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Evaluation of coating performance using break point frequency

DSpace at IIT Bombay

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Field Value
 
Title Evaluation of coating performance using break point frequency
 
Creator DEVI, RG
SEN, S
GIRIDHAR, J
RAJA, VS
 
Subject electrochemical impedance spectroscopy
coated steel
organic coatings
corrosion behavior
metals
deterioration
eis
 
Description Break point frequency values were used to evaluate the degradation of alkyd and epoxy coatings on rolled steel panels. Panels of size 6'' x 4'' were given the following coatings. 1. Alkyd primer(35 mu m) 2. Phosphating (10 mu m) + Alkyd primer (35 mu m) 3. Phosphating (10 mu m) + Alkyd primer (35 mu m) + Alkyd top coat (35 mu m) 4. Epoxy primer (50 mu m) 5. Phosphating (10 mu m) + Epoxy primer (50 mu m) 6. Phosphating (10 mu m) + Epoxy primer (50 mu m) + Epoxy top, coat (50 mu m) Corrosion of these panels was accelerated by exposing the coated panels to a neutral salt spray of 5% NaCl solution for long exposure times and impedance measurements were carried out at various intervals of time. The break point frequency values were found to increase with the time of exposure to the corrosive environment. There was a correlation between the number of blisters, the average blister area and the break point frequency. Various coating systems were ranked on the basis of break point frequency values.
 
Publisher METAL FINISHERS ASSOC INDIA
 
Date 2011-08-18T17:59:20Z
2011-12-26T12:55:51Z
2011-12-27T05:43:00Z
2011-08-18T17:59:20Z
2011-12-26T12:55:51Z
2011-12-27T05:43:00Z
1996
 
Type Article
 
Identifier TRANSACTIONS OF THE METAL FINISHERS ASSOCIATION OF INDIA, 5(4), 7-14
0971-5304
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10093
http://hdl.handle.net/10054/10093
 
Language en