Please use this identifier to cite or link to this item:
http://hdl.handle.net/11375/21315
Title: | Effect of Water Vapour Partial Pressure on the Chromia (Cr2O3)-Based Scale Stability |
Authors: | Mahboubi, Shooka A. Botton, Gianluigi S. Zurob, Hatem R. Kish, Joey |
Department: | Materials Science and Engineering |
Keywords: | Kinetics;Cr2O3-based scale;Oxidation;Volatilization;Water vapour;Type 310S stainless steel;Alloying element |
Publication Date: | 2017 |
Abstract: | The kinetics of the Cr2O3-based scale oxidation and volatilization were studied in the presence of water vapour (H2O). A commercial Cr2O3-based scale forming Type 310S stainless steel was examined at the ambient pressure (0.1 MPa) and 550 ºC in relatively low and high H2O containing environments of air-10% H2O and air-70% H2O, respectively. The increase in the partial pressure of H2O (pH2O) from 10% to 70% resulted in transition of the oxidation and volatilization kinetics from the parabolic rate law in air-10% H2O to the paralinear rate law in air-70% H2O. The kinetics transition was attributed to the increase in the Cr loss rate from the base scale after coupons exposure in air-70% H2O. The significant role of Mn alloying element in the base scale protectiveness was discussed in the context of the Cr2O3-based scale stability. |
URI: | http://hdl.handle.net/11375/21315 |
Appears in Collections: | Materials Science and Engineering Publications |
Files in This Item:
File | Description | Size | Format | |
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S. Mahboubi et al., Submitted to CMQ Journal, preprint.pdf | Preprint | 2.04 MB | Adobe PDF | View/Open |
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