利用化学还原法,以硼氢化钾为还原剂,制备了Ni3.1B非晶态纳米合金粉末,用于化学镀(Ni-P)-Ni3.1B合金镀层.通过对还原剂硼氢化钾、稳定剂硫脲和表面活性剂聚乙烯吡咯烷酮对Ni3.B纳米合金粉末的粒径的影响,确定化学还原法制备Ni3.1B的最佳条件为0.02 mol/L NiCl2 ·6H2O,0.06 g/L KBH4,2mg/L硫脲,0.25 g/L聚乙烯吡咯烷酮.通过对Ni3.1B粉体分散性和在化学镀Ni-P-B合金镀液中的稳定性的研究,发现海藻酸钠对Ni3.1B具有良好的包覆效果.
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