CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
3D Online Submicron Scale Observation of Mixed Metal Powder's Microstructure Evolution in High Temperature and Microwave Compound Fields
Kang, D; Xu, F; Hu, XF; Dong, B; Xiao, Y; Xiao, TQ; xufeng3@ustc.edu.cn
2014
Source PublicationSCIENTIFIC WORLD JOURNAL
ISSN1537-744X
AbstractIn 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.
KeywordX-ray Microtomography
Indexed BySCI
Language英语
WOS IDWOS:000333298200001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/13989
Collection中科院上海应用物理研究所2011-2020年
Corresponding Authorxufeng3@ustc.edu.cn
Recommended Citation
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.,...&xufeng3@ustc.edu.cn.(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).
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