Marikkannu, C. and Sathiyanarayanan, S. and Mukherjee, D. (2001) Study of the zinc phosphate coating formation on steel impedance spectroscopy. Transactions of the Metal Finishers Association of India, 10 (02). pp. 93-97.

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Zinc phosphating of steel is a pre-treatment process used to improve the adhesion of the overcoats and under film corrosion resistance. In this investigation, an attempt has been made to use impedance spectroscopy as a tool for monitoring the phosphate coating formation on steel at OCP by applying an a.c.signal of 20 mV in the frequency range of 10 kHz to 1 Hz as a function of time. The impedance results have been complemented by the potential-time measurements. Results showed depressed semi-circles in the Nyquist plots, the diameter and depression of such capacitive loops increases with time of immersion

Item Type: Article
Subjects: Corrosion Science and Engineering
Depositing User: ttbdu cecri
Date Deposited: 08 May 2012 07:24
Last Modified: 08 May 2012 07:24

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