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Development of Ceramic Stator Vane for 1500°C Class Gas Turbine FREE

[+] Author Affiliations
Takashi Machida, Masato Nakayama

Hitachi Ltd., Tsuchiura, Ibaraki, Japan

Katsuo Wada

Hitachi Ltd., Hitachi, Ibaraki, Japan

Tooru Hisamatsu, Isao Yuri, Kazunori Watanabe

Central Research Institute of Energy Power Industry, Yokosuka, Kanagawa, Japan

Paper No. 96-GT-459, pp. V005T13A026; 6 pages
doi:10.1115/96-GT-459
From:
  • ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; General
  • Birmingham, UK, June 10–13, 1996
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7876-7
  • Copyright © 1996 by ASME

abstract

Employing ceramic materials for the critical components of industrial gas turbines is anticipated to improve the thermal efficiency of power plants. We have developed a first stage ceramic stator vane for a 1500°, 20MW class industrial gas turbine by improving our original one for a 1300°C class gas turbine. Our stator vane has a hybrid ceramic/metal structure composed of a ceramic shell, a metal core and a heat insulating layer. This composition increases the strength of the brittle ceramic parts and reduces the amount of cooling air. To improve the durability and reliability of the stator vane in 1500°C combustion gas, the ceramic shell uses silicon carbide instead of silicon nitride, and its configuration is improved. Furthermore, we use an internal cooling system to control the temperature of the metal core. Thermal loading cascade tests are conducted to prove the reliability and cooling performance of the stator vane.

Copyright © 1996 by ASME
This article is only available in the PDF format.

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