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Process and equipment for coating silicon carblde on carbon fiber surface

A technology of carbon fiber and silicon carbide, which is applied in the direction of fiber chemical characteristics, metal material coating process, coating, etc., can solve the problems of material mechanical property degradation, mechanical property threat, easy oxidation, etc.

Inactive Publication Date: 2003-12-17
陈新谋
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The new device and process did not change the chemical properties of graphitized carbon fibers produced by traditional methods
In particular, it is easy to oxidize in a high temperature environment, which seriously threatens and destroys its mechanical properties. When it is combined with metal materials, it will react strongly, which will reduce the mechanical properties of the composite material.

Method used

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  • Process and equipment for coating silicon carblde on carbon fiber surface
  • Process and equipment for coating silicon carblde on carbon fiber surface

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Experimental program
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Embodiment Construction

[0007] It can be seen from the structural diagram of the special device for radio frequency heating shown in accompanying drawing 1 that when the carbon fiber (graphite fiber) 9 passes through the quartz tube reactor 5, it is easy to be inductively heated to 1100° C. to 1300° C. in the radio frequency concentration area. This adjustment is convenient, quick and accurate. It is easy to make the carbon fiber 9 reach the temperature required for the reaction, and the special quartz tube reactor 5 is easy to reversely introduce the mixed gas of chlorosilane and high-purity hydrogen along the moving direction of the carbon fiber 9, and form a reaction atmosphere in the quartz tube 5, In this way, as the carbon fiber moves, the Sic coating is evenly and firmly attached to the surface of the carbon fiber, forming a surface Sic coating.

[0008] The carbon fiber 9 is moved by means of the winding and unwinding mechanisms 10 and 11, and passes through the quartz tube reactor 5, and its...

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Abstract

A process and equipment for coating a silicon carbide layer on the surface of carbon fibre is disclosed. Said equipment is an improved RF focusing heater. Said process features that a focused electromagnetic field is used to heat the carbon fibre to 1100-1300 deg.C while a reaction environment of chlorosilane and high-purity hydrogen gas is formed in quartz tube or reactor to crack the chlorosilane into hydrogen chloride while to deposit silicon carbide on the surface of carbon fibre.

Description

technical field [0001] The invention belongs to the further perfection and supplement of the carbon fiber graphitization process by the radio frequency method, and is also the improvement of the existing radio frequency equipment for producing high-quality graphite fibers. Background technique [0002] The processing technology of carbon fiber graphitization has made great progress after adopting the radio frequency method, which greatly reduces the energy consumption in the production process, improves the quality, and reduces the cost, which is very conducive to the promotion of the application range of graphitized carbon fiber . As a structural material with excellent mechanical properties, it has indeed made great progress compared with the traditional graphite electric furnace production. The new device and process did not change the chemical properties of graphitized carbon fibers produced by traditional methods. In particular, it is easily oxidized in a high-tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C16/32D01F11/12
Inventor 陈新谋
Owner 陈新谋