Abstract
The Ag coating was deposited on the surface of Al-Ag alloy powder by electroless plating process. 10 wt% of AgNO3 was put in the powder for precursor replacement reaction, and then added the powder into electroless plating bath which contained glucose solution, solution of silver ammonia, thiourea solution, tartaric acid solution and absolute ethanol. The effects of formula components were analyzed. The surface morphology of the prepared composite particles was studied with SEM and their chemical compositions were confirmed by XRD. With the chemical etching method, silver content of the powder was determined. The studies have shown that an uniform, complete and dense silver coating for the Al-Ag composite powders was generated by this method, with the silver content being 20wt%, and the conductivity was favorable.
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