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The influence of rare earth mercaptoacetate on the initiation of corrosion on AA2024-T3 Part I: average statistics of each intermetallic composition
journal contribution
posted on 2015-01-01, 00:00 authored by Rainier Catubig, A E Hughes, I S Cole, F F Chen, C M MacRae, N C Wilson, A M Glenn, Bruce HintonBruce Hinton, Maria ForsythMaria ForsythDe-alloying of S-phase in AA2024-T3 in the presence chlorides, is well-known. However, it is unclear how rare earth mercaptoacetate inhibitors affect this process when immersed in a 0.1. M NaCl solution. This paper analyses data obtained using EPMA on AA2024-T3 surfaces before and after a 16. min immersion period. Cerium and praseodymium mercaptoacetate inhibited the de-alloying process of S-phase particles. Although no significant change in composition was observed for cathodic intermetallics, each appeared to participate in local corrosion reactions as evidenced by the development of surface oxides. Clustering between S-phase and one of the Cu-containing intermetallic domains was also evident.
History
Journal
Corrosion scienceVolume
95Pagination
22 - 39Publisher
ElsevierLocation
Amsterdam, The NetherlandsPublisher DOI
ISSN
0010-938XLanguage
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2015, ElsevierUsage metrics
Keywords
A. AlloyA. AluminiumA. Rare earth elementsB. EPMAC. Neutral inhibitionScience & TechnologyTechnologyMaterials Science, MultidisciplinaryMetallurgy & Metallurgical EngineeringMaterials ScienceAlloyAluminiumRare earth elementsEPMANeutral inhibitionLASER-SCANNING MICROSCOPYLOCALIZED CORROSIONALUMINUM-ALLOYSINHIBITORSCERIUMCATHODOLUMINESCENCEMICROSTRUCTUREPROTECTIONCINNAMATEMETROLOGYMechanical Engineering
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