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

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

Research output: Contribution to journalArticlepeer-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 languageEnglish
Article number109531
JournalCorrosion Science
Volume188
Early online date7 May 2021
DOIs
Publication statusPublished - 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

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

Fingerprint

Dive into the research topics of 'Supercritical-CO2 corrosion behavior of alumina- and chromia-forming heat resistant alloys with Ti'. Together they form a unique fingerprint.

Cite this