Method for preparing Fe-Ni soft-magnetic material with high anti-corrosion capability

A soft magnetic material and capability technology, which is applied in the manufacture of permanent magnets, the magnetism of inorganic materials, and the manufacture of inductors/transformers/magnets. , good single phase, uniform dispersion effect

Inactive Publication Date: 2018-03-09
SUZHOU NANER MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There will be hydrogen evolution effect during the pretreatment and electroplating process, and the generated hydrogen will infiltrate and adsorb in the micropores on the surface of the substrate. When the concentration is high, the adsorbed hydrogen will overflow due to expansion, which will generate a pressure on the coating, causing the coating to protrude from the substrate, forming bulging and foaming, resulting in failure of the coating and seriously affecting the anti-corrosion ability of the coating.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Get ferric chloride, oxalic acid and nickel chloride to be dissolved in hydrochloric acid solution, the mol ratio of standby ferric chloride, oxalic acid and nickel chloride is clarified after ultrasonic dispersion is 3:2:1, and the molar concentration of hydrochloric acid is 1.6 mol / L, The ratio of the total molar amount of ferric chloride, oxalic acid and nickel chloride to hydrochloric acid is 1:3.

[0027] Add complexing agent after the solution is clarified, add acrylamide after the complexing agent is completely dissolved, ultrasonically disperse evenly and clarify, the molar ratio of complexing agent, ferric chloride, nickel chloride and acrylamide is 1:1 : 6; adjust the pH to 2 with ammonia water, and finally heat the mixed solution at 60° C. to cause a thermal polymerization reaction, and the solution turns into a gel.

[0028] Dry the gel in a constant temperature drying oven at 110°C for 7 hours, then place it in a high-temperature furnace at 430°C for 50 min...

Embodiment 2

[0033] Get ferric chloride, oxalic acid and nickel chloride to be dissolved in hydrochloric acid solution, the mol ratio of standby ferric chloride, oxalic acid and nickel chloride is clarified after ultrasonic dispersion is 5:4:2, and the molar concentration of hydrochloric acid is 1.9 mol / L, The ratio of the total molar amount of ferric chloride, oxalic acid and nickel chloride to hydrochloric acid is 3:10.

[0034] Add a complexing agent after the solution is clarified, add acrylamide after the complexing agent is completely dissolved, ultrasonically disperse evenly and clarify, the molar ratio of complexing agent, ferric chloride, nickel chloride and acrylamide is 2:1 : 8; adjust the pH to 3 with ammonia water, and finally heat the mixed solution at 80° C. to cause thermal polymerization to occur, and the solution turns into a gel.

[0035] Dry the gel in a constant temperature drying oven at 120°C for 9 hours, then place it in a high-temperature furnace at 460°C for 70 mi...

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Abstract

The invention discloses a method for preparing a Fe-Ni soft-magnetic material with high anti-corrosion capability. NiFe2O4 magnetic nanoparticles are prepared by adopting an improved sol-gel method and are good in single-phase property and relatively uniform in dispersion; the method is simple and is relatively low in cost compared with the prior art. In addition, the surface of soft magnetic alloy is electroplated with a coating, the bubbling and blistering of the plating caused by a hydrogen evolution effect are avoided, and the corrosion resistance of the soft magnetic alloy is improved.

Description

technical field [0001] The invention relates to the field of magnetic material manufacturing, in particular to a method for preparing an iron-nickel soft magnetic material with high corrosion resistance. Background technique [0002] Since its inception, iron-based nanocrystalline soft magnetic alloy materials have received great attention and in-depth research due to their characteristics of high saturation magnetic induction, high magnetic permeability, low loss, and low coercive force, and have been widely used in switching power supplies. and electromagnetic sensors. [0003] NiFe 2 o 4 Type ferrite is a material with important application prospects. Because of their high magnetic permeability and low hysteresis loss, they are widely used in mutual inductance devices, soft magnetic substrate bearings, transfer switches, and magnetic recording. Currently, the preparation of NiFe 2 o 4 There are many methods for nano-powder, such as mechanical alloying method can pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/37H01F41/02C25D5/20C25D7/00
CPCH01F1/37C25D5/20C25D7/001H01F41/026H01F41/0266
Inventor 不公告发明人
Owner SUZHOU NANER MATERIAL TECH CO LTD
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