Server maintenance is scheduled for Saturday, December 21st between 6am-10am CST.

During that time, parts of our website will be affected until maintenance is completed. Thank you for your patience.

Menu
Search
Filters
Close
Menu

99312 CURRENT DEMAND AS A RESULT OF COATING VOID TO INTACT COATING SURFACE AREA RATIO

Picture for 99312 CURRENT DEMAND AS A RESULT OF COATING
Available for download
Product Number: 51300-99312-SG
ISBN: 99312 1999 CP
Author: John Repp & Jim Ellor, P.E.
$0.00
$20.00
$20.00
Previous research has suggested that a coated steel substrate can be cathodic to boldly exposed steel in seawater. As a result logic would suggest that the corrosion rate at deftis in the coating would be a finction of the coating to holiday surface area ratio. To examine this hypothesis four (4) surface area ratios were tested in natural seawater. These ratios are 3:1, 10:1, 136:1 and 1176:1 (coated to exposed steel). Coated panels were painted with a ML-P-24441 epoxy barrier coating and electrically coupled to exposed steel. During testing the current between mated and uncoated samples was monitored along with the potential between the couple and a saturated calomel reference electrode (SCE). Testing has been conducted for over one year, with each area ratio showing interesting trends. This paper discusses the current flow of each area ratio, and how it relates to the corrosion rate of exposed steel. Whether the corrosion is anodlcally or catholically controlled, and to what extent, are evaluated. Finally, “real-world” applications of this type of analysis will be discussed.
Previous research has suggested that a coated steel substrate can be cathodic to boldly exposed steel in seawater. As a result logic would suggest that the corrosion rate at deftis in the coating would be a finction of the coating to holiday surface area ratio. To examine this hypothesis four (4) surface area ratios were tested in natural seawater. These ratios are 3:1, 10:1, 136:1 and 1176:1 (coated to exposed steel). Coated panels were painted with a ML-P-24441 epoxy barrier coating and electrically coupled to exposed steel. During testing the current between mated and uncoated samples was monitored along with the potential between the couple and a saturated calomel reference electrode (SCE). Testing has been conducted for over one year, with each area ratio showing interesting trends. This paper discusses the current flow of each area ratio, and how it relates to the corrosion rate of exposed steel. Whether the corrosion is anodlcally or catholically controlled, and to what extent, are evaluated. Finally, “real-world” applications of this type of analysis will be discussed.
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for 00680 COATING QUALITY IN CP/COATING SYSTEMS
Available for download

00680 COATING QUALITY IN CP/COATING SYSTEMS - COMPARISON OF ACCELERATED TEST AND LONG TIME EXPOSURE

Product Number: 51300-00680-SG
ISBN: 00680 2000 CP
Author: Unni Steinsmo, Marit Bjordal, Ole Oystein Knudsen and Tone Solem
$20.00
Picture for 01512 CURRENT DEMAND FOR CATHODIC PROTECTION
Available for download

01512 CURRENT DEMAND FOR CATHODIC PROTECTION OF COATED STEEL - 5 YEARS DATA

Product Number: 51300-01512-SG
ISBN: 01512 2001 CP
Author: Ole Oystein Knudsen and Unni Steinsmo
$20.00
Picture for 98276 SELECTION OF CORROSION INHIBITORS
Available for download

98276 SELECTION OF CORROSION INHIBITORS TO CONTROL MICROBIOLOGICALLY INFLUENCED CORROSION

Product Number: 51300-98276-SG
ISBN: 98276 1998 CP
Author: Rupi Prasad
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support