Preparation method of metal matrix amorphous coating

A metal matrix, amorphous coating technology, applied in metal material coating process, coating, liquid chemical plating and other directions, can solve the problems of low density, low amorphous content, poor comprehensive anti-corrosion and wear-resistant performance, etc.

Active Publication Date: 2021-05-18
NANCHANG UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to propose a method for preparing an amorphous coating on a metal substrate to solve the problems of low bonding strength, low compactness, low amorphous content, and corrosion resistance in the method for preparing an amorphous alloy coating on the surface of a metal substrate in the prior art. The problem of poor comprehensive wear resistance

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  • Preparation method of metal matrix amorphous coating
  • Preparation method of metal matrix amorphous coating
  • Preparation method of metal matrix amorphous coating

Examples

Experimental program
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Embodiment 1

[0037] Such as Figure 1 to Figure 5 As shown, the embodiment of the present invention provides a method for preparing an amorphous coating on a metal substrate, including steps S101 to S103:

[0038] S101: Electroless plating is performed on the amorphous powder, and a metal layer is formed on the surface of the amorphous powder after electroless plating to prepare an amorphous metal composite powder, and the conductivity range of the metal layer is 9.93*10 6 ~6.3*10 7 s / m.

[0039] Wherein, the amorphous powder can be amorphous powder of different series and models, the shape is not limited, and the particle size is 10-100 μm.

[0040] The metal layer can be iron, cobalt, chromium, etc., and the corresponding resistivity of the metal layer is 1.65*10 -8 ~9.78*10 -8 (Ω·m), which is a high conductivity material.

[0041] The amorphous powder is subjected to electroless plating so that a metal layer is formed on the surface of the amorphous powder to obtain an amorphous me...

Embodiment 2

[0066] Prepare Fe-based amorphous powder on the surface of 304 stainless steel. The composition of the obtained amorphous powder is Fe-Co-Cr-Mo-C-B-Y, the particle size is about 50 μm, and it is spherical powder. The plating solution is copper sulfate solution.

[0067] First, put 300-400 mesh Fe-based amorphous powder into NaOH solution to degrease and then fish out, then pour the prepared sensitizing solution into the Fe-based amorphous powder after degreasing treatment, stir thoroughly for 30 minutes, and wait for the powder After complete settling, filter and dry to obtain sensitized Fe-based amorphous powder.

[0068] Pour the prepared activation solution into the sensitized Fe-based amorphous powder, stir thoroughly for 10 minutes, filter after the powder has completely settled, and wash with distilled water for 3 times after filtration to obtain the activated Fe-based amorphous powder. Choose 2g / L AgNO3 solution.

[0069] Pour the activated Fe-based amorphous powder in...

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Abstract

The invention provides a preparation method of a metal matrix amorphous coating, which comprises the following steps: carrying out chemical plating on amorphous powder to generate a metal layer on the surface of the amorphous powder to prepare amorphous metal composite powder, wherein the conductivity range of the metal layer is 9.93 * 10 < 6 >-6.3 * 10 < 7 > s / m; uniformly laying the amorphous metal composite powder on the surface of a metal matrix, then laying a layer of metal foil on the surface of an amorphous metal composite powder layer to generate a workpiece to be welded; and performing resistance cladding on the workpiece to be welded, so that the amorphous metal composite powder layer is welded to the surface of the metal matrix. Compared with a traditional amorphous coating preparation method, the amorphous coating prepared through the method is low in crystallization rate, high in amorphous content, small in heat influence on a matrix, high in bonding strength of amorphous powder and the metal matrix, few in coating defects and good in compactness; and the preparation method is simple and easy to implement, low in material consumption, lower in cost and convenient to apply and popularize in related industrial fields.

Description

technical field [0001] The invention relates to the field of preparation of an amorphous coating, in particular to a method for preparing an amorphous coating of a metal base. Background technique [0002] Amorphous alloys have the characteristics of high strength, high hardness, good toughness, wear resistance and corrosion resistance. At the same time, it also has good high magnetic permeability, good magnetic properties and other excellent material properties, so it has received extensive attention. Since it is difficult to prepare bulk amorphous coatings, the application of amorphous alloys is generally expanded by preparing amorphous coatings on the surface of metal substrates. [0003] At present, the main methods of preparing amorphous alloy coatings on the surface of metal substrates are laser cladding and thermal spraying, but there are more or less disadvantages in both. The coating prepared by thermal spraying has the disadvantages of low bonding strength with t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C23C18/31
CPCC23C24/103C23C18/31
Inventor 范晓飞王文琴王德陈杰潘昌桂陈雅微张诗奇肖晟
Owner NANCHANG UNIV
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