Preparation and Characterization of Amorphous SiO₂ Coating SiC_p/Cu Composites

Abstract:

Hybrid sol–gel process was used to fabricate the precursor particles of amorphous SiO₂ coating at the composites of SiC_p⁄Cu, and then formed by Vacuum hot-pressed method. Various methods were used to measure the sintered compacts of different SiC volume fraction. The results showed that the densities, bending strength and conductivity were decreased slightly with the increases in the amounts of SiC, and the vickers hardness were increased first and then decreased. The techniques of DTA–TG, SEM–EDS and XRD were used to characterize the phases and the morphologies of the composite particles and composites. It was inferred that the formation of SiO₂–Cu₂O eutectic mixture in this system and the viscous interaction of amorphous SiO₂ improved the interfacial modification of the composites of SiC_p⁄Cu.

• Periodical: Key Engineering Materials (Volumes 512-515)
• Pages: 945-950
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.512-515.945
• Online since: June 2012
• Authors: Xiang Qian Ren, Bing Bing Fan, Qian Fei Han, Peng Hui Wang, Rui Zhang
• Keywords: Amorphous SiO₂, Hot-Pressed, SiC_p⁄Cu, Sol-Gel (SG)

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