| Summary: | 碩士 === 國立中央大學 === 機械工程研究所 === 92 === Abstract
This thesis focus on the survey of aluminum foil primarily. In order to know exactly the corrosion morphology by image software analyzing etched-foils. We investigated the effects of etching morphology on surface increment.
By changing etching time in E1 and E2 solution we investigated the pit morphology including the pit size, the pit number and pit length that depended on image analysis. Besides, it can also set up the relationships between the effect factors and the capacitance values.
It was found that the more etching time increased pit size, tunnel length and pit number. The pit number decreased with higher etching beyond the ideal etching range. The phenomenon is not good for increasing total surface area. For this reason it can find out every effect factor under ideal etching range that setting up a mathematical model including C-Atotal (a,L,N) and C-t equations. The two models are great benefit to aluminum etching engineering for describing and projecting it.
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