Evaluation of Ultrasonic-cleaning by Electrochemical Measurement.

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  • 電気化学的測定法による超音波洗浄の評価
  • デンキ カガクテキ ソクテイホウ ニヨル チョウオンパ センジョウ ノ ヒョウ

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Abstract

To investigate effective ultrasonic-cleaning, the electrochemical impedance of a model cell and the ultrasoundpressure distribution of a cleaning bath have been measured. The relation between cleaning efficiency and ultrasound pressure was discussed.<br>An electrochemical impedance cell with a blind hole, into which two stainless steel parallel plate-electrodes were mounted, was filled with mineral oil, and immersed in a cleaning solution containing sodium dodecylbenzenesulfonate and ortho sodium silicate, at room temperature. The solution was stirred by an ultrasonic generator mounted on the side wall in the bath.<br>Soundpressure distribution patterns in the cleaning bath were obtained. No correlation was observed between the soundpressure and the oil residual amount. However, the correlation coefficient between the differential soundpressure and the oil residual amount obtained was -0.95.<br>Electrodialysis currents migrating through a cation exchange membrane were measured in the ultrasonic-cleaning bath. The electrodialysis limiting currents decreased with increasing oil residual amounts. From this result, the oil residual amount was proportional to the diffusion film thickness of the surface

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