酸浸处理废铁料及电沉积制备Fe_(50)Ni_(50)合金箔

Acid Leaching Scrap Iron and Prepared Fe_(50)Ni_(50) Alloy Foil by Electrodeposition

先对铁料废弃物进行酸浸处理，优化得到酸浸工艺参数为：硫酸浓度为30wt％，酸浸温度为70℃；再通过电化学沉积方法制备Fe50Ni50合金箔，研究电流密度、pH值、温度和对舍金箔组成的影响，得到最优电解液组成和工艺条件为：FeSO4·7H2080g·L^-1，NiSO4·6H2O120g·L，硼酸45g·L，柠檬酸三钠60g·L，抗坏血酸8g·L，糖精3g·L^-1，十二烷基硫酸钠0．2g．L^-1；电流密度16～17A·dm^-1，温度65℃，pH值2．2，电沉积时间60min，Fe-Ni合金箔舍Fe50±1％，厚度为50pm，厚度偏差小于8％，抗拉强度为550MPa，延伸率为30％．

The acid leaching process of scrap iron was investigated and the ferrous sulfate electrolyte with high concentration was prepared. The electrodeposited technique of the Fe-Ni alloy is studied. The optimum acid leaching conditions and the best compose of electrolyte and electrodeposited process conditions were obtained. The concentration of sulfuric acid solution is 30 wt%, the leaching temperature is 70℃, the electrodepositing Fe-Ni are： FeSO4-7H20 80 g·L^-1, NiSO4·6H2O 120g·L^-1, boric acid 45g·L^-1, citric acid sodium 60 g·L^-1, ascorbic acid 8g·L^-1, saccharin 3g·L^-1, sodium lauryl sulfate 0.2 g.L^-1, the temperature is of 65℃, current density is 16.5 A-dm-2 and pH is 2.2. The Fe-Ni alloy foil are： 50±1% Fe content in the foil, a thickness of about 50μm, 530 MPa anti-draught strength and 30% of outstretched coefficient.