Preparation method of iron-nickel-cobalt-molybdenum alloy foil by electrodeposition

An alloy foil, molybdenum alloy technology, applied in electroforming, electrolysis process and other directions, can solve problems such as reports on the process and method of electrodepositing iron group metal quaternary alloy foil, etc., and achieves convenient and practical process operation and easy composition. Control, uniform thickness effect

Inactive Publication Date: 2013-08-14
HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The process and method of preparing iron group metal binary and ternary alloy foils by electrodeposition are disclosed in t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

Example 1 (The influence of ferrous sulfate content on alloy foil composition and cathode current efficiency)

The electrolyte composition is NiSO 4 ·6H 2 O 100 g / L, NiCl 2 ·6H 2 O 40 g / L, FeSO 4 ·6H 2 O 10 g / L, CoSO 4 ·7H 2 O 15 g / L, Na 2 MoO 4 ·2H 2 O 10 g / L, trisodium citrate 110 g / L, stabilizer 30 g / L, boric acid 30 g / L, saccharin 3 g / L, additive 0.02 g / L. The process conditions are J = 5 A / dm 2 , t = 30 oC, pH = 5.5

Experimental results: The components of the iron-nickel-cobalt-molybdenum alloy foil are: Fe 20.2%, Ni 58.4%, Co 15.7%, Mo5.7%.

The iron-nickel-cobalt-molybdenum alloy foil is 50μm thick, uniform in thickness, smooth and bright, and has strong corrosion resistance. The grain size is also in the nanometer range, the resistivity is 50-100 μΩ·cm, the magnetic saturation strength is 1.25 Tesla, and the The tensile strength is 794.85MPa, and the elongation is 6.67%.

Example Embodiment

Example 2 (The influence of nickel sulfate content on alloy foil composition and cathode current efficiency)

The electrolyte composition is NiSO 4 ·6H 2 O 100 g / L, NiCl 2 ·6H 2 O 40 g / L, FeSO 4 ·6H 2 O 10 g / L, CoSO 4 ·7H 2 O 15 g / L, Na 2 MoO 4 ·2H 2 O 10 g / L, trisodium citrate 110 g / L, stabilizer 30 g / L, boric acid 30 g / L, saccharin 3 g / L, additive 0.02 g / L. The process conditions are J = 5 A / dm 2 , t = 30 oC, pH = 5.5

Experimental results: The components of the iron-nickel-cobalt-molybdenum alloy foil are: Fe 23.8%, Ni 36.4%, Co 15.6%, Mo24.2%. The surface of the alloy foil is relatively flat, the structure is compact, and the particles are very small and agglomerate into large particles. The particle size is 3.8nm, which is nanocrystalline. The X-ray diffraction peaks are broadened, and the alloy structure is between microcrystalline and amorphous.

The electrical resistivity is 50-100 μΩ·cm, the magnetic saturation strength is 1.25 Tesla, the tensile strength is 794.85M...

Example Embodiment

Example 3

The electrolyte composition is NiSO 4 ·6H 2 O 70 g / L; NiCl 2 ·6H 2 O 35 g / L; FeSO 4 ·7H 2 O 10 g / L; Na 2 MoO 4 ·2H 2 O 10 g / L; CoSO 4 ·7H 2 O 15 g / L; trisodium citrate 125 g / L; stabilizer 30 g / L; boric acid 30 g / L; saccharin 3 g / L; additive 0.02 g / L; process conditions are t = 30 oC; pH = 5; J = 2 A / dm 2

Experimental results: The components of the iron-nickel-cobalt-molybdenum alloy foil are: Fe 18.2%, Ni 52.4%, Co 15.7%, Mo10.0%. The surface of the alloy foil is relatively flat, the structure is compact, and the particle size is very small and agglomerates into large particles. The X-ray diffraction peak is wide, and the alloy structure is between microcrystalline and amorphous.

The X-ray diffraction analysis of Fe-Ni-Co-Mo alloy foil shows that there is an obvious diffraction peak near 43.5° in the XRD spectrum, and the diffraction peak shape is broadened, indicating that the alloy foil has a crystal structure with very small grains and grain size It is 5.5 nm...

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Abstract

The invention belongs to the field of electrolytic-process deposited metal materials, and relates to a preparation method of an iron-nickel-cobalt-molybdenum alloy foil by electrodeposition. The invention is characterized by adopting an electrodeposition process; the electrolyte is an acidic sulfate-chloride-sodium molybdate water solution system, a buffering agent, a complexing agent, a brightener and assistants are simultaneously added, and carbon and a titanium plate are respectively used as anode and cathode materials; and the technological parameters of electrodeposition are as follows: the temperature is 50-70 DEG C, the pH value is 3.0-4.5, the current density is 1.0-10.0 A/dm<2>, the interval between the anode and cathode is 2-3 cm, and the electrodeposition time is 60 minutes. The preparation method comprises the following steps: putting the anode and cathode in the electrolyte, passing a direct current for some time to deposit the iron-nickel-cobalt-molybdenum alloy on the cathode, taking out the cathode plate, cleaning, drying, and stripping the iron-nickel-cobalt-molybdenum alloy layer formed on the surface, thereby obtaining the iron-nickel-cobalt-molybdenum alloy foil. The alloy foil has the advantages of controllable composition, uniform thickness and bright surface, and can not easily break up or distort in shape. Compared with the calendering method, the invention has the advantages of low cost and higher physicochemical properties.

Description

technical field [0001] The invention relates to an electrodeposition preparation method of an iron-nickel-cobalt-molybdenum alloy foil, more precisely, an electrodeposition method is used to prepare iron-nickel-cobalt-molybdenum in an acidic sulfate-chloride-sodium molybdate aqueous solution Process method of alloy foil. Background technique [0002] The outermost electrons of iron group metals have d orbitals that are not filled or half filled with electrons, and molybdenum elements have paired d electrons. When iron, nickel and cobalt form alloys with molybdenum, the number of empty d states can be reduced by molybdenum. Increase the width of the energy band, form a more suitable new outermost electronic arrangement, and have better mechanical properties, electrical properties and soft magnetic properties. As a special profile, metal and alloy foils have been widely used in many fields of industry. The industrial preparation of metal and alloy foils generally adopts th...

Claims

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Application Information

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IPC IPC(8): C25D1/04C25D3/56
Inventor 许友罗北平
Owner HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
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