In-situ spectroscopy and two-color thermography during microwave irradiation in materials processing

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

Abstract

In ?-Fe2O3 + C system, a plasma discharge (such as CN and N2) during microwave E-field irradiation and local temperature distribution is are investigated by using in situ emission spectroscopy device and high-resolution two-color thermography. The time development of excited plasma in E-field irradiation demonstrate that excited N2, C and CN were observed at first but CN excitation was sustained at least 3 seconds. In microwave H-field irradiation, -Fe2O3 powders were selectively heated compared to carbon. Excited CN results in enhancement of the reduction reaction in addition to thermal reduction in E-field irradiation, and selective heating of -Fe2O3 suggests a reduction reaction proceeds in thermally non-equilibrium condition in H-field irradiation.

Original languageEnglish
Title of host publicationAMPERE 2019 - 17th International Conference on Microwave and High Frequency Heating
EditorsBeatriz Garcia Banos
PublisherAmerican Society for Precision Engineering, ASPE
Pages373-377
Number of pages5
ISBN (Electronic)9788490487198
DOIs
Publication statusPublished - 2019
Event17th International Conference on Microwave and High Frequency Heating, AMPERE 2019 - Valencia, Spain
Duration: 2019 Sep 92019 Sep 12

Publication series

NameAMPERE 2019 - 17th International Conference on Microwave and High Frequency Heating

Conference

Conference17th International Conference on Microwave and High Frequency Heating, AMPERE 2019
CountrySpain
CityValencia
Period19/9/919/9/12

Keywords

  • High spatial resolution
  • In-situ measurement
  • Microwave selective heating
  • Plasma exciting

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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