Al<sub>2</sub>O<sub>3</sub> / 3Y-TZP 层状复合材料的制备及其超塑性能

Al₂O₃ / 3Y-TZP 层状复合材料的制备及其超塑性能

基金项目: 哈尔滨工业大学校基金资助( Hit . 2002. 36); 国家自然科学基金资助项目(50375037)

详细信息

School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

摘要

摘要: 采用流延制膜和热压烧结工艺制备了Al₂O₃ / 3 Y-TZP 层状复合材料。用SEM 观察显微组织, 并采用高温深拉实验对该材料进行了超塑性能研究。结果表明: 1550 ℃热压烧结制备的材料晶粒细小, 界面结合良好;当应变速率一定时, 变形温度对Al₂O₃ / 3Y-TZP 层状复合材料的超塑性能具有重要影响, 1500 ℃时得到深拉成形最大高度, 温度较高和较低时超塑性能均会降低。
- 流延 /
- 热压烧结 /
- 超塑成形 /
- 深拉 /
- 陶瓷基层状复合材料
Abstract: Al₂O₃ / 3Y-TZP laminated composite was fabricated using the tape casting and hot-press sintering. Themicrost ructure was observed by SEM. The as-received material was deep-drawn at high temperatures to research it ssuperplasticity. The result s show that the microst ructure of the material sintered at 1550 ℃has fine grain and st ronginterfaces. When the st rain rate is constant, the forming temperature has great influence on the superplasticity ofAl₂O₃ / 3Y-TZP laminated composite. The greatest deformation height of deep-drawing was obtained at 1500 ℃. Itis worse at higher or lower forming temperatures.
- tape casting /
- hot-press sintering /
- superplastic forming /
- deep-drawing /
- laminated ceramic mat rix composites