HYBRID CERAMIC MATRIX COMPOSITE TURBINE BLADE EXCELLENT IN WORKABILITY AND PERFORMANCE

摘要

PROBLEM TO BE SOLVED: To provide a CMC turbine blade with high temperature capacity by making a thick tub tail part of the CMC turbine blade sufficiently fine in an estimable manner. SOLUTION: This invention relates to a hybrid ceramic matrix composite turbine engine part provided with an outer shell part 36 and an inner core part 34 and having the outer shell part 36 and the inner core part 34 combined by using a melting infiltration (MI) method. The outer shell part 36 is composed of SiC/SiC material manufactured by either a slurry cast MI method or a prepreg MI method. The inner core part 34 is composed of material selected from a group of Si/SiC composite material and monolithic ceramic material. Si/SiC composite material can be manufactured by using Silcomp method. The invented parts can be any of a high pressure turbine blade, a high pressure turbine vane, a low pressure turbine blade 20 or a low pressure turbine vane. COPYRIGHT: (C)2005,JPO&NCIPI