In the preparation of Ag Pd powders by coprecipitation from a reducing solution, the addition of ammonium acetate as a buffer in a reacting solution using ammonium formate and hydrazine as a reducing agent gave powders which can be changed to alloy at lower temperature. In this paper, the study of the relation between homogeneity of Ag/Pd composite powders and temperature changing to alloy is reported.
Under the reacting condition, by addition of ammonium acetate in reacting solution, using ammonium formate and hydrazine as a reducing agent, the contact of Ag and Pd is close. As a result, homogeneous Ag/Pd composite powders produced were changed to alloy easily by the heat treatment.
