Title :
Millimeter and submillimeter wave sintering of ceramics
Author :
Mitsudo, Seitaro ; Sakai, Kazuki ; Idehara, Toshitaka ; Saji, Tasaburo ; Saito, Teruo ; Sano, S.
Author_Institution :
Res. Center for Dev. of Far Infrared Region, Univ. of Fukui, Fukui
Abstract :
The effect characteristic of high frequency and strong electric field processing was observed. One of interest effects is so called non-thermal effect or microwave effect. In order to widely study the non-thermal effect of ceramics sintering. We developed a material processing system by using a 300 GHz gyrotron. This system consists of a 300 GHz, 3.5 kW, CW gyrotron (gyrotron FU CW I) with a cryogen-free 12 T superconducting magnet, a corrugated circular waveguide and applicator. Boron carbide is one of advanced materials and is being used in a wide rage of applications. 24 GHz microwave processing for boron carbide ceramics were performed. Enhanced sintering (non-thermal effect) was observed.
Keywords :
ceramics; circular waveguides; electric fields; gyrotrons; submillimetre wave devices; superconducting magnets; boron carbide carbides; ceramics sintering; corrugated circular waveguides; cryogen-free superconducting magnet; electric field processing; frequency 24 GHz; frequency 300 GHz; gyrotrons; material processing system; microwave effects; microwave processing; millimeter-submillimeter wave sintering; nonthermal effects; power 3.5 kW; Applicators; Boron; Ceramics; Frequency; Gyrotrons; Magnetic materials; Materials processing; Submillimeter wave devices; Superconducting magnets; Superconducting materials; Boron compounds; Ceramics; Gyrotrons; Millimeter wave technology; Submillimeter wave technology;
Conference_Titel :
Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics. IRMMW-THz. Joint 32nd International Conference on
Conference_Location :
Cardiff
Print_ISBN :
978-1-4244-1438-3
DOI :
10.1109/ICIMW.2007.4516491
