Method for manufacturing unit doublet carbide codeposition fibre-reinforced composite

A composite material and fiber-reinforced technology, applied in metal material coating process, gaseous chemical plating, coating, etc., to achieve high temperature strength, simple technical process, and wide application

Inactive Publication Date: 2008-04-02
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the international tendency is to coat refractory carbide (such as HfC, TaC) coatings on C/C composites as en

Method used

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  • Method for manufacturing unit doublet carbide codeposition fibre-reinforced composite

Examples

Experimental program
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Example Embodiment

[0015] Example 1: Refer to Figure 1 and Figure 2, take a 3D woven C fiber woven body, cut it into a Φ(70-100)×65mm ring sample, weigh it, and put it in a chemical vapor deposition furnace; Below 50Pa, heat to 1100°C, first deposit CVD-C, and pass Ar and C in a ratio of 3:1 3 H 6 Carry out CVD-C deposition, keep the furnace pressure at 1000~2000Pa and deposit for 20hr; then carry out TaC-SiC co-deposition, using Ar as carrier gas to remove TaCl 5 Introduce into the furnace and add C at the same time 3 H 6 And reducing gas H 2 , Use H 2 As carrier gas, CH 3 SiCl 3 (MTS) is brought into the deposition furnace by another pipeline, Ar is used as dilution gas, H 2 The ratio with Ar is 1:(1~5), H 2 : MTS≥10, keep the furnace pressure 500~1000Pa for 60hrs; stop the deposition; continue to pass Ar for 30min, vacuum and cool down; when it reaches room temperature, open the furnace for sampling, weighing and testing. The car removes the carbide skin on the inner and outer surface layers of t...

Example Embodiment

[0018] Example 2: With reference to Figure 1, take a 4D woven SiC fiber woven body, cut it into a Φ(70-100)×65mm ring sample, weigh it, and put it in a chemical vapor deposition furnace; vacuum it to below 50Pa, Warm up to 1300°C for TaC-HfC co-deposition, and use Ar as carrier gas to remove TaCl 5 Introduce into the furnace while adding CH 4 And reducing gas H 2 , Using Ar as carrier gas to HfCl 4 Introduce the deposition furnace from another way, and add CH at the same time 4 And reducing gas H 2 , Ar is used as the diluent gas, keep the furnace pressure 500~1000Pa for deposition 60hr; stop the deposition; continue to pass Ar for 30min, vacuum and cool down; when it reaches room temperature, open the furnace for sampling, weighing and testing. The car removes the carbide skin on the inner and outer surface layers of the diameter, ultrasonically cleans and dries, and puts it in a deposition furnace to continue deposition, repeating TaC-HfC co-deposition many times. Then a dense S...

Example Embodiment

[0019] Example 3: Referring to Figure 1, take a 4D woven boron B fiber (or tungsten W wire) woven body, cut into a Φ(70-100)×65mm ring sample, weigh it, and put it in a chemical vapor deposition furnace ; Other processes are the same as in Example 2, and a densely structured B fiber (or tungsten W wire) reinforced TaC-HfC co-deposition composite material can be obtained.

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Abstract

The invention relates to a preparation method for making unit doublet carbide codeposition fiber reinforcement composite material through chemical gas phase permeation/deposition process, wherein, codeposition unit doublet carbide is obtained inside a preformed billet body made of C fiber, boron fiber, ceramic fiber and metal fiber, etc. by use of the designability of chemical gas phase permeation/deposition process to make fiber-reinforcement unit doublet carbide composite material; the carbide is the combination of any two sorts of carbide of HfC, TaC, ZrC, NbC, WC, TiC, B4C, VC, AlC and SiC, etc. The material made through the method is characterized by high temperature resistance, wear resistance, anti scour, antioxidation, ablation resistance and excellent thermal shock resistance.

Description

Technical field: [0001] The invention relates to a chemical vapor infiltration / deposition process for manufacturing binary carbide co-deposition fiber-reinforced composite materials, which are mainly used for functional structural parts that require high temperature, high hardness, anti-oxidation, anti-ablation and the like. Background technique: [0002] Chemical vapor deposition is chemically synthesizing materials at the atomic and molecular levels, so materials can be designed and prepared at the nanometer level; the preparation process can ensure the controllability and reproducibility of composition and structure; the material preparation and device production are consistent; equipment It is relatively simple, easy to operate, and easy to realize automatic control. Another advantage of preparing materials by chemical vapor deposition is that they can be prepared at temperatures much lower than the melting point of the material. For example, the melting point of TaC is...

Claims

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Application Information

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IPC IPC(8): C23C16/32C23C16/52C23C16/448
Inventor 李国栋熊翔陈昭科黄伯云张红波肖鹏
Owner CENT SOUTH UNIV
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