活化剂对自浸渗法制备SiCp/Al复合材料的影响

Effect of Activator on SiCp/Al Composite Fabricated by Pressureless Infiltration

研究了以K2 TiF6为助渗剂 ,Mg及La2 O3 为活化剂 ,在大气条件下无压力自浸渗制备颗粒增强铝基复合材料的新方法。结果表明 ,加入活化剂阻止了复合材料中脆性相Al3Ti,Al4 C3 的产生 ;

In this paper,a new method of fabricating Al matrix composite by particles with pressureless infiltration at air condition was studied.K 2TiF 6 is used as soak promoter,Mg and La 2O 3 are used as activator.The results showed that adding activator can prevent generation of brittle phases Al 3Ti and Al 4C 3 in composite.It has a important role on improving structure and properties of SiCp/Al composite fabricating by pressureless infiltration.