Corrosion behavior of GeO2 and Sc2O3 Coatings on AZ31 Alloy

被引：4
作者：
Sutha, L. [1 ,2 ]
Cyril, A. [2 ]
机构：
[1] Alagappa Univ, Dept Ind Chem, Karaikkudi, Tamil Nadu, India
[2] Raja Doraisingam Govt Arts Coll, Dept Chem, Sivaganga, Tamil Nadu, India
来源：
ORIENTAL JOURNAL OF CHEMISTRY | 2021年 / 37卷 / 02期
关键词：
Mg alloys; AZ31; GeO2; Sc2O3; Corrosion; MAGNESIUM ALLOY; RESISTANCE; MICROSTRUCTURE; TEMPERATURE; STABILITY; COMPOSITE; AZ91;
D O I：
10.13005/ojc/370224
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
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 (E-corr) of -1.7 V (SCE) and the corrosion current density (i(corr)) of 3.4 x 10(-4) mA/cm(2), while the Sc2O3 coated AZ31 alloy exhibited E-corr of -1.4 V (SCE) and the icorr of 5.4 x 10(-9) mA/cm(2) and while the GeO2 coated AZ31 alloy exhibited E-corr of -1.3 V (SCE) and the icorr of 2.59 x 10(-9) mA/cm(2). The results reveal that the GeO2 coated AZ31 alloy demonstrated higher corrosion resistance than of bare AZ31 alloy and Sc2O3 coated AZ31 alloy.
引用
收藏
页码：433 / 439
页数：7
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