Oxidation of Austenitic Steel TP347HFG Exposed to Supercritical Water with Different Dissolved Oxygen Concentration

Naiqiang Zhang; Bao Rang Li; Yang Bai; Hong Xu

doi:10.4028/www.scientific.net/AMM.148-149.1179

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 148-149Oxidation of Austenitic Steel TP347HFG Exposed to...

Oxidation of Austenitic Steel TP347HFG Exposed to Supercritical Water with Different Dissolved Oxygen Concentration

Abstract:

The oxidation of austenitic fine-grained steel TP347HFG exposed to supercritical water at 550 °C and 25 MPa with the dissolved oxygen concentration of 100 ppb, 300 ppb and 2000 ppb was investigated. The results indicated weight gain increased with the dissolved oxygen increasing. The herpes-shaped oxides were formed on the sample surface. The oxide layer was a typical dual-layered structure with a Fe-rich outer layer and a Fe-Cr-Ni-rich inner layer. The influences of the dissolved oxygen concentration and grain size on oxidation behavior were discussed finally.

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Applied Mechanics and Materials (Volumes 148-149)

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1179-1183

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https://doi.org/10.4028/www.scientific.net/AMM.148-149.1179

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Online since:

December 2011

Authors:

Naiqiang Zhang, Bao Rang Li, Yang Bai, Hong Xu

Keywords:

Austenitic Steel, Dissolved Oxygen (DO), Oxidation, Supercritical Water

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