摘要
以聚氨酯泡沫为基体,通过化学镀镍、电沉积Fe-Cr合金和烧结处理等工艺制备了Fe-Cr-Ni三元泡沫合金,研究了其制备工艺条件,尤其是电流密度、Cr3+浓度与Fe2+浓度的比值和镀液pH值等对镀层质量和三元泡沫合金中铬元素含量的影响,得到在聚氨酯泡沫上电沉积Fe-Cr合金的最佳工艺为:pH=2～3,c(Cr3+)/c(Fe2+)=10～12,电流密度15～22A/dm2,搅拌。用X射线荧光探针(XRF)对用最佳工艺下制备的三元泡沫合金的化学成分进行了测试,测得其中Cr在18%～20%之间,Ni在8%～10%之间,Fe在70%～74%之间,其成分与18-8不锈钢很接近。
Fe-Cr-Ni foamed- alloy was prepared with polyurethane sponge as substrate by a series of processes of elec-troless Ni plating, Fe-Cr alloy electrodeposition, and sintering. The effects of process conditions especially the current density, the [Cr3+]/[Fe2+] and pH value in the bath on the film quality and the composition of Cr in the film were investigated. The optimized processes of Fe-Cr alloy electrodeposition were obtained. The prepared foamed - alloy was analyzed by X - ray fluorescence (XRF) , which was composed of 18% - 20% Cr,8% - 10% Ni and 70% - 74% Fe, and it approached to that of 18-8 type stainless steel.
出处
《材料保护》
CAS
CSCD
北大核心
2007年第11期24-26,共3页
Materials Protection
