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A kind of method of iron-based amorphous modified magnesium alloy surface

An iron-based amorphous alloy, iron-based amorphous technology, applied in the field of iron-based amorphous modified magnesium alloy surface, can solve the problems of insufficient performance, complex process, difficult surface treatment of magnesium alloy, etc., and achieve the effect of suppressing grains Effects of growing up, bonding well, and reducing risk of reunion

Active Publication Date: 2022-07-01
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to the existing magnesium alloy surface treatment difficulty, complex process and insufficient performance, the present invention adopts the following technical solutions:

Method used

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  • A kind of method of iron-based amorphous modified magnesium alloy surface
  • A kind of method of iron-based amorphous modified magnesium alloy surface

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A method for iron-based amorphous modified magnesium alloy surface is provided, wherein the magnesium alloy is selected from the AZ91 brand, and specifically includes the following steps:

[0031] S1. Weigh the raw materials for casting AZ91 magnesium alloy and FeCrMoBC amorphous particles according to the mass percentages of 95.00% and 5.00%;

[0032] S2. Before smelting, place the FeCrMoBC amorphous particles in a holding furnace with a temperature of 300 °C to preheat and keep warm;

[0033] S3. The components with the melting point higher than 650°C in the raw material for casting the AZ91 magnesium alloy in step S1 are placed in the crucible, then the crucible is placed in the heating furnace, the temperature is raised to 700°C, and CO is introduced 2 and SF 6 Smelting is carried out as a protective gas. After the smelting is completed, the components with a melting point lower than 650°C in the raw material and the FeCrMoBC amorphous particles in step S2 are adde...

Embodiment 2

[0036] Provided is a method for iron-based amorphous modified magnesium alloy surface, wherein the magnesium alloy is selected from AM50 brand, and specifically includes the following steps:

[0037]S1. Weigh the raw materials for casting AM50 magnesium alloy and FeCrMoBC amorphous particles according to the mass percentages of 94.00% and 6.00%;

[0038] S2. Before smelting, place the FeCrMoBC amorphous particles in a holding furnace with a temperature of 200 °C to preheat and keep warm;

[0039] S3. The components whose melting point is higher than 650°C in the raw material for casting AM50 magnesium alloy in step S1 are placed in the crucible, then the crucible is placed in the heating furnace, the temperature is raised to 720°C, and CO is introduced 2 and SF 6 Smelting is carried out as a protective gas, and after the smelting is completed, the components whose melting point is lower than 650°C in the raw material and the FeCrMoBC amorphous particles in step S2 are added t...

Embodiment 3

[0042] Provides a method for iron-based amorphous modified magnesium alloy surface, wherein the magnesium alloy selects AM60 brand, and specifically includes the following steps:

[0043] S1. Weigh the raw materials for casting AM60 magnesium alloy and FeCrMoBC amorphous particles according to the mass percentages of 93.00% and 7.00%;

[0044] S2. Before smelting, place the FeCrMoBC amorphous particles in a holding furnace with a temperature of 250 °C to preheat and keep warm;

[0045] S3. The components whose melting point is higher than 650°C in the raw material for casting AM60 magnesium alloy in step S1 are placed in the crucible, then the crucible is placed in the heating furnace, the temperature is raised to 730°C, and CO is introduced 2 and SF 6 Smelting is carried out as a protective gas, and after the smelting is completed, the components whose melting point is lower than 650°C in the raw material and the FeCrMoBC amorphous particles in step S2 are added to the cruci...

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Abstract

A method for modifying the surface of an iron-based amorphous magnesium alloy relates to the technical field of surface modification, and the specific steps are as follows: S1. Component A and component B are weighed according to mass percentage; Raw material, its mass percentage is 92-95%; component B is iron-based amorphous alloy particles, and its mass percentage is 5-8%; S2, the iron-based amorphous alloy particles are placed in a holding furnace to preheat and keep warm; S3, place the component whose melting point is higher than 650 ℃ in the raw material of component A in step S1 in the crucible, then put the crucible into the heating furnace, heat up to 700 ℃~740 ℃ and pass into the protective gas for smelting, smelting After completion, add the components whose melting point is lower than 650 ℃ in the raw materials of component A and the iron-based amorphous alloy particles in step S2 into the crucible, heat up to 760 ℃ and keep the temperature for 20-30 min; S4, wait for the temperature to cool to T 0 When the temperature is reached, mechanical stirring is carried out for 5 to 10 minutes to T 50 After the temperature, it was left to stand for another 20 minutes, and then cooled to obtain a magnesium alloy surface composite material reinforced by iron-based amorphous alloy particles.

Description

technical field [0001] The invention relates to the technical field of surface modification, in particular to a method for modifying the surface of an iron-based amorphous magnesium alloy. Background technique [0002] Surface modification technology is an effective means to significantly improve the performance of mechanical parts and expand their fields of use. It is mainly used to improve the mechanical, physical and chemical properties of the surface of parts such as wear resistance, corrosion resistance and heat resistance. At present, surface modification technology mainly uses chemical and physical methods to change or improve the chemical composition or organizational structure of the surface layer of parts. Mainly include chemical heat treatment (carburizing, nitriding, metalizing, etc.), surface coating (plasma spraying, arc spraying), laser remelting composite and other thin-film coatings (physical vapor deposition, chemical vapor deposition, etc.) and non-metall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C23/00C22C45/02
CPCC22C1/03C22C23/00C22C45/02
Inventor 谭军彭家兴陈一鸣周航高佳嵘李建波陈先华潘复生
Owner CHONGQING UNIV