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

00287 IMPACT OF TRIVALENT CHROMIUM CONVERSION LAYERS AND HYBRID SILICATE COATINGS ON CORROSION RESISTANCE OF ALUMINUM ALLOYS

Picture for 00287 IMPACT OF TRIVALENT CHROMIUM CONVERSION
Available for download
Product Number: 51300-00287-SG
ISBN: 00287 2000 CP
Author: Elvira Stesikova, Tammy L. Metroke, Perry L. Reed, Vinod S. Agarwala and Edward T. Knobbe
$0.00
$20.00
$20.00
Trivalent chromium conversion coatings have been deposited onto aluminum 2024-T3 alloy by immersion into or by spraying on a solution of chromic sulfate and hexafluorozirconate for periods of time varying from 3 minutes to 5 days. This treatment was followed by the deposition of hybrid silicate materials containing different organic modifiers [vinyl, methacrylate, epoxide functionalities and poly(2-ethyl-2-oxazoline)] to produce composite coatings. Aluminum alloys coated with the composite films, as well as single-layer coated aluminum alloys, i.e. coated with the conversion coating or the silicate film, were tested by a 168-hour salt spray technique. Significantly better corrosion resistance was observed for composite films, which exhibit significantly less localized pits and corrosion areas, as compared to the single-layer coated aluminum alloys. The effect oftrivalent chromium treatment and its duration, as well as the silicate composition and synthesis conditions on corrosion resistance of the resultant coatings are discussed. Keywords: trivalent chromium conversion coating, AI 2024-T3 alloy, sol-gel, hybrid organic modified silicate (ORMOSIL) coating, silanes, corrosion resistance, salt spray testing.
Trivalent chromium conversion coatings have been deposited onto aluminum 2024-T3 alloy by immersion into or by spraying on a solution of chromic sulfate and hexafluorozirconate for periods of time varying from 3 minutes to 5 days. This treatment was followed by the deposition of hybrid silicate materials containing different organic modifiers [vinyl, methacrylate, epoxide functionalities and poly(2-ethyl-2-oxazoline)] to produce composite coatings. Aluminum alloys coated with the composite films, as well as single-layer coated aluminum alloys, i.e. coated with the conversion coating or the silicate film, were tested by a 168-hour salt spray technique. Significantly better corrosion resistance was observed for composite films, which exhibit significantly less localized pits and corrosion areas, as compared to the single-layer coated aluminum alloys. The effect oftrivalent chromium treatment and its duration, as well as the silicate composition and synthesis conditions on corrosion resistance of the resultant coatings are discussed. Keywords: trivalent chromium conversion coating, AI 2024-T3 alloy, sol-gel, hybrid organic modified silicate (ORMOSIL) coating, silanes, corrosion resistance, salt spray testing.
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for 00284 Evaluation of Cr(VI) Concentration Effects
Available for download

00284 Evaluation of Cr(VI) Concentration Effects on Aluminum Alloys in the Presence of Oxoanions

Product Number: 51300-00284-SG
ISBN: 00284 2000 CP
Author: Kunigahalli L. Vasanth, Gautam Banerjee, Albert E. Miller , Jeffrey Sarnat, Mohan Pujar, and Charles
$20.00
Picture for 00293 DEVELOPMENT OFINDUCTIVE IMAGING
Available for download

00293 DEVELOPMENT OFINDUCTIVE IMAGING OFCORROSION DAMAGED REINFORCED AND PRESTRESSED CONCRETE STRUCTURES

Product Number: 51300-00293-SG
ISBN: 00293 2000 CP
Author: Gareth John, Patrick Gaydecki, Bosco Fernandes and Isaac Silva
$20.00
Picture for 00297 A FIBER OPTIC SENSOR FOR DETECTION
Available for download

00297 A FIBER OPTIC SENSOR FOR DETECTION OF DEGRADATION IN AIRCRAFT LAP JOINTS

Product Number: 51300-00297-SG
ISBN: 00297 2000 CP
Author: N. Lagakos, H. N. Jones, S. G. Lambrakos, and P. P. Trzaskoma-Paulette
$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