Aero-engine ceramic matrix composite fixed guider blade structure and forming method thereof
An aero-engine and composite material technology, which is applied in the direction of engine components, machines/engines, air transportation, etc., can solve the problems of unreasonable design of CMC guide blade prefabrication, poor blade root strength, etc., so as to reduce the risk of preparation and reduce the cost , good technical effect
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[0054] Example one
[0055] The dimensions of the CMC fixed guide vane in this embodiment are: 60 mm in length, 50 mm in width, and 120 mm in height. In this embodiment, the raw material of the ceramic matrix composite material is SiC fiber, and the raw materials used in the preparation process are trichloromethylsilane and H 2 , Ar gas, etc.
[0056] Specific steps are as follows:
[0057] (1) Preparation of preforms: SiC fibers are used to weave 2D plain weave cloth, and other types of preforms such as 2.5D and 3D can also be used. According to the size of the parts, the plain weave cloth is cut into a suitable size, and multiple layers of plain weave cloth are stacked and punctured in the stacking direction of the plain weave cloth. The puncture fiber uses the same SiC fiber to form a SiC fiber preform. The SiC fiber preform is fixed and formed using a mold.
[0058] (2) Preparation of the interface layer: the preform of step (1) is placed in a chemical vapor deposition furnace t...
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