压力浸渗制备三维互连续Al_2O_3/Al复合材料  

Fabrication of 3D Co-continuous Al2O3/AlComposites by Vacuum Pressure Infiltration Process

作　　者：王娟[1] 陈维平[2] 郑开宏[1] 周楠[1] 戚文军[1] 

机构地区：[1]广州有色金属研究院金属加工与成型技术研究所 [2]华南理工大学机械与汽车工程学院

出　　处：《特种铸造及有色合金》2011年第9期856-858,共3页Special Casting & Nonferrous Alloys

摘　　要：用传统日用瓷粘接料浆对99%的Al2O3陶瓷进行素坯连接,成功实现复杂空间构型陶瓷骨架的构建。通过SEM表征了陶瓷骨架粘接界面的微观形貌,结果发现,中间层厚度约250μm,骨架力学性能良好。应用熔体压力浸渗工艺将熔融铝合金与所构建的陶瓷骨架穿插复合,复合后的材料显示出轻质高强的特性。Construction of ceramic network with complicated topological structure was successfully realized by joining 99% Al2O3 ceramic green billets with conventional ceramic slurry.Microstructure of bonding interface of ceramic network was characterized by SEM（scanning electron microscope）.The results show that the thickness of middle layer is approximately 250 μm,and the ceramic network exhibits desirable mechanical properties.Liquid aluminum alloy was infiltrated into the constructed network by pressure infiltration processing to obtain the 3D co-continuous composites.The fabricated composites exhibit the features of light weight and high strength.

关 键 词：陶瓷-金属复合材料 三维网络陶瓷骨架 素坯粘接 熔体浸渗 

分 类 号：TB331[一般工业技术—材料科学与工程] TG146.21[金属学及工艺—金属材料]