化学镀法制备Ni包覆ZrO2微粉,用分光光度法测定了镀液中的镍含量与时间的关系.得出NaF、表面活性剂对镀覆反应的影响,计算了镀覆反应的表现活化能.结果表明,镀覆后颗粒均由Ni和ZrO2两种成份复合而成,达到了均匀分散金属相和陶瓷相的目的;NaF和表面活性剂均能降低反应的表观活化能.
In the process of electroless plating used to Ni coated ZrO2 ultrafine powders, the relationship between Ni2+ concentration in solution
and time at different temperatures was determined. The effect of Ni2+ concentration, NaF and surfactants on the speed of Ni deposit was obtained.
Apparent activity energy was concluded. The goal that even mixing Ni with ZrO2 was attained. Experimental results show that
Ni is coated on ZrO2 powder surface and the speed of Ni deposit can be raised and apparent activity energy can be dropped by NaF and surfactants.
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