男,湖南长沙人,硕士研究生.
引用该论文: PENG Yi,LI Chang-sheng,WANG Min-lu,DING Jian,ZHU Bing-ying. Effect of Ag on Tribological Properties of Bi1.6Pb0.4Sr2Ca2Cu3Ox Superconducting Materials[J]. Materials for mechancial engineering, 2010, 34(1): 80～83
彭义,李长生,王旻璐,丁建,朱秉莹. 银对Bi1.6Pb0.4Sr2Ca2Cu3Ox超导材料摩擦学性能的影响[J]. 机械工程材料, 2010, 34(1): 80～83
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参考文献
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【2】WIDOM A,KRIM J.Q factors of quartz oscillator modes as a probe of submonolayer-film dynamics[J].Physical Review B,1986,34:1403-1403.
【3】KRIM J,WIDOM A.Damping of a crystal oscillator by an adsorbed monolayer and its relation to interfacial viscosity[J].Physical Review B,1988,38:12184-12189.
【4】KRIM J.Atomic-scale origins of friction[J].Langmuir,1996,12:4564-4566.
【5】MASON B L,WINDER S M,KRIM J.On the current status of quartz crystal microbalance studies of superconductivity-dependent sliding friction[J].Tribology Letters,2001,10(1/2):59-65.
【6】TORRES E,GONCALVES S.Nanoscale sliding friction versus commensuration tatio:Molecular dynamics simulations[J].Physical Review B,2006,73(3):1-8.
【7】DING Qiao-dang,LI Chang-sheng,DONG Li-rong,et al.Preparation and properties of YBa2Cu3O7-δ/Ag self-lubricating composites[J].Wear,2008,265(7/8):1136-1141.
【8】姜春华,李长生.镍-铬基自润滑复合材料的制备及性能[J].机械工程材料,2007,31(4):48-51.
【9】董丽荣,李长生.超导体YBa2Cu3O7-δ 的摩擦学特性研究[J].摩擦学学报,2008,28(4):245-350.
【10】董丽荣,李长生.超导Pb/YBa2Cu3O7-δ 复合氧化物摩擦磨损性能[J].复合材料学报,2008,25(4):143-148.
【11】BEN A F,CHIRGUI A M.Synthesis,microstructural evolution and the role of substantial addition of PbO during the final processing of (Bi,Pb)-2223 superconductors[J].Physica C,2001,356(1/2):83-96.
【12】MARINKOVIC B A,JARDIM P M.Characterization and phase transitions of (Bi,Pb)2Sr2Ca2Cu3Ox-Ag composite powder obtained by spray pyrolysis[J].Materials Chemistry and Physics,2005,94(2/3):233-240.
【13】GUL I H,MIN F A.Effect of Ag2CO3 addition on the morphology and physical properties of Bi-based (2223) high-Tc superconductors[J].Physica C,2006,449(2):139-147.
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