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Journal of Inorganic Materials

Journal of Inorganic Materials

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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

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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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