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Development and performance of hybrid coatings on aluminium alloy
- Source :
- Journal of Electrochemical Science and Engineering, Vol 7, Iss 3 (2017)
- Publication Year :
- 2017
- Publisher :
- International Association of Physical Chemists (IAPC), 2017.
-
Abstract
- From gravimetric studies, hybrid nano-coatings, based on permanganate/fluo­ride/gly­cerol conversion coating solutions formed on aluminum alloy by immersion procedures developed rapidly at a rate which decreased with time of treatment and was about 16 mg in weight after a period of three minutes. The morphology of the coating during scanning electron microscopic (SEM) examinations revealed randomly shaped coating materials with mud cracking patterns, characteristics of dried out coatings derived from gel-like materials. Analyses of the coating using EDX attachment in the SEM showed that it was composed essentially of aluminum, oxygen and manganese compounds, probably hydrated. The corrosion resistance of the coating out-performed ‘bare’ aluminum alloy specimens exposed to natural environment and 1 M sodium chloride solution. The coating improved the paint adhesion characteristics of the substrate aluminum alloy.
- Subjects :
- adhesion
SEM/EDX
permanganate
glycerol
morphology
pitting
Chemistry
QD1-999
Subjects
Details
- Language :
- English
- ISSN :
- 18479286
- Volume :
- 7
- Issue :
- 3
- Database :
- Directory of Open Access Journals
- Journal :
- Journal of Electrochemical Science and Engineering
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.5b8413c6c442dab09ba06f5ca0a87
- Document Type :
- article
- Full Text :
- https://doi.org/10.5599/jese.347