Abstract

The mechanical properties (i.e., tensile and shear properties) of vacuum plasma spray copper deposits presenting different porosity levels were determined. The tensile properties of the copper plasma spray deposit appeared to strongly depend on the porosity level, but whatever was the porosity level of the sample, the fracture always exhibited a ductile character, with the failure cups expanding preferentially on the pores and secondarily on the grain boundaries of the annealed microstructures. The tests clearly shown that the material presented an isotropic ductile-plastic hardening behavior typical of copper based materials, but this behavior being significantly influenced by the porosity level of the deposit.

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