High Oxidation Resistance of CVD Graphene-Reinforced Copper Matrix Composites.
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ID: 54832
2019
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Abstract
Copper-based materials are common industrial products which have been broadly applied to the fields of powder metallurgy, electrical contact, and heat exchangers, etc. However, the ease of surface oxidation limits the durability and effectiveness of copper-based components. Here, we have developed a powder metallurgy process to fabricate graphene/copper composites using copper powders which were first deposited with graphene layers by thermal chemical vapor deposition (CVD). The graphene/copper composites embedded with an interconnected graphene network was then able to be obtained by vacuum hot-pressing. After thermal oxidation (up to 220 °C) in humid air for several hours, we found that the degree of surface oxidation of our samples was much less than that of their pure Cu counterpart and our samples produced a much smaller increase of interfacial contact resistance when used as electrical contact materials. As a result, our graphene/copper composites showed a significant enhancement of oxidation resistance ability (≈5.6 times) compared to their pure Cu counterpart, thus offering potential applications as novel electrical contact materials.
| Reference Key |
wu2019highnanomaterials
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| Authors | Wu, Mingliang;Hou, Baosen;Shu, Shengcheng;Li, Ao;Geng, Qi;Li, He;Shi, Yumeng;Yang, Minghui;Du, Shiyu;Wang, Jun-Qiang;Liao, Shuzhi;Jiang, Nan;Dai, Dan;Lin, Cheng-Te; |
| Journal | Nanomaterials |
| Year | 2019 |
| DOI |
E498
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