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Method and device for realizing double-component coat on SiC fibre surface

A fiber surface, two-component technology, applied in the field of deep processing of SiC fibers, can solve the problems of high cost and low efficiency, achieve strict thickness control, stable technical performance, and reduce production costs

Inactive Publication Date: 2008-02-13
魏永芬
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  • Abstract
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Problems solved by technology

The current technical means are only reprocessing with the help of the existing production process and equipment of SiC fiber, which is high in cost and low in efficiency.

Method used

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  • Method and device for realizing double-component coat on SiC fibre surface

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Embodiment Construction

[0019] It can be clearly seen with the help of the accompanying drawings that the method designed by the present invention to realize the two-component coating on the surface of SiC fibers is to heat the moving tungsten wire 12 by means of a radio frequency focused heating device, and utilizes vapor deposition The process of generating SiC fibers by method, the key steps are:

[0020] (1) The structure of the quartz tube thermal reactor in the radio frequency focused heating device is modified so that the heating reaction zone has three independent vapor deposition zones that are sealed and isolated by the argon gas filled in the argon gas seal. ,

[0021] (2) by means of the tungsten wire 12 heated by the traction and focusing radio frequency electric field of the wire feeding and receiving mechanism (10, 11) passing through three vapor deposition areas successively,

[0022] (3) Zone I is the SiC fiber layer forming zone. By introducing the mixed gas of chlorosilane and hig...

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Abstract

The invention relates to a method and a device for realizing a two-component coating on the surface of SiC fibers, and is applied to the field of deep processing of SiC fibers. The method is to heat the moving tungsten wire with the help of a radio frequency focused heating device, and utilizes the process of forming SiC fibers by vapor deposition: (1) The quartz tube thermal reactor is transformed into three air-tight isolation areas, (2) The tungsten wire heated by the radio frequency electric field passes through three vapor deposition areas in sequence, (3) SiC deposition is realized in the I area to form a SiC fiber layer on the surface of the tungsten wire, (4) the designed inner coating component is deposited in the II area On the surface of the SiC fiber layer, (5) III area is the designed outer coating component deposited on the inner coating surface layer of the SiC fiber layer. The supporting special device is mainly to improve the quartz tube thermal reactor in the radio frequency focused heating device. Specifically, the quartz tube reactor is equipped with a two-way sealed argon gas sealing plug. Port, the position behind the plug is provided with a reaction mixed gas inlet and an additional reaction gas discharge port.

Description

technical field [0001] The invention relates to the technology of deep processing SiC fiber. Specifically, it is a method and device for realizing two-component coating on the surface of SiC fiber Background technique [0002] SiC fiber has become the first choice for high-strength composite materials due to its unique high specific strength and high elastic modulus, and has been widely used. Especially in the field of aviation and aerospace, especially in the military industry, it occupies a special position. But its price is too expensive, it can only be used as the skeleton of composite materials. In order to improve its bonding strength with composite substrates, such as titanium, the surface of SiC fibers must be coated with an excessive layer of iron. In order to improve its absorption performance of high-frequency electromagnetic waves, a carbon coating is applied to its surface. If it is required to have a good composite of SiC fiber and titanium alloy, and to ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C25/22C22C47/04
Inventor 魏永芬
Owner 魏永芬
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