K-0512 メタノール水溶液中で発生した孔食の光音響法による映像化(S04-1 微視組織と変形・接続信頼性)(S04 金属材料の組織と疲労強度信頼性)

概要

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In this study, imaging of pitting corrosions on pure aluminum plate, that were generated in sodium chloride and sodium bromide/methanol aqueous solution, by photoacoustic microscope (PAM) have been investigated. Electrochemical measurements were conducted in these solutions. Anodic polarization curves were obtained using poentiostat. Immersion tests of a pure aluminum plate were also conducted in these solutions. Nondestructive measurement of real pitting corrosions was carried out using PAM. The amplitude and phase of the photoacoustic (PA) signal were measured at every point of the scan, and PA amplitude and phase images were obtained. The PA amplitude signal intensity varied with both the shape and depth of the pitting corrosion.
一般社団法人日本機械学会の論文
2001-08-22