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Preparation method of nanocrystal iron-nickel-chromium alloy foil by electrodeposition

A nanocrystalline and chromium alloy technology, applied in the field of electrochemical deposition, can solve the problems of increased internal stress of alloy foil, easy cracking of alloy foil, etc. consumption effect

Inactive Publication Date: 2012-12-26
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the increase of chromium content in the alloy foil will also increase the internal stress of the alloy foil, causing the alloy foil to crack easily. Therefore, the corrosion resistance and hardness of the alloy foil need to be improved.
In addition, there is no report on iron-nickel-chromium alloy foil with higher chromium content at home and abroad.

Method used

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  • Preparation method of nanocrystal iron-nickel-chromium alloy foil by electrodeposition
  • Preparation method of nanocrystal iron-nickel-chromium alloy foil by electrodeposition
  • Preparation method of nanocrystal iron-nickel-chromium alloy foil by electrodeposition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Using titanium as cathode, sintered metal oxide RuO 2 The titanium plate is a catalytic anode, and the thickness of 20~30μm is produced by electro-deposition using the DC electrodeposition process conditions shown in Table 1 for 45 minutes, and the composition is Fe 63.12 Ni 31.41 Cr 5.46 Nanocrystalline alloy foil. After testing, the grain size is in the nanometer range, the microhardness of the coating is 573HV, the resistivity is 50-60μΩ·cm, and the corrosion current density in 5%NaCl solution is only 2.26×10 -6 A·cm -2 Excellent corrosion resistance.

[0041] Table 1 Process conditions for preparing nanocrystalline Fe-Ni-Cr alloy foil by DC

[0042]

Embodiment 2

[0044] Using titanium as cathode, sintered metal oxide InO 2 The titanium plate is a catalytic anode, and the thickness of 20~30μm is produced by electro-deposition using the DC electrodeposition process conditions shown in Table 1 for 45 minutes, and the composition is Fe 62.09 Ni 36.48 Cr 1.42 Nanocrystalline alloy foil. The corrosion current density in 5% NaCl solution is 1.45×10 -5 A·cm -2 .

[0045] Table 2 Process conditions for preparing nanocrystalline Fe-Ni-Cr alloy foil by DC

[0046]

Embodiment 3

[0048] Using titanium as cathode, sintered metal oxide InO 2 The titanium plate is a catalytic anode, and the thickness of 20~30μm is produced by the DC electrodeposition process conditions shown in Table 3 for 45min. The composition is Fe 72.5 Ni 20.13 Cr 7.37 Nanocrystalline alloy foil. The corrosion current density in 5% NaCl solution is 1.65×10 -6 A·cm -2 .

[0049] Table 3 Process conditions for preparing nanocrystalline iron-nickel-chromium alloy foil by DC

[0050]

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Abstract

The invention discloses a preparation method of a nanocrystal iron-nickel-chromium alloy foil by electrodeposition, belonging to the field of electrodeposition alloys. The electrochemical deposition method is implemented by carrying out electrodeposition in a sulfate-chloride-trivalent chromium water solution system to continuously prepare the nanocrystal iron-nickel-chromiumalloy foil. The technique for preparing the alloy foil is simple, the electrolyte is environment-friendly and stable, and the waste liquor is easy to treat. The alloy foil has the advantages of high chromium content, easily controlled components and thickness, smooth surface, excellent mechanical, electrical and magnetic properties, and excellent corrosion resistance, can partially substitute the stainless steel foil belt and the like to be widely used in the industrial fields of electronics, communication, electromechanics and the like, and can be used as an excellent magnetic material, battery framework material and electromagnetic shielding material.

Description

Technical field [0001] The invention discloses a method for preparing nanocrystalline iron-nickel-chromium alloy foil by electrodeposition. The electrochemical deposition method is used to continuously prepare nanocrystalline iron-nickel-chromium in a sulfate-chloride-trivalent chromium aqueous solution system Alloy foil. It belongs to the field of electrochemical deposition technology. Background technique [0002] The process and theory of iron-nickel-chromium alloy electrodeposition began in the 1960s and 1970s. The iron-nickel-chromium alloy coating was electrodeposited in a sulfate bath system; it developed rapidly in the mid-1980s. Fe-Ni-Cr alloy coatings deposited by chloride, DMF aqueous solution, and chloride-sulfate mixed system appeared. However, the previous researches on electrodeposition of iron-nickel-chromium alloy mainly focused on the exploration and research of alloy coating process, and almost did not involve the preparation of ternary alloy foil. This is ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D1/04C25D3/56C25D17/10
Inventor 邓姝皓刘晗叶晓慧龚竹青
Owner CENT SOUTH UNIV
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