Badaruddin, Mohammad and Risano, A.Yudi Eka and Wardono, Herry and Asmi, Dwi (2016) Hot-corrosion of AISI 1020 steel in a molten NaCl/Na2SO4 eutectic at 700°C. American Institute of Physics, International Conference on Engineering, Science and Nanotechnology 2016 (ICESNANO 2016), AIP Conference Proceedings.


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Hot-corrosion behavior and morphological development of AISI 1020 steel with 2 mg cm−2 mixtures of various NaCl/Na2SO4 ratios at 700°C were investigated by means of weight gain measurements, Optical Microscope (OM), X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS). The weight gain kinetics of the steel with mixtures of salt deposits display a rapid growth rates, compared with the weight gain kinetics of AISI 1020 steel without salt deposit in dry air oxidation, and follow a steady-state parabolic law for 49 h. Chloridation and sulfidation produced by a molten NaCl/Na2SO4 on the steel induced hot-corrosion mechanism attack, and are responsible for the formation of thicker scale. The most severe corrosion takes place with the 70 wt.% NaCl mixtures in Na2SO4. The typical Fe2O3 whisker growth in outer part scale was attributed to the FeCl3 volatilization. The formation of FeS in the innermost scale is more pronounced as the content of Na2SO4 in the mixture is increased.

Item Type: Other
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Fakultas Teknik (FT) > Prodi Teknik Mesin
Depositing User: A YUDI EKA RISANO
Date Deposited: 26 Mar 2021 03:16
Last Modified: 26 Mar 2021 03:16

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