High-temperature corrosion of weld overlay coating/bulk FeCrAl exposed in O2+H2O+KCl(s) at 600 °C- A microstructural investigation

被引：2

作者：

Hanif, Imran ^{[1
,3
]}

Ssenteza, Vicent ^{[1
]}

Eklund, Johan ^{[1
]}

Olovsjo, Johanna Nockert ^{[2
]}

Jonsson, Torbjorn ^{[1
]}

机构：

[1] Chalmers Univ Technol, Dept Chem & Chem Engn, Environm Inorgan Chem, SE-41296 Gothenburg, Sweden

[2] Kanthal AB, Hallstahammar, Sweden

[3] RISE Res Inst Sweden, Energy Technol Ctr, Gothenburg, Sweden

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2023年 / 25卷

关键词：

FeCrAl; Weld overlay coating; High -temperature corrosion; Dilution; TEM; STEM-EDX; AUSTENITIC STAINLESS-STEEL; ALLOY KANTHAL AF; OXIDATION; DILUTION; CHROMIA; O-2; DIFFUSION; BEHAVIOR; DIOXIDE; NICKEL;

D O I：

10.1016/j.jmrt.2023.07.073

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work investigates the impact of high-temperature corrosion behavior of the newly developed FeCrAl alloy Kanthal & REG; EF101 bulk material and weld overlay coating in the presence of KCl(g)/KCl(s) at 600 & DEG;C. The oxide scale formed within the secondary corrosion regime after exposure and the impact of alloy microstructure on corrosion behavior was investigated using scanning transmission electron microscopy. The findings indicated the key microstructural differences is the alloy grain size which influences the formation of a protective scale. In addition, It is indicated that coating exhibited inferior performance than the bulk material, primarily attributed to the microstructural differences.& COPY; 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

引用

页码：7008 / 7023

页数：16

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