无机材料学报

• 研究论文 • 上一篇    下一篇

影响ZTA陶瓷微波烧结的主要工艺过程

张锐1; 符水龙1; 卢红霞1; 许红亮1; 韩东方1; 郑隆烈2   

  1. 1. 郑州工业大学材料科学与工程系, 郑州 450002; 2. 清华大学材料科学与工程系, 北京 100084
  • 收稿日期:2000-01-31 修回日期:2000-03-14 出版日期:2001-01-20 网络出版日期:2001-01-20

Processes Affecting Microwave Sintering of ZTA Ceramics

ZHANG Rui1; FU Shui-Long1; LU Hong-Xia1; XU Hong-Liang1; HAN Dong-Fang1; ZHENG Long-Lie 2   

  1. 1.Department of Materials Science & Engineering; Zhengzhou University of Technology; Zhengzhou 450002; China; 2. Department of Materials Science & Engineering; Tsinghua University, Beijing 100084, China
  • Received:2000-01-31 Revised:2000-03-14 Published:2001-01-20 Online:2001-01-20

摘要: 通过对ZTA陶瓷进行微波烧结试验,了解影响陶瓷微波烧结速率的主要工艺过程,探索有关微波烧结机理;采用以TE444为基准模式的微波谐振腔,在混合加热模式的基础上增设辅助加热体,实现了ZTA陶瓷微波烧结; ZTA材料中ZrO含量越高,该材料的烧结速率越快;输入功率的提高有助于提高烧结速率;辅助加热体的老化现象降低微波烧结速率;微波烧结过程中应避免出现热剧变现象.

关键词: ZTA, 微波烧结, 烧结速率

Abstract: The Al2O3-ZrO2 system was chosen to be fabricated by microwave sintering. The principal
processes affecting the sintering rate were analysed on account of the properties of ZTA ceramics. The TE444 multi-mode
microwave system was designed and a hybrid heating system was developed with well arranged aided heaters. The ZrO2 content
in ZTA samples affected the microwave sintering rate, which showed the probability for the low-loss materials to be
sintered by microwave process mixed with high-loss materials to raise their sintering rate. The increase of the inlet
power made the temperature raise rapidly. The aging phenomena of the aided heaters lowered the sintering rate and the thermal runaway should be avoided
to advance the sample properties.

Key words: ZTA, microwave sintering, sintering rate

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