Effect of texture on oxidation resistance of Ti3AlC2
| Autor: | Degui Zhu, Yoshio Sakka, Tohru S. Suzuki, Ludi Xu, Yunlong Liu, Byung-Nam Kim, Salvatore Grasso, Chunfeng Hu |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Diffusion 02 engineering and technology Atmospheric temperature range 021001 nanoscience & nanotechnology 01 natural sciences Transverse plane visual_art 0103 physical sciences Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Basal plane Ceramic Texture (crystalline) Composite material 0210 nano-technology Anisotropy Oxidation resistance |
| Zdroj: | Journal of the European Ceramic Society. 38:3417-3423 |
| ISSN: | 0955-2219 |
| Popis: | Oxidation resistance of textured Ti3AlC2 ceramics was measured in the temperature range 1273–1573 K. It was found that the oxidation was markedly anisotropic and the samples exhibited a better oxidation resistance when tested along a direction transverse to the c-axis. This behavior was attributed to the rapid diffusion of Al within its basal planes to form a passivating Al2O3 scale and it respected Ellingham diagrams. The scales formed had different compositions depending on the testing direction; this response was clearly resulting from the crystallographic orientation. Even at 1473 K after 20 h exposure, the samples tested in a direction transverse to the c-axis showed a reduced weight gain which was 45 times lower than one seen on a basal plane. |
| Databáze: | OpenAIRE |
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