Nickel-phosphorus amorphous alloy composite fiber and preparation method

A composite fiber, amorphous alloy technology, applied in metal material coating process, superimposed layer plating, coating and other directions, can solve problems such as size limitations, achieve weight reduction, ensure flow and exchange, and improve catalytic efficiency. Effect

Inactive Publication Date: 2019-01-04
罗奕兵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The idea of ​​the liquid phase method is to melt the master alloy uniformly first, and then adopt the method of purification and rapid cooling to rapidly cool the alloy liquid in a short period of time. The main advantages of this type of method are that the preparation is simple and the cycle is short. The size is largely limited by the ability of the alloy to form amorphous

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: the forming process of nickel-phosphorus composite fiber

[0027] (1) Surface treatment of fibers: using φ0.01 mm polypropylene fiber, chemical degreasing and degreasing with sodium hydroxide solution;

[0028] (2) The proportion of the roughened aqueous solution is 80g / L chromic anhydride, 300ml / L sulfuric acid, the roughening treatment temperature is 60°C, and the roughening treatment time is 20 minutes;

[0029] (3) For fiber sensitization, the composition of the sensitization solution is 8g / L tin chloride, 40ml / L hydrochloric acid, and the sensitization treatment time is 3min;

[0030] (4) Silver nitrate and ammonia solution are used to activate the fiber surface, and the activated fiber is reduced by formaldehyde solution;

[0031] (5) Electroless plating of treated fibers, the solution composition is: 0.45mol / L nickel chloride, 0.3mol / L tartaric acid, 0.2mol / L hypophosphorous acid, the pH value of the titrated ammonia solution is 8.5, and the elec...

Embodiment 2

[0035] Embodiment 2: the forming process of nickel-iron-phosphorus composite fiber

[0036] (1) Surface treatment of fibers: using φ0.015 mm polypropylene fiber, chemical degreasing and degreasing with sodium hydroxide solution;

[0037] (2) The proportion of the roughened aqueous solution is 65g / L chromic anhydride and 250ml / L sulfuric acid, the roughening treatment temperature is 60°C, and the roughening treatment time is 30 minutes;

[0038] (3) For fiber sensitization, the composition of the sensitization solution is tin chloride 6.5g / L, hydrochloric acid 30ml / L, and the sensitization treatment time is 2min;

[0039] (4) Silver nitrate and ammonia solution are used to activate the fiber surface, and the activated fiber is reduced by formaldehyde solution;

[0040] (5) Electroless plating of treated fibers, the solution composition is: nickel sulfate 0.4mol / L, tartaric acid 0.35 mol / L, sodium hypophosphite 0.3mol / L, titrated ammonia solution Ph value is 8.5, and the ele...

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Abstract

The invention relates to a nickel-phosphorus amorphous alloy composite fiber. The length of the fiber is continuous, the cross section of the fiber is in circular, special-shaped or the like, the outer diameter of the composite fiber is 0.01-0.2 mm, and the diameter of composite fiber core yarn is 0.005-0.08 mm; a wrapping layer of the composite fiber is nickel-phosphorus amorphous alloy and particularly comprises 80-94% of Ni and 6-20% of P, and the composite fiber core yarn is made of polymers. A preparation method comprises the steps that (1) by adopting an alkaline solution, polymer fiberis subjected to oil removal and degreased; (2) a chromic anhydride and sulfuric acid solution is adopted for coarsening the surface of the fiber; (3) an acidic tin salt solution is adopted for fiber sensitization; (4) a silver nitrate and ammonium hydroxide solution is adopted for activating the surface of the fiber; (5) chemical nickel-phosphorus plating is conducted on the fiber; (6) electro-brush plating of nickel-phosphorus amorphous alloy is conducted on the fiber.

Description

technical field [0001] The invention relates to the production field of metal composite fibers, in particular to a nickel-phosphorus amorphous alloy composite fiber and a preparation method thereof. Background technique [0002] The functions of soft magnetic materials are mainly magnetic conduction, conversion and transmission of electromagnetic energy. At present, the application of soft magnetic materials can be roughly divided into four categories: alloy thin strips or sheets; amorphous alloy thin strips; body. Amorphous alloys based on transition metals (iron, cobalt, nickel) have excellent soft magnetic properties, high saturation magnetic induction and low AC loss, and can be widely used in high and low frequency transformers (partially replacing silicon steel sheets and permalloys), Magnetic sensors, recording heads, magnetic shielding materials, etc. With the rapid development of electronic engineering technology, the research and development of advanced soft mag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/36C23C18/24C23C18/28C23C28/02C25D5/06C22C45/02
CPCC22C45/02C23C18/24C23C18/285C23C18/36C23C28/021C25D5/06
Inventor 罗奕兵
Owner 罗奕兵
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