Abstract
Tungsten nanoparticle-strengthened Cu composites were prepared from nanopowder synthesized by a sol-gel method and in-situ hydrogen reduction. The tungsten particles in the Cu matrix were well-dispersed with an average size of approximately 100–200 nm. The addition of nanosized W particles remarkably improves the mechanical properties, while the electrical conductivity did not substantially decrease. The Cu-W composite with 6wt% W has the most comprehensive properties with an ultimate strength of 310 MPa, yield strength of 238 MPa, hardness of HV 108 and electrical conductivity of 90% IACS. The enhanced mechanical property and only a small loss of electrical conductivity demonstrate the potential of this new strategy to prepare W nanoparticle-strengthened Cu composites.
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This work was supported by the Fundamental Research Funds for the Central Universities (No. FRF-TP-18-029A2) and State Key Lab of Advanced Metals and Materials of China (No. 2019-Z10).
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Lu, Tx., Chen, Cg., Guo, Zm. et al. Tungsten nanoparticle-strengthened copper composite prepared by a sol-gel method and in-situ reaction. Int J Miner Metall Mater 26, 1477–1483 (2019). https://doi.org/10.1007/s12613-019-1889-3
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DOI: https://doi.org/10.1007/s12613-019-1889-3