Microscopically in-situ investigation for microwave processing of metals by visible light spectroscopy

Motoyasu Sato, Akihiro Matsubara, Kazuo Kawahata, Osamu Motojima, Tetsuro Hayashi, Sadatsugu Takayama, Dinesh Agrawal, Rustum Roy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

"Microwave effect" could be explained by the phenomenon occurring during microwave interactions with materials. In our experiments "microscopically thermal non-equilibrium by selective heating of the components" has been observed. The grains in compacted powder or molecules in a liquid absorb microwave energy selectively at microscopic level, and heat up differently depending upon the degree of absorption of respective phases. The small non-equilibrium hot spots rise, move and dissipate occasionally inside the body. The chemical reactions or phase mixing could be generated at the boundary very rapidly. It leads to rapid reactions at relatively lower temperatures. The overall bulk temperature is lower than the hot spots at microscopic level. In our experiments visible light spectroscopy was used to monitor the reactions under the microscopically thermal non-equilibrium.

Original languageEnglish (US)
Title of host publicationProceedings of the 10th International Conference on Microwave and High Frequency Heating
EditorsCristina Leonelli, Paolo Veronesi
PublisherMicrowave Application Group
Pages277-280
Number of pages4
ISBN (Electronic)8890180420, 9788890180422
StatePublished - Jan 1 2005
Event10th International Conference on Microwave and High Frequency Heating 2005 - Modena, Italy
Duration: Sep 12 2005Sep 15 2005

Publication series

NameProceedings of the 10th International Conference on Microwave and High Frequency Heating

Other

Other10th International Conference on Microwave and High Frequency Heating 2005
CountryItaly
CityModena
Period9/12/059/15/05

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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  • Cite this

    Sato, M., Matsubara, A., Kawahata, K., Motojima, O., Hayashi, T., Takayama, S., Agrawal, D., & Roy, R. (2005). Microscopically in-situ investigation for microwave processing of metals by visible light spectroscopy. In C. Leonelli, & P. Veronesi (Eds.), Proceedings of the 10th International Conference on Microwave and High Frequency Heating (pp. 277-280). (Proceedings of the 10th International Conference on Microwave and High Frequency Heating). Microwave Application Group.