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The impedance of oxide films on magnesium electrodes anodized in NaOH solutions of various concentration was examined by use of an A.C. bridge. Impedance measurements showed that the formation of porous films in the active state proceeded with dissolution of magnesium. The current density in the passive state depended on the potential, but independed on it in near the oxygen evolution range. Magnesium was anodically oxidized under potentiostatic conditions. The slope of the logarithmical current-time transient for a series of potentials in the passive state range was -1/2, which suggested that the film was insulated oxide. The X-ray diffraction and scanning electron microscopy showed the Mg(OH)2 film grown potentiostatically for up to 1000min at 2.0V.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
- Mechanical and wear properties of SiC whisker/ADC12 aluminum alloy composites fabricated by die casting.
- Joining of aluminum and ceramics.
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- Undercooling and solidification behavior of fluid clumps of second-poured melt of hypereutectic Al-Si alloy in Duplex Casting process.
- Change in apparent viscosity of stirred slurry during production of semi-solid hypereutectic Al-Si alloy by slurry-melt mixing process.