摘要
利用电子探针、透射电子显微技术，研究了挤压铸造法制备的莫来石（３Ａｌ２Ｏ３ ·２ＳｉＯ２ ）纤维增强ＺＬ１０９ 合金复合材料的纤维与基体界面。研究中未发现纤维与基体界面有Ｃｕ 元素偏聚及其析出相与反应产物，而界面有明显的Ｍｇ、Ｓｉ元素偏聚，并发生Ｍｇ＋ ２ＳｉＯ２＋ ２Ａｌ→ＭｇＡｌ２Ｏ４＋ ２Ｓｉ反应，反应产物ＭｇＡｌ２Ｏ４
In this paper ,fiber-matrix interfaces in 3Al 2O 3·2SiO 2 f /ZL109 composites have been investigated by means of EDS and TEM.It is concluded that there are the segregation of elements Mg and Si and reaction product MgAl 2O 4 on the fiber-matrix interfaces,and the reaction product nucleates and grows on the surface of fiber.The thermodynamic equation for the formation of MgAl 2O 4 is Mg(l)+SiO 2(s)+2Al(l)→MgAl 2O 4(s)+2Si(s).But,it did not reveal that there are the segregation of element Cu and reaction product or precipitant containing Cu on the fiber-matrix interfaces.
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
1999年第5期20-23,共4页
Ordnance Material Science and Engineering
基金
国家自然科学基金
