Supercritical-CO2 corrosion behavior of alumina- and chromia-forming heat resistant alloys with Ti

Gokul Obulan Subramanian; Sung Hwan Kim; Junjie Chen; Changheui Jang

doi:10.1016/j.corsci.2021.109531

Supercritical-CO₂ corrosion behavior of alumina- and chromia-forming heat resistant alloys with Ti

Gokul Obulan Subramanian, Sung Hwan Kim, Junjie Chen, Changheui Jang^*

^*Corresponding author for this work

Metallurgy and Materials

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

1 Citation (Scopus)

Abstract

Short-term corrosion behavior of the alumina- and chromia-forming Fe-Ni-based heat resistant alloys with Ti for γ’-Ni₃(Al,Ti) precipitation were evaluated in supercritical-CO₂ (sCO₂) environment at 650 °C and 20 MPa for 457 h. The corrosion test showed development of thinner oxides with some occasional Fe-rich oxide nodules in alumina-forming alloy A (16Cr-4.5Al-3Ti). However, chromia-forming alloy C (20Cr-2Al-2Ti) exhibited several occurrences of Fe-rich oxide nodules and spallation of thinner oxides. Meanwhile, the pre-oxidation treatment resulted in improved corrosion resistance in sCO₂ environment by preventing the Fe-rich oxide nodule formation and oxide spallation, especially for alloy A with formation of α-Al₂O₃.

Original language	English
Article number	109531
Journal	Corrosion Science
Volume	188
Early online date	7 May 2021
DOIs	https://doi.org/10.1016/j.corsci.2021.109531
Publication status	Published - 1 Aug 2021

Bibliographical note

Funding Information:
This study was mainly supported by the Nuclear R&D Program (no. 2016R1A5A101391921 and 2019M2D2A2050927 ) of the MSIT/NRF of the Rep. of Korea. Financial support for two of the authors is provided by the BK-Plus Program of the National Research Foundation (NRF) of the Rep. of Korea . The supports from the KAIST Analysis Center for Research Advancement (KARA) are acknowledged.

Funding Information:
This study was mainly supported by the Nuclear R&D Program (no. 2016R1A5A101391921 and 2019M2D2A2050927) of the MSIT/NRF of the Rep. of Korea. Financial support for two of the authors is provided by the BK-Plus Program of the National Research Foundation (NRF) of the Rep. of Korea. The supports from the KAIST Analysis Center for Research Advancement (KARA) are acknowledged.

Publisher Copyright:
© 2021 Elsevier Ltd

Keywords

AlO
Alumina-forming alloy
Heat resistant alloy
Pre-oxidation
Supercritical carbon dioxide

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Materials Science

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10.1016/j.corsci.2021.109531Licence: None: All rights reserved

Cite this

@article{a9321c1cf4a6493b8f8a0ccfd6961cbe,

title = "Supercritical-CO2 corrosion behavior of alumina- and chromia-forming heat resistant alloys with Ti",

abstract = "Short-term corrosion behavior of the alumina- and chromia-forming Fe-Ni-based heat resistant alloys with Ti for γ{\textquoteright}-Ni3(Al,Ti) precipitation were evaluated in supercritical-CO2 (sCO2) environment at 650 °C and 20 MPa for 457 h. The corrosion test showed development of thinner oxides with some occasional Fe-rich oxide nodules in alumina-forming alloy A (16Cr-4.5Al-3Ti). However, chromia-forming alloy C (20Cr-2Al-2Ti) exhibited several occurrences of Fe-rich oxide nodules and spallation of thinner oxides. Meanwhile, the pre-oxidation treatment resulted in improved corrosion resistance in sCO2 environment by preventing the Fe-rich oxide nodule formation and oxide spallation, especially for alloy A with formation of α-Al2O3.",

keywords = "AlO, Alumina-forming alloy, Heat resistant alloy, Pre-oxidation, Supercritical carbon dioxide",

author = "{Obulan Subramanian}, Gokul and Kim, {Sung Hwan} and Junjie Chen and Changheui Jang",

note = "Funding Information: This study was mainly supported by the Nuclear R&D Program (no. 2016R1A5A101391921 and 2019M2D2A2050927 ) of the MSIT/NRF of the Rep. of Korea. Financial support for two of the authors is provided by the BK-Plus Program of the National Research Foundation (NRF) of the Rep. of Korea . The supports from the KAIST Analysis Center for Research Advancement (KARA) are acknowledged. Funding Information: This study was mainly supported by the Nuclear R&D Program (no. 2016R1A5A101391921 and 2019M2D2A2050927) of the MSIT/NRF of the Rep. of Korea. Financial support for two of the authors is provided by the BK-Plus Program of the National Research Foundation (NRF) of the Rep. of Korea. The supports from the KAIST Analysis Center for Research Advancement (KARA) are acknowledged. Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

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doi = "10.1016/j.corsci.2021.109531",

language = "English",

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T1 - Supercritical-CO2 corrosion behavior of alumina- and chromia-forming heat resistant alloys with Ti

AU - Obulan Subramanian, Gokul

AU - Kim, Sung Hwan

AU - Chen, Junjie

AU - Jang, Changheui

N1 - Funding Information: This study was mainly supported by the Nuclear R&D Program (no. 2016R1A5A101391921 and 2019M2D2A2050927 ) of the MSIT/NRF of the Rep. of Korea. Financial support for two of the authors is provided by the BK-Plus Program of the National Research Foundation (NRF) of the Rep. of Korea . The supports from the KAIST Analysis Center for Research Advancement (KARA) are acknowledged. Funding Information: This study was mainly supported by the Nuclear R&D Program (no. 2016R1A5A101391921 and 2019M2D2A2050927) of the MSIT/NRF of the Rep. of Korea. Financial support for two of the authors is provided by the BK-Plus Program of the National Research Foundation (NRF) of the Rep. of Korea. The supports from the KAIST Analysis Center for Research Advancement (KARA) are acknowledged. Publisher Copyright: © 2021 Elsevier Ltd

PY - 2021/8/1

Y1 - 2021/8/1

N2 - Short-term corrosion behavior of the alumina- and chromia-forming Fe-Ni-based heat resistant alloys with Ti for γ’-Ni3(Al,Ti) precipitation were evaluated in supercritical-CO2 (sCO2) environment at 650 °C and 20 MPa for 457 h. The corrosion test showed development of thinner oxides with some occasional Fe-rich oxide nodules in alumina-forming alloy A (16Cr-4.5Al-3Ti). However, chromia-forming alloy C (20Cr-2Al-2Ti) exhibited several occurrences of Fe-rich oxide nodules and spallation of thinner oxides. Meanwhile, the pre-oxidation treatment resulted in improved corrosion resistance in sCO2 environment by preventing the Fe-rich oxide nodule formation and oxide spallation, especially for alloy A with formation of α-Al2O3.

AB - Short-term corrosion behavior of the alumina- and chromia-forming Fe-Ni-based heat resistant alloys with Ti for γ’-Ni3(Al,Ti) precipitation were evaluated in supercritical-CO2 (sCO2) environment at 650 °C and 20 MPa for 457 h. The corrosion test showed development of thinner oxides with some occasional Fe-rich oxide nodules in alumina-forming alloy A (16Cr-4.5Al-3Ti). However, chromia-forming alloy C (20Cr-2Al-2Ti) exhibited several occurrences of Fe-rich oxide nodules and spallation of thinner oxides. Meanwhile, the pre-oxidation treatment resulted in improved corrosion resistance in sCO2 environment by preventing the Fe-rich oxide nodule formation and oxide spallation, especially for alloy A with formation of α-Al2O3.

KW - AlO

KW - Alumina-forming alloy

KW - Heat resistant alloy

KW - Pre-oxidation

KW - Supercritical carbon dioxide

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