Fabrication and Mechanical Properties of SiC/Cu Composites with Zn Addition by Hot Pressing Sintering

Abstract:

SiC/Cu composites exhibit low density, low coefficient of thermal expansion and excellent mechanical properties. In this study, Zn of 2 wt. % was added as the sintering activator, and the high volume faction (60%) SiC/Cu composites was fabricated by hot pressing sintering technology. The phase composition and morphology of as-prepare samples were characterized by X-ray diffraction (XRD) system and scanning electron microscopy (SEM) equipped with an energy-dispersive spectroscopy (EDS) system. The as-prepared SiC/Cu composites were dense and uniform as well as void free. The results show that SiC/Cu composites can reach excellent mechanical properties of SiC/Cu composites. With the increase of sintering temperature, Vickers hardness and the bending strength of the samples increased obviously and the as-prepared SiC/Cu composites achieved a maximum Vickers hardness and bending strength respectively of 195MPa and 140MPa.

• Periodical: Materials Science Forum (Volumes 745-746)
• Pages: 700-705
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.745-746.700
• Online since: February 2013
• Authors: Huang Liu, Guo Qiang Luo, Pin Gan Chen, Qiang Shen, Lian Meng Zhang
• Keywords: Hot Pressing Sintering, Interface, Mechanical Property, SiC/Cu Composite

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