Details

Autor(en) / Beteiligte

• Li, Yongcun
• Xu, Feng
• Hu, Xiaofang
• Luan, Yunbo
• Han, Zhijun
• Wang, Zhiyong

Titel

Focusing effect of electromagnetic fields and its influence on sintering during the microwave processing of metallic particles

Ist Teil von

• Journal of materials research, 2015-12, Vol.30 (23), p.3663-3670

Ort / Verlag

New York, USA: Cambridge University Press

Erscheinungsjahr

2015

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Microwave sintering is a novel and efficient technology for the rapid preparation of metallic materials. In this paper, an investigation has been performed on the distribution of microwave electromagnetic fields in a metallic particle system and its influence on sintering behavior. The results show that the microstructure of the “metallic-void” will induce a nonuniform distribution and focusing effect of electromagnetic fields during microwave processing, which may accelerate the sintering process. However, further study shows that the focusing effect will decline as the neck grows larger, and will also decline from outside to inside within the loosely packed powder system, which will result in the slowdown of the sintering rate. These results were supported by the synchrotron radiation computed tomography experimental observation of the microstructure evolution of metallic powders during an entire uninterrupted microwave sintering process.