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Metallized ceramic matrix composite material and curved surface metallization method

A composite material and ceramic-based technology, which is applied in the field of metallized ceramic-based composite materials and surface metallization, can solve the problems of high cost, strong equipment dependence, low preparation precision, etc., and achieves low cost, wide application range, good durability The effect of high temperature performance

Active Publication Date: 2021-03-26
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN104934721A puts the polyimide copper-clad film as an interlayer between the prepreg layers for integrated layer integration. The preparation accuracy of this method is low, and the use temperature generally does not exceed 500°C, so it cannot be used at higher temperatures.
The above method is highly dependent on equipment and high in cost

Method used

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  • Metallized ceramic matrix composite material and curved surface metallization method
  • Metallized ceramic matrix composite material and curved surface metallization method
  • Metallized ceramic matrix composite material and curved surface metallization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) According to the shape of the ceramic matrix composite substrate, the same structure and size template is made by an aluminum alloy, and the region that needs to be metallized is formed into a groove in a manner, and the groove depth is 1-5 mm.

[0050] (2) Adhesive film on the mold plate, the film thickness of 0.01-0.1 mm, and precisely cut off the protective film above the template groove.

[0051] (3) Transfer the film from the template to the surface of the substrate, the film film must be fully bonded to the substrate to ensure the accuracy of the metal layer size.

[0052](4) According to the shape of the outer shape of the ceramic matrix composite substrate, the coating film width is 50-100 mm, the thickness of the coating film is 5-10 μm, and the film accuracy is ± 2 μm. The examples of the coating film are valid for 100 mm, and the total length is 120 mm.

[0053] (5) The silver paste is evenly applied to SiO using the above-mentioned curved coating membrane. 2...

Embodiment 2

[0056] (1) According to the surface shape of the ceramic matrix composite substrate, a template of the same structure and size is made by nylon, and the region that needs to be metallized is formed into a groove, and the groove depth is the substrate thickness.

[0057] (2) Adhesive film on the mold plate, the film thickness of 0.01-0.1 mm, and precisely cut off the protective film above the template groove.

[0058] (3) Transfer the film from the template to the surface of the substrate, the film film must be fully bonded to the substrate to ensure the accuracy of the metal layer size.

[0059] (4) According to the outer shape of the ceramic base composite substrate, the single-sided coating film is bonded, the effective coating film width is 50-100 mm, the thickness of the coating film is 20-30 μm, and the coating film accuracy is ± 2 μm.

[0060] (5) Use the above-mentioned curved coating membrane to uniformly apply the silver palladium paste in SiO 2f / Sio 2 The surface of th...

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Abstract

The invention provides a metallized ceramic matrix composite material and a curved surface metallization method. The method comprises the steps of manufacturing a template consistent with a ceramic matrix composite substrate in structure and size, machining a groove in the template, laying a protective film on the surface of the template, cutting off the protective film above the groove of the template, transferring the protective film from the template to the surface of the substrate, metallizing the substrate and the like. The metallization method disclosed by the invention does not depend on equipment, is simple, convenient and low in cost, and has important significance for researching a high-temperature-resistant frequency selective surface radome, a high-temperature-resistant conformal antenna and the like.

Description

Technical field [0001] The present invention relates to a method of metallized ceramic matrix composite and curved metal, belonging to the surface metallization of the composite surface. Background technique [0002] As the communication assembly required for the future aircraft toward miniaturization, light weight, high reliability direction, traditional resin substrate antennas have no requirements, urgently need to study high temperature resistance, electromagnetic stability, high performance conformation of radar scattering cross section The array antenna combines the antenna to the fiber reinforced ceramic matrix composite, preparing metallization (surface metallization treatment of ceramic matrix composites, making it a metal-like conductivity), which is expected to achieve the above demand. In addition, the conformal antenna is a pneumatic and invasive performance requirements that meet the aircraft, often with complex three-dimensional curved shape, only to achieve curved...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/88
CPCC04B41/88C04B41/5116C04B41/009C04B41/5122C04B41/51C04B41/4539C04B41/5022C04B41/5031C04B41/5072C04B41/5027
Inventor 崔凤单张剑孙志强张冰清吕毅
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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