SiC/Al复合材料嵌入SiO_2的界面与力学性能  

Effect of SiO_2 Embedded on Interface and Bending Strength of SiC/Al Composite

作　　者：马春雪[1] 袁曼[1] 陈闯[1] 薛晨[1] 

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072

出　　处：《热加工工艺》2012年第24期134-136,共3页Hot Working Technology

基　　金：国家自然科学基金资助项目(60776019)

摘　　要：采用气压浸渗法实现了SiC/Al和SiO2构件的原位连接,SiC/Al复合材料组织浸渗致密,SiC颗粒的分布较均匀。该复合材料的主要断裂机制为基体和颗粒的混合断裂。SiC/Al和SiO2构件在界面处发生了反应,主要生成了Al2O3和Si。SiC/Al/SiO2的抗弯强度随保温时间的增加而增加,10 min为最佳的保温时间。SiO2 was bonded with SiC/A1 by pressure infiltration. SiC/A1 composite was well infiltrated and the distribution of SiC particle was uniform. The main fracture mechanism is the mixture of matrix and particle fracture. The chemical reaction occurs in SiC/A1-SiO2 interface and the main formations are A1203 and Si. The bending strength of SiC/A1/SiO2 increases as the holding time increasing and 10 min is determined to be the optimal holding time.

关 键 词：复合材料 界面 抗弯强度 

分 类 号：TB333[一般工业技术—材料科学与工程]