Fabrication of graphene oxide-Ti3AlC2 synergistically reinforced copper matrix composites with enhanced tribological performance |
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| Affiliation: | 1. School of Materials Science and Engineering, Central South University, Changsha 410083, China;2. Key Laboratory for Nonferrous Materials Science and Engineering, Education Ministry, Central South University, Changsha 410083, China;3. Department of Materials Science and Manufacturing Technology, Chalmers University of Technology, Gothenburg 412 96, Sweden;1. Department of Strength and Fatigue of Materials and Structures, AGH University of Science and Technology, 30-059 Krakow, Poland;2. Institute of Metallurgy and Materials Science PAS, 30-059 Krakow, Poland;3. Department of Engineering and Machinery for Food Industry, Agriculture University in Krakow, 30-149 Krakow, Poland;1. MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Science, Xi''an Jiaotong University, Xi''an 710049, PR China;2. State Key Laboratory for Mechanical Behavior of Materials, Xi''an Jiaotong University, Xi''an 710049, PR China;1. Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, School of Materials Science and Engineering, Anhui University of Technology, Ma’anshan, Anhui, 243002, PR China;2. Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, PR China;3. Jiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, PR China;1. Innovation Research Team for Advanced Ceramics, Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China;2. Department of ATF R&D, China Nuclear Power Technology Research Institute, China General Nuclear Power Corporation (CGN), Shenzhen 518026, China |
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| Abstract: | Ceramic particles reinforced copper (Cu) matrix composites with good electrical conductivities, superior mechanical and tribological properties show great prospect in electrical contacts, thermal management and sliding bearing materials. A novel Cu matrix composite with low coefficient of friction (COF) and high wear resistance is rationally designed and prepared by hot-press sintering the core-shell structured Cu/graphene oxide (GO)/Cu composite powders and Cu decorated Ti3AlC2 particles to achieve homogenous dispersion of GO in the Cu matrix and good interfacial bonding of Cu matrix and GO and Ti3AlC2. Its tribological performance and corresponding anti-wear alongside with friction reduction mechanisms at room temperature are systematically investigated. The GO-Ti3AlC2 synergistically enhanced Cu matrix composite exhibits lower COF and wear rate than those composites reinforced with GO or Ti3AlC2 alone, for GO and Ti3AlC2 synergistically bear the load and form continuous, compact and lubricating tribo-layer on the worn surface. |
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| Keywords: | Graphene oxide Synergistically reinforced effect Tribological behavior Wear mechanism |
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