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Flexible metal composite fiber porous material as well as preparation method and application thereof

A composite fiber and flexible metal technology, which is applied in the field of metal porous materials, can solve the problems of fiber preparation and sintering into felt, and achieve the effects of easy operation, avoiding falling off, and improving interface bonding strength

Pending Publication Date: 2020-11-17
WESTERN METAL MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to its low plasticity and high melting point (up to 3410°C), tungsten fibers are very difficult to prepare and sinter into felts, and flexible tungsten fiber porous materials have not been reported.

Method used

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  • Flexible metal composite fiber porous material as well as preparation method and application thereof
  • Flexible metal composite fiber porous material as well as preparation method and application thereof
  • Flexible metal composite fiber porous material as well as preparation method and application thereof

Examples

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preparation example Construction

[0034] The present invention provides a method for preparing the flexible metal composite fiber porous material described in the above technical solution. When prepared by magnetron sputtering, it includes the following steps:

[0035] Using a high-purity tungsten target as a sputtering source and argon as a working gas, depositing a tungsten layer by magnetron sputtering on the flexible base layer of the metal porous material to obtain the flexible metal composite fiber porous material;

[0036] When it is prepared by chemical vapor deposition, it includes the following steps: using the precursor gas of tungsten and reducing gas as the reaction gas, passing through the carrier gas, performing chemical vapor deposition on the flexible base layer of the metal porous material, and forming tungsten on the surface of the metal fiber. deposition layer to obtain the flexible metal composite fiber porous material; the precursor gas of the tungsten is tungsten halide gas.

[0037] In ...

Embodiment 1

[0060] Three strands of Cu fiber filaments with a diameter of 12 μm were twisted to make Cu yarns, which were used as a flexible substrate for magnetron sputtering. The process is as follows:

[0061] First, the Cu yarn is subjected to alkali washing (5wt% sodium hydroxide solution) to remove oil, then pickling (5wt% hydrochloric acid) to remove the oxide layer, and finally deionized water to clean and dry;

[0062] The Cu yarn after pretreatment is wound on the I-shaped wheel and placed in the magnetron sputtering device; the target material is pure tungsten target, the sputtering power is 200W, the pressure is 5Pa, the protective atmosphere is argon, and the Cu yarn on the I-shaped wheel The fiber bundle is pulled through the tungsten target (W), and the tungsten produced by magnetron sputtering is deposited on the Cu fiber and interfacially bonded to obtain a flexible Cu / W composite yarn (such as figure 1 Shown) is wound on another I-shaped wheel, and the axis directions of...

Embodiment 2

[0066] The stainless steel fiber needle-punched felt with a porosity of 80% and a wire diameter of 8 μm is used as a flexible base layer, which is firstly washed with alkali (5wt% sodium hydroxide solution) to remove oil, and then acid washed (5wt% hydrochloric acid) to remove the oxide layer , and finally cleaned with deionized water, dried and placed in a closed reaction chamber of a chemical vapor deposition (CVD) device for deposition. The process is as follows:

[0067] Will WF 6 After being heated above the boiling point and vaporized, it is passed into the reaction chamber, and evenly dispersed on the preheated stainless steel fiber needle felt. The stainless steel fiber felt is heated to a deposition temperature of 500°C, and then H 2 and carrier gas Ar, WF 6 and H 2 The molar ratio is 1:4, the carrier gas Ar rate is 1L / min, chemical vapor deposition is carried out, the reaction pressure is 300Pa, H 2 The rate is 1.5L / min, WF 6 The rate is 2 g / min, the deposition r...

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Abstract

The invention provides a flexible metal composite fiber porous material as well as a preparation method and application thereof, and relates to the technical field of metal porous materials. The flexible metal composite fiber porous material provided by the invention comprises a metal porous material flexible base layer and a tungsten deposition layer metallurgically bonded on the fiber surface ofthe metal porous material flexible base layer through magnetron sputtering or chemical vapor deposition. The metal porous material flexible base layer comprises metal fiber yarns, metal fiber fabrics, metal fiber cotton or metal fiber nets. According to the flexible metal composite fiber porous material provided by the invention, the tungsten layer is deposited on the metal porous material flexible base layer, the flexible base layer has good air permeability, flexibility and machinability, and the tungsten layer wraps the surface layer of the metal fiber, so that the flexibility of a core part is maintained, and the characteristics of thermal shock resistance, radiation resistance and the like of the tungsten layer can be fully exerted. According to the flexible metal composite fiber porous material provided by the invention, the flexibility of the tungsten fiber porous material is successfully realized.

Description

technical field [0001] The invention relates to the technical field of metal porous materials, in particular to a flexible metal composite fiber porous material and its preparation method and application. Background technique [0002] Tungsten (W) has a typical body-centered cubic structure, high density, high melting point, high hardness, small thermal expansion coefficient, corrosion resistance, excellent oxidation resistance and electrical and thermal conductivity, etc. It has been used in aerospace, electronics, chemical industry, etc. fields are widely used. The flexible metal fiber porous material has the characteristics of high porosity, good flexibility, temperature resistance and corrosion resistance, and is a very good material for liquid filtration and flue gas dust removal. Since flexible metal fiber porous materials and tungsten have many special structural and functional properties mentioned above, if tungsten can be made into flexible tungsten fiber porous ma...

Claims

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Application Information

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IPC IPC(8): C23C14/35C23C14/16C23C16/14C23C14/02C23C14/50C23C14/58C23C16/56G21F1/12
CPCC23C14/35C23C14/165C23C16/14C23C14/021C23C14/505C23C14/5806C23C16/56G21F1/125
Inventor 葛鹏高建平席锦会王晓哲
Owner WESTERN METAL MATERIAL
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