Abstract
Abstract Cold-sprayed copper coatings tend to be brittle and their electrical conductivity is inferior to that of the bulk material. In order to solve these problems, conventionally, it has been attempted to recover the metallic structure by heat treatment. This study, however, focuses on the effects of phosphorus and tin with the aim of improving cold spray copper coatings by optimizing the impurity content of Cu powder. It is shown that, by adjusting the content of P and Sn, dense copper coatings can be obtained with high ductility and electrical conductivity equal to that of the bulk material.
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