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Thermophysical properties and deposition of B2 structure based Al-Ni-Ru-M alloysстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Vjunitsky I., Bandyopadhyay P.P., Siegmann St, Dvorak M., Schönfeld E., Kaiser T., Steurer W., Shklover V.
- Журнал: Surface and Coatings Technology
- Том: 192
- Номер: 2-3
- Год издания: 2005
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 131
- Последняя страница: 138
- DOI: 10.1016/j.surfcoat.2004.09.028
- Аннотация: The thermophysical properties of B2 structure based Al-Ni-Ru-M alloys have been studied for different alloy compositions. A normal value for the thermal conductivity of these alloys is within the range of 10-20 W m -1 K -1 range at room temperature, but can be reduced to approximately 3.5 W m -1 K -1 by modifying the alloy composition. The observed positive and approximately linear temperature dependence of the thermal conductivity of B2 structure based on Al-Ni-Ru-M alloys indicates their metal electronic nature. Thermal expansion coefficients (i) increase with temperature, (ii) are similar to those of superalloys and steels, and (iii) are mostly dependent on Ru content. A fused and subsequently pulverized Al-Ni-Ru B2 alloy was deposited on a Ni-based superalloy substrate made of modified CMSX-4 using vacuum and atmospheric plasma spraying. The coatings obtained were characterized for their microstructure, phase composition, hardness, and bond strength. The coatings exhibited sound microstructural integrity and favorable coating-substrate adhesion. The phases originally present in the powder were also found to be retained in the coating. Interdiffusion processes between the investigated coatings and the Ni-based superalloy substrate were primarily estimated by the diffusion couples approach. The segregation of a new intermetallic phase was detected at the (Al 50Ni 40 Ru 10 alloy)/(modified CMSX-4) interface. © 2004 Elsevier B.V. All rights reserved.
- Добавил в систему: Вьюницкий Иван Викторович