Abstract:Structure, strength and electrical conductivity of Cu-Ta vacuum condensates with a tantalum concentration from 0.1 to 3 at % is studied. Depending on the content of tantalum, the condensates have different structural states: one-and two-phase, supersaturated tantalum solution in FCC copper lattice. Alloying of copper condensates with tantalum reduces the grain size from ~ 3 m to ~ 50 nm. The optimum ratio of strength properties and electrical conductivity is realized at a tantalum content of ~ 0.4-0.5 at. %. … Show more
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