Melt Infiltrated Ceramic Matrix Composites for Shrouds and Combustor Liners of Advanced Industrial Gas Turbines

Gregory Corman ; Krishan Luthra ; Jill Jonkowski ; Joseph Mavec ; Paul Bakke ; Debbie Haught ; Merrill Smith

关键词: CERAMICS;    COATINGS;    COMBUSTORS;    DEPOSITION;    DESIGN;    ENGINES;    FABRICATION;    GAS TURBINE ENGINES;    GAS TURBINES;    LINERS;    PERFORMANCE;    SHROUDS;    TESTING;    TURBINES;   

DOI  :  10.2172/1004879
RP-ID  :  None
PID  :  OSTI ID: 1004879
Others  :  TRN: US201105%%116

学科分类：航空航天科学

美国|英语

来源: SciTech Connect

【 摘 要 】

This report covers work performed under the Advanced Materials for Advanced Industrial Gas Turbines (AMAIGT) program by GE Global Research and its collaborators from 2000 through 2010. A first stage shroud for a 7FA-class gas turbine engine utilizing HiPerComp{reg_sign}* ceramic matrix composite (CMC) material was developed. The design, fabrication, rig testing and engine testing of this shroud system are described. Through two field engine tests, the latter of which is still in progress at a Jacksonville Electric Authority generating station, the robustness of the CMC material and the shroud system in general were demonstrated, with shrouds having accumulated nearly 7,000 hours of field engine testing at the conclusion of the program. During the latter test the engine performance benefits from utilizing CMC shrouds were verified. Similar development of a CMC combustor liner design for a 7FA-class engine is also described. The feasibility of using the HiPerComp{reg_sign} CMC material for combustor liner applications was demonstrated in a Solar Turbines Ceramic Stationary Gas Turbine (CSGT) engine test where the liner performed without incident for 12,822 hours. The deposition processes for applying environmental barrier coatings to the CMC components were also developed, and the performance of the coatings in the rig and engine tests is described.