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.
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收藏
页码：1336 / 1344
页数：9
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