Ultrahigh Oxidation Resistance and High Electrical Conductivity in Copper-Silver Powder.

ABSTRACT: The electrical conductivity of pure Cu powder is typically deteriorated at elevated temperatures due to the oxidation by forming non-conducting oxides on surface, while enhancing oxidation resistance via alloying is often accompanied by a drastic decline of electrical conductivity. Obtaining Cu powder with both a high electrical conductivity and a high oxidation resistance represents one of the key challenges in developing next-generation electrical transferring powder. Here, we fabricate a Cu-Ag powder with a continuous Ag network along grain boundaries of Cu particles and demonstrate that this new structure can inhibit the preferential oxidation in grain boundaries at elevated temperatures. As a result, the Cu-Ag powder displays considerably high electrical conductivity and high oxidatio

SUBMITTER: Li J 

PROVIDER: S-EPMC5177874 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature