Hot corrosion of Inconel 625 wrought alloy and weld overlay on carbon steel by gas metal arc welding in 47 PbSO4-23 ZnO-13 Pb3O4-7 PbCl2-5 CdO-5 Fe2O3 molten salt mixture

E. Mohammadi Zahrani; A. M. Alfantazi

doi:10.1016/j.corsci.2021.109348

Hot corrosion of Inconel 625 wrought alloy and weld overlay on carbon steel by gas metal arc welding in 47 PbSO₄-23 ZnO-13 Pb₃O₄-7 PbCl₂-5 CdO-5 Fe₂O₃ molten salt mixture

E. Mohammadi Zahrani
, A. M. Alfantazi

Chemical and Petroleum Engineering

Ferdowsi University of Mashhad

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

The hot corrosion resistance of the wrought alloy 625 and the alloy 625 GMAW cladding was investigated in the molten salt mixture of 47 PbSO₄-23 ZnO-13 Pb₃O₄-7 PbCl₂-x CdO-(10-x) Fe₂O₃ [x = 5] (wt.%) at 600, 700, and 800 °C, utilizing EIS, OCP, potentiodynamic polarization, weight-loss measurement, SEM/EDX, ICP/AAS, and XRD techniques. At 600 °C, the hot corrosion resistance of the wrought alloy 625 outperformed the alloy 625 weld cladding due to the formation of a (Cr, Ni, O)-rich layer with 2.2 ± 1.3 μm in thickness. Anodic and cathodic reactions on polarized working electrodes were under mass-transfer control.

Original language	British English
Article number	109348
Journal	Corrosion Science
Volume	183
DOIs	https://doi.org/10.1016/j.corsci.2021.109348
State	Published - 1 May 2021

Keywords

A. Molten salts
A. Superalloys
B. EIS
B. SEM
C. Hot corrosion
C. Welding

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10.1016/j.corsci.2021.109348

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title = "Hot corrosion of Inconel 625 wrought alloy and weld overlay on carbon steel by gas metal arc welding in 47 PbSO4-23 ZnO-13 Pb3O4-7 PbCl2-5 CdO-5 Fe2O3 molten salt mixture",

abstract = "The hot corrosion resistance of the wrought alloy 625 and the alloy 625 GMAW cladding was investigated in the molten salt mixture of 47 PbSO4-23 ZnO-13 Pb3O4-7 PbCl2-x CdO-(10-x) Fe2O3 [x = 5] (wt.\%) at 600, 700, and 800 °C, utilizing EIS, OCP, potentiodynamic polarization, weight-loss measurement, SEM/EDX, ICP/AAS, and XRD techniques. At 600 °C, the hot corrosion resistance of the wrought alloy 625 outperformed the alloy 625 weld cladding due to the formation of a (Cr, Ni, O)-rich layer with 2.2 ± 1.3 μm in thickness. Anodic and cathodic reactions on polarized working electrodes were under mass-transfer control.",

keywords = "A. Molten salts, A. Superalloys, B. EIS, B. SEM, C. Hot corrosion, C. Welding",

author = "\{Mohammadi Zahrani\}, E. and Alfantazi, \{A. M.\}",

note = "Funding Information: Financial support from the Natural Sciences and Engineering Research Council of Canada (NSERC) and Teck Metals Ltd. is gratefully acknowledged. The first author (Dr. Ehsan Mohammadi Zahrani) would like to express his gratitude towards NSERC for providing the prestigious Vanier Canada Graduate Scholarship, and the University of British Columbia (UBC) for providing the Killam Doctoral Fellowship and the Four Years Doctoral Fellowship, and the Metallurgy and Materials Society (MetSoc) of the Canadian Institute of Mining, Metallurgy, and Petroleum (CIM) for providing the MetSoc Doctoral Scholarship to him for a Ph.D. program at the University of British Columbia in Canada. Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

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