Preparation of Core-shell Cu-Ag Bimetallic Powder via Electroless Coating

武汉理工大学学报-材料科学版(英文版), 2009, 24(4): 637-639. doi: 10.1007/s11595-009-4637-0

^1, , ^2, , ^3,

1.College of Metallurgy Science and Engineering, Central South University, Changsha 410083, China;College of Chemical and Pharmaceutical Engineering, Henan Universityof Science and Technology, Luoyang 471003, China

2.College of Metallurgy Science and Engineering, Central South University, Changsha 410083, China

3.College of Metallurgy Science and Engineering, Central South University, Changsha 410083, China

基金项目: the National Natural Science Foundation of China(50474047)

Preparation of Core-shell Cu-Ag Bimetallic Powder via Electroless Coating

XU Rui ^1, , ZHOU Kanggen ^2, , HU Minyi ^3,

2.College of Metallurgy Science and Engineering, Central South University, Changsha 410083, China

3.College of Metallurgy Science and Engineering, Central South University, Changsha 410083, China

Keywords： core-shell

A novel method of electroless silver coating on copper powders was reported,in which hydrazine was used as the reducing agent,and had some advantages such was used as inhib-iting the substitution reaction and reducing consumption of copper powders.In the processes of sen-sitization and activation,AgNO_3 replaces the conventional PdCl_2,which solves the impurity of bath.Oxide film on the surface of copper powders was tested by chemical analysis.Ag element tested by XRD and XRF is in the form of Ag~0 and exists on the surface of copper powders,which acts as catalyzer in reduction reaction.Morphology and composition of the coating were characterized by SEM and XRD respectively.

参考文献

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Preparation of Core-shell Cu-Ag Bimetallic Powder via Electroless Coating

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