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用β-Si3N4纳米颗粒浆料浸渍多孔聚合物材料,通过加热烧蚀掉聚合物,制备出三维空间连续网络结构预制块体,再通过无压浸渗将已熔炼好的铝液浸渗到预制体中,成功制备出陶瓷与金属相互贯穿的Si3N4/Al金属基复合材料。利用座滴定法测试了Al在Si3N4基片上的润湿角,探讨了其浸渗机理,分析了润湿角、浸渗力、浸渗温度和浸渗时间对Si3N4/Al金属基复合材料浸渗行为的影响。
The porous polymer material is impregnated with a β-Si3N4 nanoparticle slurry, and the polymer is ablated by heating to prepare a prefabricated block body of a three-dimensional continuous network structure, and infiltrating the melted aluminum liquid through a pressureless infiltration into a prefabricated In the body, Si3N4 / Al metal matrix composites with ceramic and metal penetrating each other were successfully prepared. The wetting angle of Al on Si3N4 substrate was measured by the method of Cartridge titration. The impregnation mechanism was discussed. The effects of wetting angle, impregnation force, impregnation temperature and impregnation time on the Si3N4 / Al metal matrix composites The impact of behavior.