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选取Ⅰ(50%Pb-50%Sn)、Ⅱ(35%Pb-60%Sn-5%Zn)两种合金焊料,采用热浸镀的方法在钢表面覆镀媒介金属,用过渡液相扩散焊接技术将镀膜钢板与铅板进行焊合,制备铅/钢层状复合材料。借助SEM,XRD等手段对样品的界面形貌及生成相进行了测试,使用电化学工作站、四探针法等手段分别对试样的物理及化学性能进行了测试。结果表明:铅/钢层状复合材料的界面结合良好。与传统铅阳极样品比较,优化工艺参数制得的铅/钢层状复合阳极样品的电极电位分别负移120 mV和180 mV,催化活性明显提高。两种铅/钢层状复合材料电阻率下降了28%—40%。
Two kinds of alloy solders, Ⅰ (50% Pb-50% Sn) and Ⅱ (35% Pb-60% Sn-5% Zn), were selected and plated on the steel surface by hot- Welding technology will be coated steel and lead plate welding, preparation of lead / steel layered composite material. The morphology and phase of the samples were tested by means of SEM and XRD. The physical and chemical properties of the samples were tested by electrochemical workstation and four-probe method respectively. The results show that the interface between lead and steel laminates is well bonded. Compared with the traditional lead anode samples, the electrode potentials of the lead / steel layered composite anode samples prepared by optimizing the process parameters were negatively shifted by 120 mV and 180 mV respectively, and the catalytic activity was significantly increased. The resistivity of both lead / steel laminates decreased by 28% -40%.