Open AccessElectrochemical Behavior of Plasma-Sprayed Stainless Steel
Author(s) -
B. Anushraj,
J.T. Winowlin Jappes,
Adam Khan M,
V. Dillibabu,
N.C. Brintha
Publication year - 2019
Publication title -
international journal of engineering and advanced technology
Language(s) - English
Resource type - Journals
ISSN - 2249-8958
DOI - 10.35940/ijeat.a1064.1291s419
Subject(s) - materials science , nichrome , intergranular corrosion , corrosion , metallurgy , electrochemistry , polarization (electrochemistry) , scanning electron microscope , pitting corrosion , coating , energy dispersive x ray spectroscopy , composite material , electrode , chemistry
The effect of electrochemical behavior of plasma sprayed NiCr–Cr2O3 (80:20) and Al2O3– 40% TiO2 as coating on stainless steel 316L were investigated. The polarization studies were carried out in 1.0M H2SO4 and 3.5% NaCl solution as a corrosive medium. The corrosion potential is more positive in the coated sample and gives good corrosion resistance when compared to bare sample. The surface characterization studies were carried out through electron microscope attached with energy dispersive spectroscopy. It was found that intergranular attack and pitting corrosion takes place in the sample exposed in 1.0M H2SO4 and large crater was found in the sample exposed in 3.5% NaCl solution.