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- W2968190745 endingPage "121990" @default.
- W2968190745 startingPage "121990" @default.
- W2968190745 abstract "Surface treatment of graphite by silver is applied to modify microstructure and mechanical properties of Cu-Ni-graphite composites. In this study, flake graphite is used to create silver-coated graphite by Tollens' reagent, and the silver-modified Cu-Ni-graphite composite is prepared by powder metallurgy. The microstructure characterization and modification mechanism of the composite are the emphases of this investigation. The results showed that the silver coating is composed of a pure silver phase with a rough and granular surface and the thickness of the layer is about 1.52 μm. The composite consists of graphite, an α-Cu phase and a silver phase. The silver phase in graphite exists as silver nanowires and nanoparticles, and a silver precipitate phase is generated in the matrix. At the interface of the composite, silver nanowires and α-Cu phase is generated in the frontier of the matrix and the graphite. These silver nanowires and the α-Cu phase that joint the interface can efficiently enhance the interface strength and dramatically improves mechanical properties. Through the silver modification process of the composite, hardness increases by approximately 49.9%, the improvement of relative density is increased by approximately 2.1%. Additionally, the flexural strength increases by approximately 187.8% compared with the composites without modification." @default.
- W2968190745 created "2019-08-22" @default.
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- W2968190745 date "2020-01-01" @default.
- W2968190745 modified "2023-10-16" @default.
- W2968190745 title "Investigation of modification of Cu-Ni-graphite composite by silver" @default.
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- W2968190745 doi "https://doi.org/10.1016/j.matchemphys.2019.121990" @default.
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