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A kind of preparation method of ag/tio2/au coating with trap structure

A technology of traps and coatings, applied in coatings, metal material coating processes, liquid chemical plating, etc., can solve the problems of poor environmental stability of trap structure silver, achieve improved secondary electron suppression characteristics, and good process stability , the effect of easy operation

Inactive Publication Date: 2019-02-01
SHAANXI UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the environmental stability of trap-structured silver is generally poor

Method used

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  • A kind of preparation method of ag/tio2/au coating with trap structure
  • A kind of preparation method of ag/tio2/au coating with trap structure
  • A kind of preparation method of ag/tio2/au coating with trap structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Use 50mL of detergent, deionized water, acetone and ethanol in sequence to ultrasonically clean the silver-plated aluminum alloy with a size of 20mm in length, 12mm in width and 1mm in height, for 15 minutes each.

[0033] (2) adopt 12g mass fraction to be 20% Fe(NO 3 ) 3 Etch the silver-plated aluminum alloy after cleaning in step (1) with an aqueous solution. The etching temperature is 45°C and the etching time is 35s. Then, the silver-plated aluminum alloy is cleaned with deionized water and ultrasonically cleaned for 3 minutes. Dry in medium for 30min.

[0034] (3) adopt 12g mass fraction to be 20% Fe(NO 3 ) 3 Etch the silver-plated aluminum alloy dried in step (2) with an aqueous solution, the etching temperature is 45°C, and the etching time is 35s, then the silver-plated aluminum alloy is cleaned with deionized water and ultrasonically cleaned for 3 minutes, and finally dried in an oven at 50°C Dry in medium for 30min to form a trap structure on the surfa...

Embodiment 2

[0038] (1) Use 50mL of detergent, deionized water, acetone and ethanol in order to ultrasonically clean the silver-plated aluminum alloy with a size of 20mm in length, 12mm in width and 1mm in height, for 15 minutes each.

[0039] (2) adopt 12g mass fraction to be 40% Fe(NO 3 ) 3Etch the silver-plated aluminum alloy after cleaning in step (1) with an aqueous solution. The etching temperature is 55°C and the etching time is 45s. Then, the silver-plated aluminum alloy is cleaned with deionized water and ultrasonically cleaned for 3 minutes. Dry in medium for 30min.

[0040] (3) adopt 12g mass fraction to be 40% Fe(NO 3 ) 3 Etch the silver-coated aluminum alloy dried in step (2) with an aqueous solution. The etching temperature is 55°C and the etching time is 45s. Then, the silver-plated aluminum alloy is cleaned with deionized water and ultrasonically cleaned for 3 minutes. Dry in medium for 30min to form a trap structure on the surface of silver-plated aluminum alloy.

[0...

Embodiment 3

[0044] (1) Use 50mL of detergent, deionized water, acetone and ethanol in sequence to ultrasonically clean the silver-plated aluminum alloy with a size of 20mm in length, 12mm in width and 1mm in height, for 15 minutes each.

[0045] (2) adopt 12g mass fraction to be 30% Fe(NO 3 ) 3 Etch the silver-plated aluminum alloy after cleaning in step (1) with an aqueous solution. The etching temperature is 50°C and the etching time is 40s. Then, the silver-plated aluminum alloy is cleaned with deionized water and ultrasonically cleaned for 3 minutes. Dry in medium for 30min.

[0046] (3) adopt 12g mass fraction to be 20% Fe(NO 3 ) 3 Etch the silver-plated aluminum alloy after cleaning in step (2) with an aqueous solution. The etching temperature is 50°C and the etching time is 40s. Then, the silver-plated aluminum alloy is cleaned with deionized water and ultrasonically cleaned for 3 minutes. Dry in medium for 30min to form a trap structure on the surface of silver-plated aluminum...

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Abstract

The invention discloses a preparation method of an Ag / TiO2 / Au coating of a trap structure. The surface of silver-coated aluminum alloy is treated through a two-step wet chemical etching method, so that a trap structure is formed on the surface of the silver-coated aluminum alloy; then a TiO2 film transition layer is prepared on the surface of the trap structure through a quasi-chemical plating method, so that profile-followed deposition of the TiO2 film on the surface of the trap structure is achieved; and finally, an Au film is deposited on the surface of TiO2 through a chemical plating method in a profile-followed mode, so that the Ag / TiO2 / Au coating of the trap structure is formed on the surface of the silver-coated aluminum alloy is formed, and the secondary electron inhibiting characteristic and environment stability of the surface of the silver-coated aluminum alloy are improved.

Description

technical field [0001] The invention relates to a trap structure Ag / TiO 2 / Au coating preparation method, especially related to the construction of trap structure Ag / TiO on the surface of silver-plated aluminum alloy 2 / Au coating to improve the secondary electron suppression characteristics and environmental stability of the silver-plated aluminum alloy surface. Background technique [0002] Silver-plated aluminum alloy, as the commonly used substrate for microwave components in satellite payload systems, has the advantage of reducing device loss, but in actual use, silver-plated components are prone to secondary electron multiplication under the condition of high-power electromagnetic wave transmission. A micro-discharge effect is generated, leading to failure of high-power microwave components. The current methods for suppressing the microdischarge effect mainly include building a coating on the surface of the component and building a trap structure on the surface of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/04C23C18/12C23C18/44C23F1/14
CPCC23C18/04C23C18/1216C23C18/1241C23C18/1254C23C18/165C23C18/44C23F1/14
Inventor 马建中吴朵朵鲍艳崔万照胡天存杨晶
Owner SHAANXI UNIV OF SCI & TECH
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