Exfoliation Corrosion Testing of 7075 and 7178 Aluminum Alloys—Interim Report on Atmospheric Exposure Tests

2009 ◽  
pp. 99-99-15 ◽  
Author(s):  
DO Sprolws ◽  
TJ Summerson ◽  
FE Loftin
Keyword(s):  
Aluminum Alloys ◽  
Corrosion Testing ◽  
Interim Report ◽  
Exfoliation Corrosion ◽  
Atmospheric Exposure

Composition for the protection of aluminum alloys against exfoliation corrosion

1992 ◽  
Vol 28 (10) ◽  
pp. 581-582
Author(s):  
V. B. Skribachilin ◽  
T. E. Yampol'skaya ◽  
G. V. Matyusha ◽  
I. A. Timokhin ◽  
S. A. Kalinovskii
Keyword(s):  
Aluminum Alloys ◽  
Exfoliation Corrosion

Improved Atmospheric Corrosion Testing for Aluminum Alloys, Part II: Developing Improved Testing Protocol

CORROSION ◽  
10.5006/3335 ◽  
2019 ◽  
Vol 76 (1) ◽  
pp. 51-62
Author(s):  
Mary E. Parker ◽  
Robert G. Kelly
Keyword(s):  
Aluminum Alloys ◽  
Atmospheric Corrosion ◽  
Salt Spray ◽  
High Strength ◽  
Corrosion Testing ◽  
Short Exposure ◽  
Wetting And Drying ◽  
Short Exposure Time ◽  
High Strength Aluminum Alloys ◽  
Dwell Period

A modified version of ASTM G85-A2 was developed in this work with the intention of targeting a relative humidity (RH) of 75% during the dwell period. The outcome was two different RH profiles, one that averaged 74% RH during the dwell period and another that averaged 61.5% RH during the dwell period. Both tests produced moderate exfoliation in AA2060-T3 after just 12 days of exposure. Other high-strength aluminum alloys (AA7075, AA2024) were exposed to the modified RH profiles, and both tests could correctly differentiate exfoliation resistance for these alloys. An average RH between 74% and 61.5% during the dwell period was found to produce consistent exfoliation ratings after a short exposure time. Electrochemical measurements made during salt spray testing were used to propose electrochemical mechanisms that occur during wetting and drying in atmospheric corrosion testing.

Exfoliation corrosion of aluminum alloys II. Protection methods, their effectiveness and improvement

2000 ◽  
Vol 36 (4) ◽  
pp. 397-407
Author(s):  
A. A. Gerasimenko ◽  
T. E. Yampol’skaya
Keyword(s):  
Aluminum Alloys ◽  
Exfoliation Corrosion
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