Menu
Search
Filters
Close
Menu

Save 20% on select titles with code HIDDEN24 - Shop The Sale Now

00459 CHARACTERIZATION OF THE ATMOSPHERIC CORROSION PRODUCTS FORMED ON MODIFIED Zn-Al EUTECTOID ALLOY

Picture for 00459 CHARACTERIZATION OF THE ATMOSPHERIC
Available for download
Product Number: 51300-00459-SG
ISBN: 00459 2000 CP
Author: L.S. Hernandez, J.M. Miranda, O. Dominguez
$0.00
$20.00
$20.00
The atmospheric corrosion of the Zn-2 lwt%AI-2wt%Cu (Zn-21AI-2Cu) alloy exposed to an urban atmosphere was investigated after different outdoor exposition periods. The corrosion rate, determined by weight loss, was slightly higher for the ternary alloy than that for zinc and very superior to the one measured with aluminum. The results of the electrochemical methods used, such as corrosion potential, polarization resistance (Rp), potentiostatic and potentiodynamic polarizations, demonstrated a greater corrosion resistance of the surveyed materials as a consequence of the presence of corrosion product layers on the metallic surface, This greater corrosion resistance increased with the outdoor exposure time. However, in a direct comparison between both types of methods, the Rp values showed results that are contrary to those obtained by weight loss. Through scanning electron an exfoliation or layer corrosion was detected in the ternary alloy, which had not been reported up to now in these alloys with relatively low aluminum contents. By means of x-rays diffraction the compounds present in the corrosion products for the ternary alloy (essentially water-soluble sulfates) could be identified whether those present on zinc and aluminum could not.

KEY WORDS: ahiminmn, atmospheric corrosion, corrosion products, galvanized steel, polarization resislance, scanning electron microscopy, sulfi~r dioxide, urban environment, x-ray diffraction, zinc-aluminum-copper alloys
The atmospheric corrosion of the Zn-2 lwt%AI-2wt%Cu (Zn-21AI-2Cu) alloy exposed to an urban atmosphere was investigated after different outdoor exposition periods. The corrosion rate, determined by weight loss, was slightly higher for the ternary alloy than that for zinc and very superior to the one measured with aluminum. The results of the electrochemical methods used, such as corrosion potential, polarization resistance (Rp), potentiostatic and potentiodynamic polarizations, demonstrated a greater corrosion resistance of the surveyed materials as a consequence of the presence of corrosion product layers on the metallic surface, This greater corrosion resistance increased with the outdoor exposure time. However, in a direct comparison between both types of methods, the Rp values showed results that are contrary to those obtained by weight loss. Through scanning electron an exfoliation or layer corrosion was detected in the ternary alloy, which had not been reported up to now in these alloys with relatively low aluminum contents. By means of x-rays diffraction the compounds present in the corrosion products for the ternary alloy (essentially water-soluble sulfates) could be identified whether those present on zinc and aluminum could not.

KEY WORDS: ahiminmn, atmospheric corrosion, corrosion products, galvanized steel, polarization resislance, scanning electron microscopy, sulfi~r dioxide, urban environment, x-ray diffraction, zinc-aluminum-copper alloys
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for 00457 The Influence of Iron Contamination on the
Available for download

00457 The Influence of Iron Contamination on the Corrosion Resistance of Several Stainless Steels

Product Number: 51300-00457-SG
ISBN: 00457 2000 CP
Author: J. D. Fritz, J. F. Grubb, B. W. Parks Jr., R. M. Kain, & S. J. Pikul
$20.00
Picture for 00455 COMPARISON OF THE ATMOSPHERIC CORROSION
Available for download

00455 COMPARISON OF THE ATMOSPHERIC CORROSION RATES OF WIRES AND FLAT PANELS

Product Number: 51300-00455-SG
ISBN: 00455 2000 CP
Author: Sheldon W. Dean, David B. Reiser
$20.00
Picture for 00452 Precipitation Runoff and Atmospheric
Available for download

00452 Precipitation Runoff and Atmospheric Corrosion

Product Number: 51300-00452-SG
ISBN: 00452 2000 CP
Author: S. D. Cramer, S. A. Matthes, G. R. Holcomb, B. S. Covino, Jr., and S. J. Bullard
$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