钛合金熔模精铸氧化锆陶瓷型壳/金属界面反应研究  

Study on metal/shell interaction in ZrO 2 ceramic mould during titanium investment casting

作　　者：李邦盛[1] 蒋海燕[1] 李志强[1] 范洪波[1] 安阁英[1] 

机构地区：[1]哈尔滨工业大学

出　　处：《航空材料学报》1999年第2期43-47,共5页Journal of Aeronautical Materials

摘　　要：通过实际浇注和真空扩散连接分别制取了钛／型壳界面，借助ＳＥＭ、ＥＰＭＡ和显微硬度仪等分析测试手段对所得界面进行了深入研究，初步提出了以Ｚｒ、Ｏ元素向钛基体内的扩散为主导的界面反应机制。实验结果表明，界面反应并非在整个界面上均衡推进，而是在浓度、温度、能量起伏。The metal/shell interface has been prepared by means of investment casting and diffusion bonding, respectively. Then the obtained interfaces are thoroughly studied using SEM、EPMA and micro hardness analysis. Finally, an interaction mechanism on the basis of thermal diffusion of Zr、O into titanium matrix is founded.The experimental results show that other than advancing uniformly on the whole interface,the interface reactions preferably take place in the areas where there are undulations of concentricity,temperature,and energy,as well as appropriate surface orientation of ceramic particles.

关 键 词：钛合金 熔模精铸 金属/型壳界面 反应模型 陶瓷 

分 类 号：TG146.23[一般工业技术—材料科学与工程]