纳米晶粉体在A12O3-ZrO2-CeO2-Y2O3体系中用于高性能陶瓷

2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE) Pub Date : 2012-09-01 DOI:10.1109/OMEE.2012.6464791

A. V. Shevchenko, V. V. Tsukrenko, E. V. Dudnik, A. Ruban

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引用次数: 0

摘要

采用x射线衍射、BET测量、扫描电子和光学显微镜分析了成分为90 wt% al2o3 ~ 10 wt%ZrO2 (CeO2, Y2O3)的水热纳米晶粉末在400 ~ 1300℃范围内热处理后的性能变化。zro2基固溶体的组成为(mol %) 90ZrO2-8CeO2-2Y2O3。结果表明，α-Al2O3在850℃形成。在1000℃时发生相变F-ZrO2;生产的粉末在1300℃下烧结。本研究表明，复合纳米晶粉末的热处理过程复杂。对这些过程的理解使得优化制造具有定制性能的高级陶瓷的条件成为可能。

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Nanocrysrtalline Powders in the A12O3-ZrO2-CeO2-Y2O3 system for high-performance ceramics

X-ray diffraction, BET measurements, scanning electron and optical microscopy were used to analyze the properties variation of hydrothermal nanocrystalline powder with a composition 90 wt% Al2O3-10 wt%ZrO2 (CeO2, Y2O3) after thermal treatment in the temperature range 400–1300 °C. The composition of the ZrO2-based solid solution was (mol %) 90ZrO2-8CeO2-2Y2O3. It was found that α-Al2O3 is formed at 850 °C. Phase transformation F-ZrO2⇆T-ZrO2 occurred at 1000 °C. Produced powder was sintered at 1300 °C. The present investigation demonstrates that heat treatment of composite nanocrystalline powders gives rise to complex processes. Understanding of such processes makes it possible to optimize conditions for fabrication of advanced ceramics with tailored properties.

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来源期刊

2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)

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