INVESTIGATION ON HIGH-TEMPERATURE CORROSION BEHAVIOR OF INCONEL 600 UNDER SO2-BEARING GAS AT 650°C

Kwang-Hu Jung and Seong-Jong Kim
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Kwang-Hu Jung: Division of Marine Engineering, Mokpo Maritime University, 91 Haeyangdaehak–ro, Mokpo 58628, South Korea
Seong-Jong Kim: Division of Marine Engineering, Mokpo Maritime University, 91 Haeyangdaehak–ro, Mokpo 58628, South Korea

Surface Review and Letters (SRL), 2020, vol. 27, issue 06, 1-8

Abstract: The corrosion characteristics of Inconel 600 were investigated at 650∘C in air and 76%N2+6%O2+16%CO2+2%SO2 gas environment up to 500h. Specimens exposed to each condition were characterized by weight gain, scanning electron microscope, energy dispersive X-ray spectroscopy and X-ray diffraction. The oxide structure consisting of the thin Cr2O3 layer and Cr2O3 nodules was observed, which increased the weight gain of specimens. In the SO2-bearing gas, it showed a bigger weight gain due to the coarsening of Cr2O3 nodules. Therefore, it was suggested that the sulfur-accelerated coarsening of Cr2O3 nodules at the high temperature.

Keywords: Inconel 600; high temperature; SO2-bearing gas; corrosion characteristics (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1142/S0218625X19501555

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