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Thermal expansion behavior of ruthenium aluminides |
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| Affiliation: | 1. Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA;2. General Electric Global Research, Schenectady, NY, USA;3. Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, USA;1. Defence Metallurgical Research Laboratory, Kanchanbagh, Hyderabad, 500 058, India;2. Department of Metallurgical and Materials Engineering, National Institute of Technology, Warangal, 506 004, India |
| Abstract: | The thermal expansion behavior of three near-stoichiometric variants of ruthenium aluminide (RuAl) has been investigated. The coefficient of thermal expansion (CTE) varied between 5.5 × 10−6/K and 11 × 10−6/K in the temperature range from 400 to 1773 K. The behavior of RuAl is compared to that of other high temperature B2 intermetallics with emphasis on the use of RuAl as a bond coat material within a thermal barrier coating system. |
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