Ceramics-reinforced metal matrix composites(MMCs)are widely used in harsh working conditions due to their excellent wear resistance,toughness,high-temperature creep properties and fatigue strength,and have been used in high-end engineering industries such as biomedicine,aerospace,and electronics.Laser cladding is a new environmental protection technology that melts the powder and the surface of the matrix and self-excite the coating formed by the ceramic and other special powders on the surface of the matrix through laser beams,which has the advantages of high deposition efficiency,controllable thickness,small thermal deformation,fast cooling,small dilution rate and metallurgical bonding.The effect of the formation mode of laser cladding ceramic particles on the performance of MMCs was introduced,the interface strengthening effect of laser cladding auxiliary energy field and high-speed laser cladding technology on MMCs was reviewed,and the strengthening mechanism of ceramic particles and the mechanism of laser assisted energy field were analyzed.Finally,the current problems and prospects of laser-clad ceramic particle reinforced metal-based composites were expounded.
关键词
陶瓷颗粒/激光熔覆/金属基复合材料/机械性能/辅助能场
Key words
ceramic particles/laser cladding/metal matrix composites/mechanical properties/auxiliary energy field
维普
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