Effect of Cu addition on high-temperature oxidation behavior of 25Cr–20Ni austenitic stainless steel

Gunjick Lee; Heechan Jung; Yoon Seok Ko; Dong Ik Kim; Seok Su Sohn; Jae Hyeok Shim

doi:10.1016/j.jmrt.2025.02.134

Effect of Cu addition on high-temperature oxidation behavior of 25Cr–20Ni austenitic stainless steel

Gunjick Lee
, Heechan Jung
, Yoon Seok Ko
, Dong Ik Kim
, Seok Su Sohn^*
, Jae Hyeok Shim^*

^*Corresponding author for this work

Department of Materials Science and Engineering

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

5 Citations (Scopus)

Abstract

The effect of Cu addition on the air oxidation behavior of 25Cr–20Ni austenitic stainless steels was investigated at 700 °C. The steel with Cu exhibited larger weight gain and greater oxide layer thickness than the steel without Cu. The transmission Kikuchi diffraction analysis results clearly indicated that the surface oxide scales consist of three distinct oxide phase layers in both steels. The overall oxide layer sequence was consistent with thermodynamic calculations; outermost Fe-rich corundum oxide, intermediate spinel oxide and inner Cr-rich corundum oxide layers. It seems that the presence of Cu increases the outward diffusion rate of alloying elements in both matrix and oxide layers during oxidation, eventually enhancing oxidation kinetics.

Original language	English
Pages (from-to)	4543-4552
Number of pages	10
Journal	Journal of Materials Research and Technology
Volume	35
DOIs	https://doi.org/10.1016/j.jmrt.2025.02.134
Publication status	Published - 2025 Mar 1

Bibliographical note

Publisher Copyright:
© 2025

Keywords

Austenitic stainless steel
Corundum oxide
Oxidation
Oxide layer
Spinel oxide
Transmission kikuchi diffraction

ASJC Scopus subject areas

Ceramics and Composites
Biomaterials
Surfaces, Coatings and Films
Metals and Alloys

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10.1016/j.jmrt.2025.02.134

Cite this

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title = "Effect of Cu addition on high-temperature oxidation behavior of 25Cr{\textendash}20Ni austenitic stainless steel",

abstract = "The effect of Cu addition on the air oxidation behavior of 25Cr{\textendash}20Ni austenitic stainless steels was investigated at 700 °C. The steel with Cu exhibited larger weight gain and greater oxide layer thickness than the steel without Cu. The transmission Kikuchi diffraction analysis results clearly indicated that the surface oxide scales consist of three distinct oxide phase layers in both steels. The overall oxide layer sequence was consistent with thermodynamic calculations; outermost Fe-rich corundum oxide, intermediate spinel oxide and inner Cr-rich corundum oxide layers. It seems that the presence of Cu increases the outward diffusion rate of alloying elements in both matrix and oxide layers during oxidation, eventually enhancing oxidation kinetics.",

keywords = "Austenitic stainless steel, Corundum oxide, Oxidation, Oxide layer, Spinel oxide, Transmission kikuchi diffraction",

author = "Gunjick Lee and Heechan Jung and Ko, \{Yoon Seok\} and Kim, \{Dong Ik\} and Sohn, \{Seok Su\} and Shim, \{Jae Hyeok\}",

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year = "2025",

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day = "1",

doi = "10.1016/j.jmrt.2025.02.134",

language = "English",

volume = "35",

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TY - JOUR

T1 - Effect of Cu addition on high-temperature oxidation behavior of 25Cr–20Ni austenitic stainless steel

AU - Lee, Gunjick

AU - Jung, Heechan

AU - Ko, Yoon Seok

AU - Kim, Dong Ik

AU - Sohn, Seok Su

AU - Shim, Jae Hyeok

PY - 2025/3/1

Y1 - 2025/3/1

N2 - The effect of Cu addition on the air oxidation behavior of 25Cr–20Ni austenitic stainless steels was investigated at 700 °C. The steel with Cu exhibited larger weight gain and greater oxide layer thickness than the steel without Cu. The transmission Kikuchi diffraction analysis results clearly indicated that the surface oxide scales consist of three distinct oxide phase layers in both steels. The overall oxide layer sequence was consistent with thermodynamic calculations; outermost Fe-rich corundum oxide, intermediate spinel oxide and inner Cr-rich corundum oxide layers. It seems that the presence of Cu increases the outward diffusion rate of alloying elements in both matrix and oxide layers during oxidation, eventually enhancing oxidation kinetics.

AB - The effect of Cu addition on the air oxidation behavior of 25Cr–20Ni austenitic stainless steels was investigated at 700 °C. The steel with Cu exhibited larger weight gain and greater oxide layer thickness than the steel without Cu. The transmission Kikuchi diffraction analysis results clearly indicated that the surface oxide scales consist of three distinct oxide phase layers in both steels. The overall oxide layer sequence was consistent with thermodynamic calculations; outermost Fe-rich corundum oxide, intermediate spinel oxide and inner Cr-rich corundum oxide layers. It seems that the presence of Cu increases the outward diffusion rate of alloying elements in both matrix and oxide layers during oxidation, eventually enhancing oxidation kinetics.

KW - Austenitic stainless steel

KW - Corundum oxide

KW - Oxidation

KW - Oxide layer

KW - Spinel oxide

KW - Transmission kikuchi diffraction

UR - https://www.scopus.com/pages/publications/85217911969

U2 - 10.1016/j.jmrt.2025.02.134

DO - 10.1016/j.jmrt.2025.02.134

M3 - Article

AN - SCOPUS:85217911969

SN - 2238-7854

VL - 35

SP - 4543

EP - 4552

JO - Journal of Materials Research and Technology

JF - Journal of Materials Research and Technology

ER -

Effect of Cu addition on high-temperature oxidation behavior of 25Cr–20Ni austenitic stainless steel

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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