Comparative study on corrosion behavior of plasma sprayed Al2O3, ZrO2, Al2O3/ZrO2 and ZrO2/Al2O3 coatings

被引：35
|
作者：
Sathish, S. [1 ]
Geetha, M. [2 ]
机构：
[1] Aalim Muhammed Salegh Coll Engn, Dept Mech Engn, Madras 600055, Tamil Nadu, India
[2] VIT Univ, Sch Mech & Bldg Sci, Vellore 632014, Tamil Nadu, India
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2016年 / 26卷 / 05期
关键词：
bilayered coating; Al2O3; ZrO2; atmospheric plasma spraying; corrosion; OXIDATION RESISTANCE; WEAR BEHAVIOR; MICROSTRUCTURE; ALUMINA; LAYER;
D O I：
10.1016/S1003-6326(16)64236-X
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
ZrO2, Al2O3, ZrO2/Al2O3 and Al2O3/ZrO2 coatings were fabricated on low carbon steel using atmospheric plasma spraying technique. The microstructure and phase composition of the as-sprayed coatings were examined by scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. The polarization test, salt spray test and immersion test were used to investigate the corrosion behavior of the coatings in 3.5% NaCl solution. The results suggested that the bilayered Al2O3/ZrO2 coating exhibits superior corrosion resistance when compared with the other coatings. This is ascribed to the presence of very few interconnected pores and stable phases in the coating.
引用
收藏
页码：1336 / 1344
页数：9
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