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Atmospheric Corrosion Behavior of the Pure Zirconium
Ayami Kameda,Yuki Kagawa,Ayumu Yokota,Youhei Hirohata,Kazuhiko Noda 한국표면공학회 2010 한국표면공학회 학술발표회 초록집 Vol.2010 No.11
The zircalloy improved the corrosion resistance and the materials strength, largely is used for a fuel aggregate member, a pressure pipe, and the fuel coating pipes of the nuclear reactor. The estimation of the reaction characteristics of pure zirconium is important in order to investigate the application in actual using. The pure zirconium was examined by the polarization curves measurement in solution environment and the surface potential distribution measurement to evaluate the stability of the passive film on zirconium as the fundamental data. A surface potential measurement device with non-contact probe is applied to measure the potential of the pure zirconium. The corrosion behavior of the pure zirconium surface is also investigated by using the surface potential date. The surface potential distribution of pure zirconium shows a good corrosion resistance in the atmospheric condition.
Degradation of Fuel Cell Characteristic in PEFC by Hydrogen Peroxide
Namsun Choi,Ayami Kameda,Shinji Kato,Tomohiro Tanabe,Kazuhiko Noda,Hachiro Imai 한국표면공학회 2010 한국표면공학회 학술발표회 초록집 Vol.2010 No.11
The hydrogen peroxide made by the reaction in a fuel cell may degrade the conductivity in polymer electrolyte fuel cells (PEFC) . The degradation behavior of solid polymer electrolyte membrane in PEFC is investigated by using membrane that was immersed into hydrogen peroxide solutions as sample for each measurement. The measurement of the proton diffusion rate in the membrane was performed for the proton conductivity measurement. The current-cell voltage curve measurement was performed for the investigation of a fuel cell performance. The measurement of proton diffusion rate of a solid polymer electrolyte membrane can be applied to evaluate conductivity in a fuel cell.