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Published on: September 28, 2016
Effects of Gd element and SiC particles on microstructures of Cf/Mg composites
Risheng Pei1, Guoqin Chen1, Shaofeng Zhang1
1School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China.
Abstract:
In present work, Cf/Mg-8Gd and SiC+Cf/Mg-8Gd composites were fabricated by squeeze infiltration method. Gd2O3 coating layers were found on the surface of the carbon fibers in these two kinds of the composites, while GdC2 precipitations were found in the hybrid reinforced composite only. Owing to this phenomenon, the coating layer in SiC+Cf/Mg-8Gd composite (88 nm) was much thinner than the one without the SiC particles (160 nm). The Gd2O3 coating layer formed on the surface of carbon fibers can improve the wettability between carbon fibers and magnesium alloy.
