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Method for manufacturing SiC ceramic-based turbine blade based on photocurable 3D printing

A turbine blade and 3D printing technology, applied in ceramic products, applications, household appliances, etc., can solve the problems of restricting the strength of products at room temperature and high temperature, the wide application of restricted reaction sintered SiC ceramics, and low product density, and achieve low cost and method Simple, the effect of improving strength and toughness

Active Publication Date: 2015-04-08
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although reaction sintered SiC ceramics are low in cost and easy to operate, a large number of pores cannot be filled after the product is discharged at high temperature, and the relative density of the product is low. widely used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for manufacturing a SiC ceramic matrix composite turbine blade based on light-curing 3D printing technology, comprising the following steps:

[0027] 1) Design and manufacture of turbine blade mold

[0028] Use UG, ProE and other CAD software to make the turbine blade mold model, and convert it into STL format, and use the light-curing rapid prototyping machine to manufacture the turbine blade resin mold;

[0029] 2) Preparation of carbon fiber interface layer

[0030] A ceramic interfacial layer is formed on the surface of short carbon fibers (length 0.5-2mm, diameter 10um) by chemical vapor deposition to prevent carbon fibers from being damaged by subsequent processes; specifically: use trichloromethylsilane (MTS) as the gas source material, through chemical vapor phase The deposition technology deposits a SiC ceramic interface layer with a thickness of 3-5um on the surface of the carbon fiber.

[0031] 3) Slurry preparation and vacuum casting

[0032] Acc...

Embodiment 2

[0043] A SiC ceramic matrix composite material turbine blade based on photocuring 3D printing technology, comprising the following steps:

[0044] 1) Design and manufacture of turbine blade mold

[0045] Use UG, ProE and other CAD software to make turbine blade mold models, and convert them into STL format, and use light-curing rapid prototyping machines to manufacture turbine blade resin molds;

[0046] 2) Preparation of carbon fiber interface layer

[0047] The impregnation slurry is prepared according to the mass ratio of boron nitride: phenolic resin: ethylene glycol = 20:30:50. And add phenolic resin mass 8%-12% catalyst-benzenesulfonyl chloride. Then short carbon fibers were added to the impregnated slurry, and ultrasonically dispersed for 30 minutes, so that the impregnated slurry was completely adhered to the surface of the carbon fibers. After impregnation, take out the carbon fiber and place it in a 50°C oven for pre-curing. After 3-6 hours of heat preservation, h...

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Abstract

The invention discloses a method for manufacturing a SiC ceramic-based turbine blade based on photocurable 3D printing. The method comprises the following steps of firstly manufacturing a turbine blade resin mold based on the photocurable 3D printing technology, casting the blade resin mold by using a non-water-based gel-casting ceramic slurry, curing and carrying out pyrolysis carbonization process to obtain a porous carbon preform; by an in-situ reaction sintering technology, at 1420-1700 DEG C, carrying out siliconizing and silicon discharge processes on the carbon perform to obtain the porous SiC ceramic-based composites material turbine blade; and finally obtaining the dense SiC ceramic-based composites material turbine blade by a chemical vapor deposition / infiltration method. The method has the characteristics of near-net molding, free molding and complex molding and the purpose that ceramic parts are densified can be achieved at a lower temperature.

Description

【Technical field】 [0001] The invention belongs to the field of manufacturing turbine blades of composite materials, in particular to a method for manufacturing turbine blades of SiC ceramic matrix composite materials. 【technical background】 [0002] At present, the nickel-based superalloy used in hollow turbine blades has a limited service temperature and high density, which restricts the further improvement of engine performance. The SiC ceramic composite material has the characteristics of high temperature resistance, high specific strength, high specific modulus and low density, which can greatly improve the engine's thrust-to-weight ratio and high-temperature performance, and reduce fuel consumption. It is an ideal material for the manufacture of high-temperature engine components in the future. Reaction sintered SiC ceramics have special properties of high strength, wear resistance, corrosion resistance, thermal shock resistance, and oxidation resistance, and have becom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/565C04B38/00
CPCC04B2235/6026
Inventor 鲁中良曹继伟白树钊李涤尘卢秉恒
Owner XI AN JIAOTONG UNIV
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