Pb-Al复合电极材料制备技术及性能的研究

【作者】 黄子良；

【导师】 竺培显；

【作者基本信息】 昆明理工大学 ， 材料学， 2009， 硕士

【摘要】 铅及铅合金被湿法冶金工业用来做电积铜、电积锌的不溶性阳极材料和作为铅蓄电池中的板栅材料,但其存在着机械强度低、抗蠕变性差、内阻大、质量大等缺陷。本文在Al与Pb之间引入第三组元金属,解决了Al、Pb的相容性问题,采用热浸渡和浇铸相结合的制备方法,制备出新型的铝-铅层状复合电极材料。利用扫描电子显微镜、万能材料测试机、电化学工作站等分析测试手段,对铝-铅复合材料的性能与界面进行分析,研究中间过渡层对铝-铅复合材料界面、性能的影响,结合力学性能和电化学性能测试,探索其作为电极材料应用的可行性和优势。参阅相关文献,制定铝-铅复合材料的制备工艺,通过实验确定具体的工艺参数,并制备出三种不同界面结合方式的铝-铅复合材料。深入研究铝-铅复合材料的界面微观结构和物理性能,并应用人工神经网络技术建立起了铝-铅复合材料界面强度与第三组元过渡金属配比、热浸渡温度、热浸渡时间之间的关系,对界面结合力进行分析以得出最佳工艺方案。研究结果表明,铝-铅层状复合电极材料与传统铅电极相对比,具有较强耐电化学腐蚀能力,内阻低,能耗低,抗弯性能好。当引入Sn或Bi作为第三组元金属,可在铝-铅界面可形成冶金式结合,使力学性能和电化学性能得到提高。通过人工神经网络技术建立起铝-铅复合材料界面与影响因素之间的关系模型,从而得出当第三组元金属为Sn,热浸渡温度为328℃,热浸渡时间为2min时,可制备出界面结合相对较好的铝-铅层状复合材料,此时的界面剪切力强度可达7.7304。纵观全文,本文的研究在综述前人工作的基础上,研究了非混溶体系的制备工艺和界面结构,并为新型能源材料的研发提供了新的思路与参考。更多还原

【Abstract】 Lead and lead alloys were used for hydrometallurgical industrial electrowinning copper, zinc electrowinning anode insoluble materials and as a lead-acid batteries in the grid material, but there have the defect of low mechanical strength, poor creep resistance, large resistance, the heavy quality and so on. Based on introducing the third group metal between Al and Pb, solve the compatibility between Al and Pb,prepared Al-Pb composite material by the hot dipping and appends an the casting. The interfacial organization and microstructures of Al-Pb alloys had been investigated by SEM, The multi-purpose materials measure the testing and the electrochemistry workstation, study for the influences on Al-Pb composite material’s interface by interim transition-layer. By electrochemistry experiments and mechanical experiments, the feasibility and advantages of apply Al-Pb composite material to Electrode material has been verified.On basis of the related documents, technological process and parameter has been redefined by tests. And manufacture three kinds of Al-Pb compsite material, which have diffenernt interfacial structure. This paper mostly study for micstructures of interface and physical properties of Al-Pb compsite material. Application of artificial neural network technology to build the relationship between the aluminum-lead composite interface strength with the third element of transition metal ratio, hot-dip transition temperature and hot-dip crossing time, On an analysis of the interface bonding process to produce the best program in order to arrive at the best Technology program.It was found that, Al-Pb composite material has a better corrosion-resistance and a low internal resistance, and a low energy consumption, and a good mechanical properties. The experimental results show that, when the introduction of Sn or Bi as the third element of metal, aluminum and lead can be to the formation of interface-type metallurgical combine, so that the mechanical properties and improved electrochemical properties, and Bi, Sn into the situation in different proportions under different performance reflected by the establishment of artificial neural network model obtained when the third element of metal is Sn, hot dip transition temperature is 328℃, hot-dip time is 2 minutes, can be relatively well prepared aluminum laminated composite lead, which has Interface shear force of 7.7304 strength. In sum, on basis of the related documents, the processing of Al-Pb composite material and micstructures of interface had been discussed. Moreover this study provided us a new choice and reference for power material and new grid material to Lead-acid Battery.更多还原