Method for preparing high-hardness Cu base amorphous alloy coating by using laser surface treatment

A technology of amorphous alloy and amorphous layer, applied in metal material coating process, coating and other directions, can solve the problems of slow deposition speed, complex processing procedure, poor repeatability, etc., to achieve simple cooling system, high energy density, processing short time effect

Inactive Publication Date: 2011-04-06
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the physical vapor deposition method can only obtain thin deposited films, and the deposition speed is relatively slow and the efficiency is low; the composition of the amorphous film deposited by electrochemical deposition is not easy to be accurately controlled, and the repeatability is poor. There is a gap between theoretical research and industrial production, and experience depends on strong, and the electrolytic waste liquid has serious environmental pollution and complex treatment procedures

Method used

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  • Method for preparing high-hardness Cu base amorphous alloy coating by using laser surface treatment
  • Method for preparing high-hardness Cu base amorphous alloy coating by using laser surface treatment
  • Method for preparing high-hardness Cu base amorphous alloy coating by using laser surface treatment

Examples

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Effect test

example 1

[0034] Example 1: Preparation of 120 μm thick Cu by laser surface treatment 60 Zr 30 Ti 10 Amorphous Alloy Coating

[0035] The specific operation steps are as follows:

[0036] The first step: Cu 60 Zr 30 Ti 10 Alloy Preparation

[0037] Select Cu, Zr, and Ti elements with a purity of 99.9% as raw materials, and mix them according to atomic percentages. Place the prepared raw materials in a vacuum electric arc furnace, and vacuumize to 5×10 -3Pa, filled with argon protective gas with a pressure of 0.05MPa; adjust the current to 200A, smelt 4 times and take it out with the furnace cooling to obtain uniform Cu 60 Zr 30 Ti 10 alloy.

[0038] Step 2: Sample Preparation

[0039] The prepared alloy was cut into a sample of 15mm×10mm×2mm, and the surface was treated with sandpaper and acetone to increase the laser absorption rate of the material surface.

[0040] Step Three: Laser Treatment

[0041] The sample was placed on the copper mold of the workbench, and the prot...

example 2

[0045] Example 2: Preparation of 185 μm thick Cu by laser surface treatment 60 Zr 30 Ti 10 Amorphous Alloy Coating

[0046] The specific operation steps are as follows:

[0047] The first step: Cu 60 Zr 30 Ti 10 Alloy Preparation

[0048] Select Cu, Zr, and Ti elements with a purity of 99.9% as raw materials, and mix them according to atomic percentages. Place the prepared raw materials in a vacuum electric arc furnace, and vacuumize to 5×10 -3 Pa, fill in the argon protective gas with a pressure of 0.01MPa; adjust the current to 220A, smelt 5 times and take it out with the furnace cooling to obtain uniform Cu 60 Zr 30 Ti 10 alloy.

[0049] Step 2: Sample Preparation

[0050] The prepared alloy was cut into a sample of 15mm×10mm×2mm, and the surface was treated with sandpaper and acetone to increase the laser absorption rate of the material surface.

[0051] Step Three: Laser Treatment

[0052] The sample was placed on the copper mold of the workbench, and the pro...

example 3

[0057] Example 3: Preparation of 135 μm thick Cu by laser surface treatment 50 Zr 10 Ti 40 Amorphous Alloy Coating

[0058] The specific operation steps are as follows:

[0059] The first step: Cu 50 Zr 10 Ti 40 Alloy Preparation

[0060] Select Cu, Zr, and Ti elements with a purity of 99.9% as raw materials, and mix the ingredients according to atomic percentages. Place the prepared raw materials in a vacuum electric arc furnace, and repeatedly smelt them in a high-purity argon atmosphere, and vacuumize to 4×10 -3 Pa, filled with argon protective gas with a pressure of 0.06MPa; adjust the current to 250A, smelt 4 times and take it out with the furnace cooling to obtain uniform Cu 50 Zr 10 Ti 40 alloy.

[0061] Step 2: Sample Preparation

[0062] The prepared alloy was cut into a sample of 15mm×10mm×2mm, and the surface was treated with sandpaper and acetone to increase the laser absorption rate of the material surface.

[0063] Step Three: Laser Treatment

[0064...

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Abstract

The invention discloses a method for making a high-hardness Cu-base amorphous alloy coating by laser surface treatment. The method uses 180W low-power Nd:YAG pulse laser to form on the surface of Cu-base alloy a 120 to 230mu m amorphous layer which has no crackles on the surface, good bonding with the base and the thickness of which can be controllable by adjusting parameters of a laser process. During the whole process, CNC2000 computer numerical controlled software is adopted for operation so as to realize large-area laser scanning and high production efficiency, and an atmosphere protecting and cooling system is convenient and simple and lower in cost.

Description

technical field [0001] The invention relates to a method for preparing an amorphous alloy, more particularly, a method for preparing a high-hardness Cu-Zr-Ti amorphous alloy coating by using a low-power Nd:YAG pulsed laser. Background technique [0002] Amorphous alloy has a new type of alloy composition and atomic composition different from crystalline alloys, and has the characteristics of general metals and glasses, making it exhibit a series of excellent properties in physical, chemical and mechanical properties, such as high Corrosion resistance, wear resistance, good strength and toughness, ideal magnetic properties, etc., is an ideal coating material. [0003] With the continuous development of amorphous alloy preparation methods and theoretical research, amorphous materials have entered the stage of industrial application from the laboratory stage (for example, the General Iron and Steel Research Institute of the Ministry of Metallurgy of my country has been able to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/00C22C1/02C23C26/00
Inventor 张涛韩培培陈冰清逄淑杰
Owner BEIHANG UNIV
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