Effect of nanometer Al₂O₃ powder on microstructure and properties of alumina ceramics by microwave sintering

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• 作者：Yin Liu ; ^{yinliu@aust.edu.cn} ; Fan-fei Min ; Jin-bo Zhu ; Ming-xu Zhang
• 关键词：Alumina ; Nanometer powder ; Microwave sintering ; Microstructure ; Mechanical properties
• 刊名：Materials Science and Engineering ; A
• 出版年：2012
• 期刊代码：61_09215093
• 类别：ms
• 出版时间：1 June, 2012
• 卷：546
• 期：Complete
• 页码：328-331
• 文件大小：751 K

摘要

The effect of nanometer Al₂O₃ powder on microstructure and properties of alumina ceramics by microwave sintering was investigated. The maximum bending strength and fracture toughness of alumina ceramics reach up to 294.41 Mpa and 4.14 Mpa m^1/2, as the alumina ceramics with 20 wt%nanometer A1₂O₃ powder was microwave sintered at 1500 掳C for 30 min. It may be attributed to the addition of nanometer A1₂O₃ powder and microwave-sintering process resulting in a synergistic effect on improvement of microstructure and mechanical properties.