Interfacial characteristics, electrical conductivity, mechanical performance, and tribology behavior of ZrB2/Cu composites
The inferior anti-wear properties limited the service life and stability of the Cu materials in mechanical-electronic engineering fields. The ZrB2/Cu composites were prepared to optimize tribological and electrical properties based on the high hardness and low electrical resistance of ZrB2 ceramics....
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-08-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525007865 |
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| Summary: | The inferior anti-wear properties limited the service life and stability of the Cu materials in mechanical-electronic engineering fields. The ZrB2/Cu composites were prepared to optimize tribological and electrical properties based on the high hardness and low electrical resistance of ZrB2 ceramics. Introducing ZrB2 micro/nanoparticles significantly improved the Cu matrix’s hardness without severely reducing its electrical conductivity. Therefore, the electrical conductivity and hardness of the Cu-20 wt%ZrB2 composite were 20.18 %IACS and 231.64 HV, respectively. The compression strength of composites first improved and then decreased with the ZrB2 content. The lubrication characteristics offered by the continuous tribo-layer and the support effects of ZrB2 micro/nanoparticles were the primary reasons for enhancing friction reduction and anti-wear properties in Cu matrix composites. This work provided a theoretical foundation for the structural design of Cu-based composites with desirable electrical conductivity and wear resistance. |
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| ISSN: | 0264-1275 |