中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 15 No. 2 April 2005 |
（1. Institute of Materials Science and Engineering,
Changsha University of Science and Technology, Changsha 410076, China;
2. College of Materials Science and Engineering, Hunan University,
Changsha 410082, China）
Abstract:Cu matrix composites reinforced by carbon nanotubes(CNTs) were prepared. The effect of carbon nanotubes on mechanical and tribological properties of the Cu matrix composites were investigated. The chemical method for coating CNTs was reported. The morphology of the fracture surfaces and worn surface were examined by SEM. The results show that Cu/coated-CNTs composites have higher hardness, much better wear resistance and anti-friction properties than those of the reference Cu alloy (Cu-10Sn) and Cu/uncoated-CNTs composite sintered under the same conditions. The optimal mechanical properties of the composites occurred at 2.25%(mass fraction) of CNTs. The excellent wear resistance and anti-friction properties are attributed to the fiber strengthening effect of CNTs and the effect of the spherical wear debris containing carbon nanotubes on the tribo-surface.
Key words: carbon nanotube; copper; composite; tribological property
