TY - JOUR
T1 - Evidence for chromium, cobalt and molybdenum volatilisations during high temperature oxidation of Co-27Cr-6Mo Alloy
AU - Wongpromrat, Patthranit
AU - Galerie, Alain
AU - Thublaor, Thammaporn
AU - Chandra-ambhorn, Walairat
AU - Ponpo, Phisan
AU - Watasuntornpong, Pongpun
AU - Yamanaka, Kenta
AU - Chiba, Akihiko
AU - Tunthawiroon, Phacharaphon
AU - Siripongsakul, Thamrongsin
AU - Chandra-ambhorn, Somrerk
AU - Ruangtrakoon, Natthawut
N1 - Funding Information:
The authors would like to acknowledge The Office of the Higher Education Commission and The Thailand Research Fund , Thailand (Project ID: MRG6280169 ) and King Mongkut’s University of Technology North Bangkok , Thailand (Contract no. KMUTNB-BasicR-64-27 ) for providing the financial support of this project. In addition, we also thank FESEM centre, School of Engineering, KMITL and Nano Central Lab, KMITL for supporting the characterisation equipment in this project. Dr. Alexander Pisch (SIMaP-Université Grenoble-Alpes) and Dr. Stéphane Coindeau (CMTC-Université Grenoble-Alpes) are warmly acknowledged for their help in thermodynamic and X-Ray diffraction respectively.
Funding Information:
The authors would like to acknowledge The Office of the Higher Education Commission and The Thailand Research Fund, Thailand (Project ID: MRG6280169) and King Mongkut's University of Technology North Bangkok, Thailand (Contract no. KMUTNB-BasicR-64-27) for providing the financial support of this project. In addition, we also thank FESEM centre, School of Engineering, KMITL and Nano Central Lab, KMITL for supporting the characterisation equipment in this project. Dr. Alexander Pisch (SIMaP-Universit? Grenoble-Alpes) and Dr. St?phane Coindeau (CMTC-Universit? Grenoble-Alpes) are warmly acknowledged for their help in thermodynamic and X-Ray diffraction respectively.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/7/1
Y1 - 2022/7/1
N2 - A Co-27Cr-6Mo alloy was oxidised in pure O2 between 800 and 1000 °C for durations up to 96 h. The flow rate was varied between 2 and 5 cm.s–1. In these conditions, volatilisations of chromium, cobalt and molybdenum were observed. The chromium volatilisation values were in good agreement with calculations assuming (CrO3)g volatilisation limited by diffusion in the gas boundary layer. On the contrary, the measured flux of evaporated Co was higher than the calculated Co volatilisation flux from the metallic Co. The theoretical relation between the solid Co particle size and its vapour pressure was suggested to help explaining such difference.
AB - A Co-27Cr-6Mo alloy was oxidised in pure O2 between 800 and 1000 °C for durations up to 96 h. The flow rate was varied between 2 and 5 cm.s–1. In these conditions, volatilisations of chromium, cobalt and molybdenum were observed. The chromium volatilisation values were in good agreement with calculations assuming (CrO3)g volatilisation limited by diffusion in the gas boundary layer. On the contrary, the measured flux of evaporated Co was higher than the calculated Co volatilisation flux from the metallic Co. The theoretical relation between the solid Co particle size and its vapour pressure was suggested to help explaining such difference.
KW - Co volatilisation
KW - CoCrMo alloy
KW - Cr volatilisation
KW - High temperature oxidation
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U2 - 10.1016/j.corsci.2022.110285
DO - 10.1016/j.corsci.2022.110285
M3 - Article
AN - SCOPUS:85128360942
SN - 0010-938X
VL - 202
JO - Corrosion Science
JF - Corrosion Science
M1 - 110285
ER -