| Preparation of SiC_p/Al_2O_3-Al Composites by Directed Metal Oxidation |
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| 摘 要： | SiCp/Al2O3-Al composites were synthesized by means of direct metal oxidation method. The composition and microstructures of the composites were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM) and metallurgical microscope. The effects of technical parameters on the properties of the product were analyzed. The results indicate that the composite possesses a dense microstructure, composed of three interpenetrated phases. Of them, SiO2 layer prohibits the powdering of the composites; Mg promotes the wetting and infiltration of the system and Si restricts the interfacial reaction while improving the wetting ability between reinforcement and matrix.
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Preparation of SiCp/Al2O3-Al Composites by Directed Metal Oxidation |
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| Authors: | LIN Ying YANG Hai-bo WANG Fen ZHU Jian-feng |
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| Abstract: | SiCp/Al2O3-Al composites were synthesized by means of direct metal oxidation method. The composition and microstructures of the composites were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM) and metallurgical microscope. The effects of technical parameters on the properties of the product were analyzed. The results indicate that the composite possesses a dense microstructure, composed of three interpenetrated phases. Of them, SiO2 layer prohibits the powdering of the composites; Mg promotes the wetting and infiltration of the system and Si restricts the interfacial reaction while improving the wetting ability between reinforcement and matrix. |
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| Keywords: | SiCp/Al2O3-Al composites directed metal oxidation Al-Mg-Si alloy SiC reinforcement |
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