| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
Fundamental phenomena in a multiphase AC arc as an attractive thermal plasma source has been successfully understood on the basis of a high-speed visualization technique. Optical band-pass filter and the high-speed camera was combined to visualize nanoparticle precursor in thermal plasmas. In the present work, metal oxide nanoparticles such as aluminum oxide and titanium oxide and metal nitride nanoparticles were successfully synthesized. Moreover, their oxide molecular which are precursor of the nanoparticles and temperature field of the multiphase AC arc were visualized. In addition, an innovative generating system of AC arc system has been developed to improve electrode erosion characteristics in the multiphase AC arc on the basis of the understanding of the electrode erosion mechanism in the thermal plasma. Electrode erosion was drastically reduced by new generating system due to the diode-rectification.
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