【摘要】 用电沉积法从氯化物-硫酸盐混合体系镀液中在08F钢上制取了304不锈钢型Fe-Cr-Ni合金镀层;讨论了镀液成份,添加剂,pH值,电流蜜度和镀液温度对镀层成份及性能的影响。研究结果表明,在常温、低pH及适当的电流密度下,镀液中的Cr³⁺和Ni²⁺含量比值达到3.1时,可以获得成份与18-8不锈钢相似的,具有铁素体结构的铁铬镍合金镀层。这种镀层结合力好,耐腐蚀。更多还原

【Abstract】 An Fe-Cr-Ni ternary alloy coating of type 304 stainless steel could be electrodeposited on mild steel from a bath containing chloride and sulphate of these metals with TJ additive （C₆H₄COSO₂NH） and boric acid. The effects of the bath composition,TJ additive ,pH,current density and temperature on the composition of the coating formed were discussed. The results indicated that when the Cr³⁺/Ni²⁺ ratio in the bath was adjusted to 3. 5,an Fe-Cr-Ni alloy coating with the composition approximate to that of type 304 stainless steel could be obtained at temperature of 303-308 K,pH 1.5-1.7 and current density of 15A/dm². The electreodeposited coating which exhibited high corrosion resistance and adhesion consisted of 68. 5-71.4%Fe, 17.2-21.7%Cr and 9. 8-11.4%Ni,and it did constitute an alpha solid solution.更多还原