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Production and properties of Cu/TiO2nano-composites

Moghanian, A ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jallcom.2016.12.180
  3. Abstract:
  4. Copper matrix composites reinforced with TiO2particles are promising materials widely used as contact materials due to their excellent mechanical and physical properties such as good electrical and thermal conductivity and strength at high temperature. In this research, the novel contact material were prepared by in-situ oxidation of Cu-Ti pre alloyed powders. The morphology of milled powders and microstructure of nano-composite specimens were studied by SEM and TEM. To evaluate mechanical alloying progress of Cu and Ti powders mixture and internal oxidation after Cu2O addition, XRD analysis were carried out. The Physical and mechanical properties results of specimens indicate that the density, specific electrical resistivity, hardness and wear rate values change significantly with amount of TiO2in Cu matrix. Hardness and specific electrical resistivity increased and density of Cu/TiO2nano-composites decreased with increasing amount of TiO2in Cu matrix. © 2016 Elsevier B.V
  5. Keywords:
  6. Contact materials ; Cu/TiO2 ; Electrical properties ; Metal-matrix composites ; Density (specific gravity) ; Electric conductivity ; Electric contacts ; Electric properties ; Hardness ; Internal oxidation ; Mechanical alloying ; Mechanical properties ; Nanocomposites ; Particle reinforced composites ; Powder metals ; Powders ; Thermal conductivity ; Titanium dioxide ; Contact material ; Copper matrix composite ; In-situ oxidation ; Mechanical and physical properties ; Physical and mechanical properties ; Powder production ; Pre-alloyed powder ; Specific electrical resistivities ; Metallic matrix composites
  7. Source: Journal of Alloys and Compounds ; Volume 698 , 2017 , Pages 518-524 ; 09258388 (ISSN)
  8. URL: https://www.sciencedirect.com/science/article/abs/pii/S0925838816340993