Abstract
A copper matrix composite reinforced by in situ TiB 2 nanoparticle was prepared by reactions of B 2O 3, carbon and titanium in copper–titanium melt. The microstructure and mechanical and electrical properties of the as-drawn in situ composite were investigated. The results showed that the in situ-formed TiB 2 particles, which had a size of about 50 nm, exhibited a homogenous dispersion in the copper matrix. Due to their reinforcement, the tensile strength and hardness of the in situ Cu–TiB 2 composite significantly improved. Moreover, the as-drawn in situ composite had a high electrical conductivity.
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