Isothermal oxidation of bulk Zr2Al3C4 at 500 to 1000 °C in air
| العنوان: | Isothermal oxidation of bulk Zr2Al3C4 at 500 to 1000 °C in air |
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| المؤلفون: | Min-Yu Li, Y. W. Bao, J. Y. Wang, Lianlong He, Y. C. Zhou, Zhong-Wen Lin |
| المصدر: | Journal of Materials Research. 23:359-366 |
| بيانات النشر: | Springer Science and Business Media LLC, 2008. |
| سنة النشر: | 2008 |
| مصطلحات موضوعية: | Materials science, Mechanical Engineering, Metallurgy, Kinetics, Analytical chemistry, Oxide, Activation energy, Atmospheric temperature range, Condensed Matter Physics, Isothermal process, Amorphous solid, symbols.namesake, chemistry.chemical_compound, chemistry, Mechanics of Materials, Monolayer, symbols, General Materials Science, Raman spectroscopy |
| الوصف: | The isothermal oxidation behavior of Zr2Al3C4 in the temperature range of 500 to 1000 °C for 20 h in air has been investigated. The oxidation kinetics follow a parabolic law at 600 to 800 °C and a linear law at higher temperatures. The activation energy is determined to be 167.4 and 201.2 kJ/mol at parabolic and linear stages, respectively. The oxide scales have a monolayer structure, which is a mixture of ZrO2 and Al2O3. As indicated by x-ray diffraction and Raman spectra, the scales formed at 500 to 700 °C are amorphous, and at higher temperatures are α-Al2O3 and t-ZrO2 nanocrystallites. The nonselective oxidation of Zr2Al3C4 can be attributed to the strong coupling between Al3C2 units and ZrC blocks in its structure, and the close oxygen affinity of Zr and Al. |
| تدمد: | 2044-5326 0884-2914 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::3487c712de6ba50ddf4d4ca664684c2b https://doi.org/10.1557/jmr.2008.0042 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........3487c712de6ba50ddf4d4ca664684c2b |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 20445326 08842914 |
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