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A preparation method of electrodepositing high permeability iron-nickel alloy film on aluminum matrix composite material

A technology of aluminum-based composite materials and iron-nickel alloys, applied in the application of magnetic films to substrates, shielding materials, metal material coating processes, etc., can solve problems such as poor magnetic field shielding performance, achieve low cost, and simple operation process , High magnetic shielding effect

Inactive Publication Date: 2018-12-21
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the magnetic field shielding performance of the existing aluminum-based composite material is very poor, and to provide a preparation method for electrodepositing a high-permeability iron-nickel alloy film on the aluminum-based composite material

Method used

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  • A preparation method of electrodepositing high permeability iron-nickel alloy film on aluminum matrix composite material
  • A preparation method of electrodepositing high permeability iron-nickel alloy film on aluminum matrix composite material
  • A preparation method of electrodepositing high permeability iron-nickel alloy film on aluminum matrix composite material

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specific Embodiment approach 1

[0021] Specific Embodiment 1: In this embodiment, a method for preparing an electrodeposited high-permeability iron-nickel alloy film on an aluminum-based composite material is carried out according to the following steps: 1. Remove oil stains on the surface of the aluminum-based composite material: the ceramic particles are reinforced with aluminum The matrix composite material is immersed in a mixed solution A at a temperature of 60-85°C for 2-3 minutes to obtain a ceramic particle-reinforced aluminum matrix composite material that removes surface oil; the mixed solution A is composed of Na 3 PO 3 and Na 2 SiO 3 Mixed, Na in mixed solution A 3 PO 3 The concentration is 40~60g / L, Na 2 SiO 3 The concentration is 15~30g / L;

[0022] 2. Pickling and light removal: at room temperature, the ceramic particle-reinforced aluminum matrix composite material that removes surface oil is immersed in HNO 3 Pickling in the solution for 40-50s to obtain the pickled ceramic particle rei...

specific Embodiment approach 2

[0029] Specific embodiment two: the difference between this embodiment and specific embodiment one is: HNO in step two and step four 3 The solution volume concentration is 50%. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0030] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that Na in the mixed solution A 3 PO 3 The concentration is 45~55g / L, Na 2 SiO 3 The concentration is 20~25g / L. Others are the same as those in the first or second embodiment.

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Abstract

The invention relates to a preparation method of electrodepositing high permeability iron-nickel alloy thin film on aluminum matrix composite material. The purpose of the invention is to solve the problem that the magnetic field shielding performance of the existing aluminum matrix composite material is very poor. The preparation method of the invention comprises the following steps: 1, removing the surface oil stain of the aluminum matrix composite material; 2, performing acid pickling light; 3, zinc dipping; 4, acid washing; 5, secondary zinc dipping; 6, electroplating an iron-nickel alloy;And 7, sealing. A Fe-Ni alloy film with high permeability is electrodeposited on an aluminum matrix composite material to form a structure of high magnetic conductivity, non-magnetic conductivity andhigh magnetic conductivity, and high magnetic shielding effect is realized through secondary shunting action. The invention is applied to the technical field of surface electrodeposition treatment.

Description

technical field [0001] The invention relates to a preparation method for electro-depositing a high-permeability iron-nickel alloy thin film on an aluminum-based composite material. Background technique [0002] The prominent feature of the development of modern industrial technology is the wide application of electronic and electrical equipment and the exponential growth of information exchange. These equipment will generate various electromagnetic waves during work, which will cause electromagnetic interference to other sensitive components around them, and even fail their functions. In addition, large-scale industrial facilities will produce high-power electromagnetic radiation and low-frequency magnetic fields, which will also cause harm to the human body. [0003] Shielding is an effective means to solve the problem of electromagnetic hazards. Compared with electric field screen shielding, magnetic field shielding is more difficult. Unlike the electric field, the magne...

Claims

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Application Information

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IPC IPC(8): H01F41/26H05K9/00C25D3/56C25D5/48C23C18/52C23C28/02
CPCC23C18/52C23C28/021C25D3/562C25D5/48H01F41/26H05K9/0075
Inventor 张强孙凯罗树斌武高辉
Owner HARBIN INST OF TECH
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