Paper Title:
Study on Effect of Different Preparation Process Parameters on Properties and Microstructure of SiO2/Cu Composites
  Abstract

The SiO2 nanoparticles reinforced Cu-matrix composites were prepared by powder metallurgy technology.The influences of SiO2 volume fraction on the properties of hardness、conductivitity rate and wear behavior of Cu-matrix composites were studied. The results showed that conductivity rate was decreased with the increase of the SiO2 volume fraction;whereas the hardness was increased, then decreased and wear behavior was increased. Sintering an hour of performance was superior to the sintering half an hour.When SiO2 nanoparticle volume fraction was achieved 2.5%, comprehensive properties of SiO2/Cu composite were obviously increased.The microstructures revealed that the second phase particles precipitated dispersedly in copper matrix after hot extrusion. with the increase of the strengthen phase particle volume fraction, nanoparticles appeared together and gathered in grain boundary of copper matrix.

  Info
Periodical
Chapter
Chapter 6: New Materials and Advanced Materials
Edited by
Huixuan Zhang, Ye Han, Fuxiao Chen and Jiuba Wen
Pages
908-912
DOI
10.4028/www.scientific.net/AMM.117-119.908
Citation
C. H. Zheng, K. X. Song, X. H. Guo, Y. J. Zhou, "Study on Effect of Different Preparation Process Parameters on Properties and Microstructure of SiO2/Cu Composites", Applied Mechanics and Materials, Vols. 117-119, pp. 908-912, 2012
Online since
October 2011
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$32.00
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