Compact coating impedance detector for fast evaluation of coating degradation
By Kuo, Yu-Tong; Lee, Chung-Ying; Lee, Yueh-Lien
Published in Measurement
2018
Abstract
In this paper, a prototype miniaturized impedance measurement instrument, a coating impedance detector (CID), is proposed to provide a quick estimate of the protective capacity of coatings. The performance of the CID was compared with a conventional potentiostat by measuring the impedance modulus of commercial coatings. Five coated samples with various impedance moduli were used to evaluate the efficiency and functionality of the CID. The results indicate a good correlation between the impedance moduli obtained by the CID and laboratory-type potentiostat in the range of 107