3D Online Submicron Scale Observation of Mixed Metal Powder's Microstructure Evolution in High Temperature and Microwave Compound Fields
文献类型：期刊论文
| 作者 | Kang, D ; Xu, F ; Hu, XF ; Dong, B ; Xiao, Y ; Xiao, TQ |
| 刊名 | SCIENTIFIC WORLD JOURNAL
 |
| 出版日期 | 2014 |
| 关键词 | X-RAY MICROTOMOGRAPHY |
| ISSN号 | 1537-744X |
| 通讯作者 | xufeng3@ustc.edu.cn |
| 英文摘要 | In order to study the influence on the mechanical properties caused by microstructure evolution of metal powder in extreme environment, 3D real-time observation of the microstructure evolution of Al-Ti mixed powder in high temperature and microwave compound fields was realized by using synchrotron radiation computerized topography (SR-CT) technique; the spatial resolution was enhanced to 0.37 mu m/pixel through the designed equipment and the introduction of excellent reconstruction method for the first time. The process of microstructure evolution during sintering was clearly distinguished from 2D and 3D reconstructed images. Typical sintering parameters such as sintering neck size, porosity, and particle size of the sample were presented for quantitative analysis of the influence on the mechanical properties and the sintering kinetics during microwave sintering. The neck size-time curve was obtained and the neck growth exponent was 7.3, which indicated that surface diffusion was the main diffusion mechanism; the reason was the eddy current loss induced by the external microwave fields providing an additional driving force for mass diffusion on the particle surface. From the reconstructed images and the curve of porosity and average particle size versus temperature, it was believed that the presence of liquid phase aluminum accelerated the densification and particle growth. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000333298200001 |
| 公开日期 | 2015-03-13 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/13989]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Kang, D,Xu, F,Hu, XF,et al. 3D Online Submicron Scale Observation of Mixed Metal Powder's Microstructure Evolution in High Temperature and Microwave Compound Fields[J]. SCIENTIFIC WORLD JOURNAL,2014. |
| APA | Kang, D,Xu, F,Hu, XF,Dong, B,Xiao, Y,&Xiao, TQ.(2014).3D Online Submicron Scale Observation of Mixed Metal Powder's Microstructure Evolution in High Temperature and Microwave Compound Fields.SCIENTIFIC WORLD JOURNAL. |
| MLA | Kang, D,et al."3D Online Submicron Scale Observation of Mixed Metal Powder's Microstructure Evolution in High Temperature and Microwave Compound Fields".SCIENTIFIC WORLD JOURNAL (2014). |
入库方式： OAI收割
来源：上海应用物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。