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Method for preparing fiber reinforced multiphase ceramic matrix composite material

A composite material and fiber-reinforced technology, which is applied in the field of preparation of fiber-reinforced multiphase ceramic matrix composite materials, can solve the problems of ultra-high temperature characteristics of difficult materials, uneven distribution of slurry, and high cost, so as to improve ultra-high temperature resistance and avoid The preparation cycle is long, reducing the effect of post-processing

Inactive Publication Date: 2018-08-14
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above method for preparing multiphase ceramic matrix composites, if the prefabricated body is used as the raw material, and then the vacuum impregnation method is used to introduce the powder, it is easy to cause plugging and other phenomena, resulting in uneven distribution of the slurry in the prefabricated body, especially the prefabricated The core of the body; the introduction of zirconium carbide, zirconium diboride, hafnium carbide or hafnium diboride in the way of silicon-zirconium alloy or silicon-hafnium alloy has a limited amount of ultra-high temperature ceramic components, and it is difficult to greatly improve the ultra-high temperature of the material. High temperature characteristics; when the composite material is prepared by the impregnation and cracking process of the precursor, it has the disadvantages of long cycle time, low interlayer bonding force and high cost; when the composite material is prepared by the hot pressing method, although the introduction amount of ultra-high temperature ceramic powder can be greatly increased , but this process is only suitable for the preparation of composite components with simple shapes, and hot pressing has high requirements for equipment, so the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The steps of the method for preparing fiber-reinforced multiphase ceramic matrix composites are as follows:

[0029] Step 1: Weaving carbon fiber fibers into a two-dimensional plain weave cloth;

[0030] Step 2: Prepare an interface layer on the surface of the carbon fiber. The interface layer has a double-layer interface layer structure. The inner interface layer is a boron nitride interface layer, the thickness of the inner interface layer is 0.5μm, and the outer interface layer is a SiC interface layer. 0.5μm;

[0031] Step 3. Mix silicon carbide powder, zirconium diboride powder, high carbon residue resin, pore former resin, and solvent uniformly, and ball mill for 5 hours, wherein the mass parts of silicon carbide powder is 50 parts, diboride The mass parts of zirconium powder is 80 parts, the mass parts of high carbon residue resin is 10 parts, the mass parts of pore former resin is 10 parts, and the mass parts of solvent is 200 parts;

[0032] Step 4. Evenly apply the s...

Embodiment 2

[0037] The steps of the method for preparing fiber-reinforced multiphase ceramic matrix composites are as follows:

[0038] Step 1: Weaving carbon fiber fibers into a two-dimensional plain weave cloth;

[0039] Step 2: Prepare an interface layer on the surface of the carbon fiber. The interface layer has a double-layer interface layer structure. The inner interface layer is a boron nitride interface layer, the thickness of the inner interface layer is 0.5μm, and the outer interface layer is a SiC interface layer. 0.5μm;

[0040] Step 3: Mix silicon carbide powder, hafnium diboride powder, high carbon residue resin, pore former resin and solvent uniformly, and ball mill for 5 hours, wherein the mass parts of silicon carbide powder is 50 parts, diboride The mass parts of hafnium powder is 80 parts, the mass parts of high carbon residue resin is 10 parts, the mass parts of pore former resin is 10 parts, and the mass parts of solvent is 200 parts;

[0041] Step 4. Evenly apply the slurry...

Embodiment 3

[0046] The steps of the method for preparing fiber-reinforced multiphase ceramic matrix composites are as follows:

[0047] Step 1: Weaving silicon carbide fibers into a two-dimensional plain weave cloth;

[0048] Step 2: Prepare an interface layer on the surface of the carbon fiber. The interface layer has a double-layer interface layer structure. The inner interface layer is a boron nitride interface layer, the thickness of the inner interface layer is 0.5μm, and the outer interface layer is a SiC interface layer. 0.5μm;

[0049] Step 3: Mix silicon carbide powder, hafnium diboride powder, high carbon residue resin, pore former resin and solvent uniformly, and ball mill for 5 hours, wherein the mass parts of silicon carbide powder is 50 parts, diboride The mass parts of hafnium powder is 80 parts, the mass parts of high carbon residue resin is 10 parts, the mass parts of pore former resin is 10 parts, and the mass parts of solvent is 200 parts;

[0050] Step 4. Evenly apply the slu...

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Abstract

The invention relates to a method for preparing a fiber reinforced multiphase ceramic matrix composite material. The method comprises the following steps: using a carbon fiber or silicon carbide fiberas a reinforcement, and combining a slurry method to prepare a fiber prepreg, and then preparing the fiber reinforced multiphase ceramic matrix composite material by hot press forming, carbonizationand infiltration. The powder body such as ZrB2, ZrC, HfB2, and HfC are directly added into a slurry, thereby introducing an ultra-high temperature component, and improving the ultra-high temperature resistance of the composite material. The method overcomes the defects of long preparation period and high cost of the traditional fiber reinforced ultra-high temperature ceramic matrix composite material, and can prepare the ultra-high temperature ceramic matrix composite material with excellent performances in a short cycle and low cost.

Description

Technical field [0001] The invention is a method for preparing a fiber-reinforced multiphase ceramic matrix composite material, which belongs to the technical field of composite material preparation. Background technique [0002] Silicon carbide fiber-reinforced ceramic matrix composites have a wide range of applications. Because of their high temperature resistance, good toughness, and excellent oxidation resistance, they are widely used in aero engines, aerospace planes and rocket jets. Usually if the matrix It is a silicon carbide matrix. The use temperature of the composite material does not exceed 1650℃. By adding ultra-high temperature ceramic components, such as ZrC, HfC, etc., to the matrix, the composite ceramic matrix composite material can greatly increase the use temperature of the material. . [0003] Patent CN10397997A introduces a C / SiC-HfB 2 -HfC multiphase ceramic matrix composite material preparation method, firstly adopt the vacuum pressure impregnation method t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/84C04B35/58C04B41/87
CPCC04B35/806C04B35/58078C04B41/009C04B41/5096C04B41/87C04B2235/3826C04B2235/386C04B2235/48C04B2235/5244C04B2235/5248C04B41/5071C04B41/4523
Inventor 杨金华焦健姜卓钰刘虎焦春荣吕晓旭周怡然杨瑞
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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