High-temperature corrosion resistance of weld overlay In625 coating in aggressive environments of waste incinerators

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-03-13 DOI:10.1016/j.corsci.2025.112865

Haiyan Li, Huan Liu, Jianquan Li, Hong Yao

引用次数: 0

Abstract

Corrosion resistance and mechanism of Inconel625 at 500–700 °C in high-parameter waste incinerators were investigated. In the deposit-corrosion condition, Cr/Mo in the coating would be dissolved, producing soluble products such as Na₂CrO₄/Na₂MoO₄. At 600/700°C, the risk of Cr loss in the form of CrO₄^2- was increased from ∼30 % to ∼70 %. While in coupling corrosion environment (with HCl/SO₂), chlorides of Ni/Fe were dominant in the soluble corrosion products due to the high partial pressure of Cl₂. Though the corrosion rate was significantly accelerated during coupling corrosion, Inconel625 could form protective bilayer oxides and maintain its corrosion resistance in both conditions.

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.