液钛与氧化锆陶瓷型壳的相互作用  

METALMOULD INTERACTIONS DURING CASTING OF TITANIUM IN ZIRCONIA SHELL MOULD

作　　者：蒋海燕[1] 李邦盛[1] 李志强[1] 安阁英[1] 

机构地区：[1]哈尔滨工业大学金属精密热加工国防科技重点实验

出　　处：《中国有色金属学报》1999年第2期273-277,共5页The Chinese Journal of Nonferrous Metals

基　　金：国防科工委重点科研项目

摘　　要：借助于Ｘ射线衍射、电子探针和扫描电镜等测试手段，研究了液钛与氧化锆陶瓷型壳的相互作用。结果表明，界面反应一方面基于型壳中的ＺｒＯ２分解和Ｚｒ，Ｏ原子向钛基体的扩散，形成ＣａＺｒＴｉ２Ｏ７相；另一方面液钛也向氧化锆型壳中扩散，形成Ｃａ２Ｚｒ５Ｔｉ２Ｏ１６相。阐述了液钛与氧化锆陶瓷型壳相互作用的双向扩散机制。指出降低浇注温度可减弱钛与型壳的界面反应。The metalmould interactions during casting of titanium in zirconia shell mould has been studied by means of SEM, EPMA and XRD. The results showed that the interface reaction is based on the dilution of the ZrO2 and the diffusion of Zr and O in titanium matrix, and a new CaZrTi2O7 phase is formed in titanium investment casting surface; at the same time, Ti diffuses into the zirconia ceramic mould and forms another new compound Ca2Zr5Ti2O16. An interface reaction model was founded and it was pointed out that the metalmould interaction can be weakened by lowering the pouring temperature.

关 键 词：相互作用 液钛 氧化锆陶瓷型壳 铸定 

分 类 号：TG292[金属学及工艺—铸造] TG214