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Corrosion behavior of GeO2 and Sc2O3 Coatings on AZ31 Alloy
- Source :
- Oriental Journal Of Chemistry. 37:433-439
- Publication Year :
- 2021
- Publisher :
- Oriental Scientific Publishing Company, 2021.
-
Abstract
- In this work, GeO2 (germanium dioxide) and Sc2O3 (scandium trioxide) were developed as coatings on AZ31 alloy using polymer binder. The coatings were characterized using X-ray crystallography procedure (XRD), infrared spectrum of absorption or emission of a solid procedure (FTIR), Raman spectroscopy procedure, surface examination by FESEM. The corrosion studies were analyzed using a three electrode system in 3.5% NaCl electrolyte. The bare AZ31 alloy showed open circuit potential (Ecorr) of -1.7 V (SCE) and the corrosion current density (icorr) of 3.4 x 10-4 mA/cm2, while the Sc2O3 coated AZ31 alloy exhibited Ecorr of -1.4 V (SCE) and the icorr of 5.4 x 10-9 mA/cm2 and while the GeO2 coated AZ31 alloy exhibited Ecorr of -1.3 V (SCE) and the icorr of 2.59 x 10-9 mA/cm2. The results reveal that the GeO2 coated AZ31 alloy demonstrated higher corrosion resistance than of bare AZ31 alloy and Sc2O3 coated AZ31 alloy.
- Subjects :
- Chemistry
020209 energy
Metallurgy
Ornamental horticulture
Industrial chemistry
02 engineering and technology
General Chemistry
021001 nanoscience & nanotechnology
Biochemistry
AZ31 alloy
Elsevier Biobase
Drug Discovery
0202 electrical engineering, electronic engineering, information engineering
Environmental Chemistry
0210 nano-technology
Corrosion behavior
Material chemistry
Subjects
Details
- ISSN :
- 22315039 and 0970020X
- Volume :
- 37
- Database :
- OpenAIRE
- Journal :
- Oriental Journal Of Chemistry
- Accession number :
- edsair.doi...........23a8495511adae68d72779242664ad46