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Interface structure and strengthening behavior of graphene/CuCr composites
Open accessAbstract
Abstract The strong interface is an essential requirement to ensure the effective load transfer of graphene/Cu composites. Here we attempted to improve the interface adhesion and mechanical properties of reduced graphene oxide (RGO)/CuCr composites by matrix-alloying with ∼0.2 at.% Cr. It was found that a trace amount of Cr7C3 layers/nanoparticles was in-situ formed at the RGO-CuCr interface, which contributed to the dramatically improved interfacial bonding of the composites. The 2.5 vol% RGO/CuCr composite exhibited a tensile strength of 352 MPa, 82% and 19% higher than that of unreinforced CuCr and 2.5 vol% RGO/Cu composite without Cr alloying, respectively. The enhanced strength of RGO/CuCr composite was ascribed to the dual role of Cr7C3 layers/nanoparticles that not only enhanced the load transfer efficiency, but also promoted the dislocation strengthening ability of RGO itself. Furthermore, we proposed the possible Cr7C3 formation/evolution mechanism that involved the four steps of amorphous carbon formation, Cr7C3 nucleation in amorphous carbon, Cr7C3 growth and Cr7C3 coalescence. The formation of medium sized Cr7C3 layers/nanoparticles at 1053 K resulted in the highest strength of RGO/CuCr composite with a satisfactory strength-ductility combination. This study provides new insights into the interface structure, strengthening mechanism and carbide formation/evolution mechanism of graphene/CuX composites.
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Wang, H., Maiyalagan, T., & Wang, X. (2012) · ACS Catalysis · doi:10.1021/cs200652y · Cited by 3,618
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Cited by
Chu, K., Liu, Y.-P., Li, Y.-B., Guo, Y.-L., & Tian, Y. (2020) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.9b18263 · Cited by 331
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Metadata
- Authors
- Chu, K., Wang, F., Li, Y.-B., Wang, X.-H., Huang, D.-J., & Zhang, H.
- Venue
- Carbon
- Publisher
- Elsevier BV
- Published
- 2018-07
- Volume
- 133
- Pages
- 127-139
- ISSN
- 0008-6223 (ISSN-L)
- OpenAlex
- W2791799036
- Cited by
- 250
- References
- 1
- FWCI
- 18.39
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Chu, K., Wang, F., Li, Y.-B., Wang, X.-H., Huang, D.-J., & Zhang, H. (2018). Interface structure and strengthening behavior of graphene/CuCr composites. Carbon. https://doi.org/10.1016/j.carbon.2018.03.018
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