Menu
Search
Filters
Close
Menu

03600 EFFECT OF CLIMATIC PARAMETERS ON FILIFORM CORROSION OF COATED ALUMINIUM ALLOYS AA6016

Picture for 03600 EFFECT OF CLIMATIC PARAMETERS ON FILIFORM
Available for download
Product Number: 51300-03600-SG
ISBN: 03600 2003 CP
Author: N. LeBozec, D. Persson, D. Thierry, S. B. Axelsen
$0.00
$20.00
$20.00
The effects of temperature, relative humidity and wet dry transition on initiation and propagation of filiform corrosion on coated aluminium alloys AA6016 have been studied. The aluminium surfaces were tested in both milled and grinded conditions with chromium, phosphate and titanium-zirconium based pretreatment. A full paint system used for automotive applications (ED coat + top-coat) and an electrodeposited coat (ED coat) were investigated for the different combinations of mechanical finish, surface pretreatment and coating system. In the temperature range between 5 to 50°C, filiform corrosion, or underfilm corrosion in general, increased significantly. The effect of relative humidity and wet-dry cycling on the other hand, seems to be strongly influenced by parameters like pretreatment, coating system, and also temperature. Filiform corrosion was the highest in the range 75 to 95% relative humidity and a distinct maximum was observed at 85% R.H. for some coating systems. However, filiform corrosion propagated at humidity down to 40-50% R.H. For specimens with chromate and phosphate based surface pretreatments, filiform corrosion was lower after exposure to tests with wet-dry cycles. The samples with titanium-zirconium based pretreatments, on the other hand, had a very poor filiform corrosion resistance in the cyclic test compared to exposures at constant relative humidity. Key Words: Filiform corrosion, aluminium alloys, temperature, climatic parameters, coatings, pretreatments
The effects of temperature, relative humidity and wet dry transition on initiation and propagation of filiform corrosion on coated aluminium alloys AA6016 have been studied. The aluminium surfaces were tested in both milled and grinded conditions with chromium, phosphate and titanium-zirconium based pretreatment. A full paint system used for automotive applications (ED coat + top-coat) and an electrodeposited coat (ED coat) were investigated for the different combinations of mechanical finish, surface pretreatment and coating system. In the temperature range between 5 to 50°C, filiform corrosion, or underfilm corrosion in general, increased significantly. The effect of relative humidity and wet-dry cycling on the other hand, seems to be strongly influenced by parameters like pretreatment, coating system, and also temperature. Filiform corrosion was the highest in the range 75 to 95% relative humidity and a distinct maximum was observed at 85% R.H. for some coating systems. However, filiform corrosion propagated at humidity down to 40-50% R.H. For specimens with chromate and phosphate based surface pretreatments, filiform corrosion was lower after exposure to tests with wet-dry cycles. The samples with titanium-zirconium based pretreatments, on the other hand, had a very poor filiform corrosion resistance in the cyclic test compared to exposures at constant relative humidity. Key Words: Filiform corrosion, aluminium alloys, temperature, climatic parameters, coatings, pretreatments
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for 03601 ATMOSPHERIC CORROSION OF MAGNESIUM ALLOYS:
Available for download

03601 ATMOSPHERIC CORROSION OF MAGNESIUM ALLOYS: INFLUENCE OF TEMPERATURE, RELATIVE HUMIDITY AND CHLORIDE DEPOSITION

Product Number: 51300-03601-SG
ISBN: 03601 2003 CP
Author: N. LeBozec, M. Jönsson, D. Thierry
$20.00
Picture for 01550 ORGANIC-INORGANIC HYBRID COATINGS
Available for download

01550 ORGANIC-INORGANIC HYBRID COATINGS AS CORROSION INHIBITING SURFACE TREATMENTS FOR ALUMINUM ALLOYS

Product Number: 51300-01550-SG
ISBN: 01550 2001 CP
Author: T. L. Metroke, E. Stesikova, O. Kachurina, and E. T. Knobbe
$20.00
Picture for 03593 A STUDY OF ATMOSPHERIC CORROSION
Available for download

03593 A STUDY OF ATMOSPHERIC CORROSION OF COILED TUBING AND ITS INHIBITION

Product Number: 51300-03593-SG
ISBN: 03593 2003 CP
Author: J. W. Still, R. Rolovic
$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