A Preliminary Study of Oxidation Behavior of Mo-50Re Alloy at Different Temperature Using Positron Annihilation Lifetime Spectroscopy
| Autor: | Yi Chu Wu, Tong Guang Zhai, Wei Yang, Jianjian Shi, Zhe Jie Zhu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Diffraction Radiation Materials science Alloy Analytical chemistry Oxide 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Crystallography chemistry.chemical_compound Positron chemistry Phase (matter) 0103 physical sciences X-ray crystallography engineering General Materials Science 0210 nano-technology Spectroscopy Monoclinic crystal system |
| Zdroj: | Defect and Diffusion Forum. 373:134-137 |
| ISSN: | 1662-9507 |
| Popis: | The oxidized Mo-50Re alloys in air at 573 K and 873 K for various times were investigated by X-Ray diffraction and positron annihilation lifetime spectroscopy. The results indicated that main orthogonal phase MoO3 together with small amount of monoclinic phase Mo8O23 were formed on on the surface of the specimens, and the oxide film of specimens oxidized at 873 K were much thicker than that of specimens oxidized at 573 K. Meanwhile, when Mo-50Re specimens oxidized in air at 873K, the defect’s size within interface layer of the specimens was larger, and the oxide film on the surface of the specimens contained much more defects. Faster oxidation process were observed occured at 873K, which was likely due to the formation of larger-size interfacial defects. |
| Databáze: | OpenAIRE |
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