Mechanical and oxidation behavior of textured Ti2AlC and Ti3AlC2 MAX phase materials |
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| Affiliation: | 1. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research (IEK), 52425 Jülich, Germany;2. Institute of Metal Research, Chinese Academy of Sciences, 110016, Shenyang, China;1. Department of Functional Nanosystems and High-Temperature Materials, National University of Science and Technology “MISiS”, Leninskiy prospect, 4, 119049 Moscow, Russia;2. Plastic Deformation Materials Laboratory, Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Academician Osipyan, 8, Chernogolovka, Moscow region, Russia;3. Center for X-Ray Structural Research and Materials Diagnosis, National University of Science and Technology “MISiS”, Leninskiy prospect, 4, Moscow, Russia;4. Modern Special Materials Department, Polzunov Altai State Technical University, Lenina avenue, 46, Barnaul, Altai region, Russia;1. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, 52425, Jülich, Germany;2. Chair of Energy Engineering Materials, RWTH Aachen University, 52056, Aachen, Germany;1. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China;2. Advanced Materials Processing Unit, National Institute for Materials Science, Tsukuba 305-0047, Ibaraki, Japan;3. Department of Materials Science and Engineering, Drexel University, Philadelphia, PA 19104, USA;4. School of Engineering and Material Science, Queen Mary University of London, London E1 4NS, United Kingdom;1. Innovation Research Team for Advanced Ceramics, Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China;2. Department of ATF R&D, China Nuclear Power Technology Research Institute, China General Nuclear Power Corporation (CGN), Shenzhen 518026, China;1. State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;2. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Institute of Functional Materials, Donghua University, Shanghai 201620, China;3. University of Chinese Academy of Sciences, Beijing 100049, China;1. Institut Pprime, CNRS–Université de Poitiers - ENSMA, UPR CNRS 3346, Téléport 2, Futuroscope Chasseneuil, France;2. Safran Tech, rue des jeunes bois, Châteaufort, CS 80112, 78772 Magny les hameaux, France |
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| Abstract: | Highly textured Ti2AlC and Ti3AlC2 ceramics were successfully fabricated by a two-step fabrication process, and the Lotgering orientation factors for {00l} planes of textured Ti2AlC and Ti3AlC2 were calculated as 0.82 and 0.71, respectively. The effect of texturing was evaluated in terms of elastic modulus and hardness by macro- and micro-indentation. Moreover, the oxidation behavior of the MAX phases was investigated at 1300 °C in air, revealing that the oxidation was markedly anisotropic, where the textured side surface exhibited much better oxidation resistance, resulting from the rapid diffusion of Al element within its basal planes to form a protective Al2O3 scale on it. Furthermore, Ti2AlC had larger difference regarding oxidation behavior between the top and side surface than Ti3AlC2, correlated to its higher Al ratio, leading to higher texturing degree and more diffusion pathways to the outer surface to produce an Al2O3 layer already at the initial oxidation stage. |
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| Keywords: | Texturing Mechanical properties Oxidation |
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