Effect of Ni Coated SiC on Mechanical Properties of SiC/Fe Composites

Abstract:

A facile onestep in situ chemical deposition method was introduced to synthesize Ni coated SiC composite powders, which used NiCl₂·6H₂O as nickel source and N₂H₄·H₂O as reductant, respectively. SiC(Ni)/Fe composites were prepared by current-vacuum hot-pressed sintering at 850°C, 40MPa for 30min. Scanning electronic microscope (SEM) and X-ray diffraction (XRD) were used to characterize the structure, morphology and composition of the prepared Ni/SiC core/shell composite powders. It is found that the Ni coated SiC is favorable to improve the dispersion and compatibility of SiC(Ni)/ Fe composites. By a series of contrast experiments, it is shown that the sintering sample with 5wt% of SiC(Ni) has the best mechanical properties. The relative density, Vickers hardness and bending strength is 91.67%, 4.72GPa and 508MPa, respectively.

• Periodical: Key Engineering Materials (Volumes 602-603)
• Pages: 578-581
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.602-603.578
• Online since: March 2014
• Authors: Bin Bin Wang, Bing Bing Fan, Wen Li, Chen Yang Wang, Bing Sun, Biao Zhao, Xiao Xuan Pian, Hao Chen, Rui Zhang*
• Keywords: Interface Modification, Ni Coated SiC, SiC/Fe Composites

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DOI: 10.1179/00325890322500849

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