Study on Thermal Stability of Dendritic Silver-Coated Copper Powders Fabricated by Galvanic Displacement Reaction
In structural perspective, the dendritic structure has many superior properties, such as large surface area and good conductivity. Therefore, it is commendable to explore the mechanism of dendritic copper metallic materials formation.
In this presentation, we are reporting a simple fabrication method for copper powder and silver coated copper powder with dendritic morphology at low temperature. To improve the dendritic structure, the galvanic displacement reaction and hydrogen evolution reactions have been applied together. The formation mechanism of Cu dendritic structures on the basis of effect of concentration, termination time, anion concentration, and additives have been prudently analyzed. In addition, we have also analyzed the thermal stability of silver-coated copper powders performance at different temperature.
Figure 1. SEM images of (a) dendritic copper powders and (b) cross section of silver-coated copper powders fabricated by galvanic displacement reaction.
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