On-line tools for microscopic and macroscopic monitoring of microwave processing

✍ Scribed by S. Vaucher; P. Unifantowicz; C. Ricard; L Dubois; M. Kuball; J.-M. Catala-Civera; D. Bernard; M. Stampanoni; R. Nicula

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 835 KB
• Volume: 398
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2007.04.064

✦ Synopsis

Direct monitoring of temperature, chemistry and microstructure is required to understand microwave heating in more detail, in order to fully exploit the unique features this non-equilibrium processing method can offer. In this paper, we show first that microwave radiometry can be used to follow volumetrically the thermal trajectory of microwave-heated aluminium powder. In-situ Raman spectroscopy is then shown to evidence thermal gradients between diamond and silicon grains in a binary powder mixture. Finally, perspectives and preliminary results of microstructural analysis obtained from X-ray microtomography are presented.