Effect of Sintering Temperature on Friction Performance of Cu-based Nanometer Composites Reinforced by Nano SiO2 Particles
Abstract.
The Cu-based nanometer composites reinforced by 1.0 wt% nano-SiO2 particles (Cu/n-SiO2) were prepared by powder metallurgy at different sintering temperature. The friction performance of the composites were studied by ball-disk friction tester. The results indicate the dynamice friction coefficient and wear rate of the composites gradually increase with the sintering temperature increasing (between 800 and 950 ) ℃ .
Intorduction
The nano SiO2 particles are amorphous inorganic non-metallic materials, which have excellent properties such as wear resistance and corrosion resistance because of its small size effect, surface and interface effect and so on. The nano SiO2 are widely used in high polymer, ceramics, coatings and biomedical fields [1-2]. In recent years, nano-SiO2 particles are gradually used in Cu-based composites. Besides keeping copper’s original excellent conductivity, thermal conductivity and elastic-plastic properties, nano-SiO2 can enhance the strength a