Hot corrosion studies on fully austenitic stainless steel in air oxidation and simulated waste heat incinerator environment at 600 °C, 650 °C and 700 °C
The purpose of the current study is to compare the hot corrosion performance of SMO 254 exposed to air oxidation and molten salt with a eutectic mixture of 40 wt% Na2SO4 + 40 wt% K2SO4 + 10 wt% NaCl + 10 wt% KCl at 600 °C, 650 °C and 700 °C under cyclic conditions for 50 h period. Kinetics of corros...
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Published in | Materials research express Vol. 6; no. 12; pp. 1265 - 1276 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
IOP Publishing
06.01.2020
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Subjects | |
Online Access | Get full text |
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Summary: | The purpose of the current study is to compare the hot corrosion performance of SMO 254 exposed to air oxidation and molten salt with a eutectic mixture of 40 wt% Na2SO4 + 40 wt% K2SO4 + 10 wt% NaCl + 10 wt% KCl at 600 °C, 650 °C and 700 °C under cyclic conditions for 50 h period. Kinetics of corrosion were analyzed by thermogravimetric method. By using SEM/EDS, the hot corroded specimens were investigated for surface scales and cross-sectional elemental analysis by point, line mapping methods. An accelerated rate of corrosion rate was noticed in the specimen exposed to molten salt at 700 °C, and the lowest rate of corrosion rate was observed in the specimen subjected to air oxidation at 600 °C. XRD analysis is done to analyze the corrosion products in the oxide scale. |
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Bibliography: | MRX-118659.R2 |
ISSN: | 2053-1591 2053-1591 |
DOI: | 10.1088/2053-1591/ab61ab |