Research Progress in Preparation Methods of SiC Particle Reinforced Al Matrix Composites

SiC particle reinforced aluminum matrix(SiC_P/Al) composites have excellent properties, such as high density, high conductivity thermal property, low expansion property and so on. They have broad application prospects in electronic packaging, automotive, mechanical, aerospace and other fields. At present, the preparation methods of SiC_P/Al composites in Chaina and abroad were introduced, including powder metallurgy, stirring casting, jet deposition, non-pressure leaching, extrusion casting and laser additive manufactureing. The application and shortcomings of different preparation methods in large-scale commercial production were pointed out. The advantages of SLM forming technology in preparing medium/high volume integral SiC_P/Al composites were emphatically expounded. The preparation of defect-free medium/high volume integral SiC_P/Al composites was possible by SLM rapid condensation molding technology.