Carburization of three Fe-19Ni-21Cr- x Al ( x = 0, 2, 6 at.%) alloys at 900 °C in oxygen-contaminated CH 4 /H 2 atmospheres
| Autor: | Lin Liu, Xiangjun Wu, Yunsong Niu, J. Shen, Quanzhong Guo, Sidi Liu |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
020209 energy General Chemical Engineering Metallurgy Inorganic chemistry Kinetics chemistry.chemical_element 02 engineering and technology General Chemistry Contamination 021001 nanoscience & nanotechnology Oxygen Corrosion Methane decomposition chemistry 0202 electrical engineering electronic engineering information engineering General Materials Science 0210 nano-technology Internal oxidation Ternary operation Carbon |
| Zdroj: | Corrosion Science. 111:436-445 |
| ISSN: | 0010-938X |
| DOI: | 10.1016/j.corsci.2016.05.008 |
| Popis: | The corrosion of three Fe-19Ni-21Cr- x Al ( x = 0, 2, 6 at.%) alloys was studied at 900 °C in 10% CH 4 /H 2 and 1.57% CH 4 /H 2 . All alloys followed complex kinetics. Addition of 2 at.% Al had a slight effect on the corrosion behavior, while that of 6 at.% Al reduced the carbon attack, but was still insufficient to form protective Al 2 O 3 scales. The concept of virtual carbon activity was applied to examine the deviation from equilibrium of the methane decomposition reaction. Moreover, a treatment of internal oxidation of ternary alloys was used to describe the internal carburization kinetics. |
| Databáze: | OpenAIRE |
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