Densification and grain growth of alumina by microwave processing

详细信息	查看全文 | 推荐本文 |

• 作者：Xie ; Zhipeng ; Yang ; Jinlong ; Huang ; Yong
• 关键词：Microwave sintering ; Alumina ; Densification ; Grain growth
• 刊名：Materials Letters
• 出版年：1998
• 期刊代码：59_0167577x
• 类别：ms
• 出版时间：November, 1998
• 卷：37
• 期：4-5
• 页码：215-220
• 文件大小：754 K

摘要

Highly pure submicron alumina powdered compacts were sintered to a near theoretical density of 99.7%by 2.45 GHz microwave processing. Microwave heating showed enhanced densification processing and short sintering time as compared to conventional heating. However, a relatively large grain growth was observed at temperatures below 1400°C. It was found that there is a comparable grain size of 2.5 μm for the samples sintered by microwave and by conventional methods as they reached near theoretical density.