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

被引：20

作者：

Zahrani, E. Mohammadi ^{[1
]}

Alfantazi, A. M. ^{[2
]}

机构：

[1] Ferdowsi Univ Mashhad, Fac Engn, Dept Met & Mat Engn, Mashhad 917751111, Razavi Khorasan, Iran

[2] Khalifa Univ Sci & Technol, Dept Chem Engn, POB 2533, Abu Dhabi, U Arab Emirates

来源：

CORROSION SCIENCE | 2021年 / 183卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

C; Welding; Hot corrosion; A; Molten salts; Superalloys; B; EIS; SEM; HIGH-TEMPERATURE CORROSION; ELECTROCHEMICAL-BEHAVIOR; OXIDE-FILMS; SOLIDIFICATION; ENVIRONMENT; SUPERALLOYS; RESISTANCE; COATINGS; FE; CR;

D O I：

10.1016/j.corsci.2021.109348

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 ?m in thickness. Anodic and cathodic reactions on polarized working electrodes were under mass-transfer control.

引用

页数：19

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