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Aluminum alloy surface high-corrosion-resistant wear-resistant iron-based amorphous coating and preparation method thereof

An aluminum alloy surface, iron-based amorphous technology, applied in metal material coating process, coating, fusion spraying, etc., can solve the problems of low surface hardness, easy corrosion and wear, corrosion and wear of aluminum alloy, etc., to achieve enhanced Effects of durability, enhanced bonding strength, and excellent wear resistance

Inactive Publication Date: 2020-05-01
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the problems that the surface of aluminum alloy and aluminum-based composite materials is easy to corrode, easy to wear, and low surface hardness, etc., and provides an iron-based amorphous coating with excellent corrosion resistance and wear resistance and high bonding strength and a preparation method thereof to solve the problems Corrosion and wear problems faced by aluminum alloys in industrial applications

Method used

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  • Aluminum alloy surface high-corrosion-resistant wear-resistant iron-based amorphous coating and preparation method thereof
  • Aluminum alloy surface high-corrosion-resistant wear-resistant iron-based amorphous coating and preparation method thereof
  • Aluminum alloy surface high-corrosion-resistant wear-resistant iron-based amorphous coating and preparation method thereof

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Embodiment 1

[0033] (1) Select 8090 Al-Li alloy as the matrix material, and pretreat the Al-Li alloy matrix. First, use 800# sandpaper to polish the substrate, and then place it in ethanol for ultrasonic cleaning. After ultrasonic cleaning for 4 minutes, place it at room temperature to dry naturally;

[0034] (2) 30 minutes before spraying, perform sandblasting on the pretreated aluminum alloy substrate. The abrasive used for sandblasting is 20# white corundum sand, the pressure of sandblasting is 0.6MPa, the speed is 0.6cm / s, and the time is 6min

[0035] (3) Dry the iron-based amorphous powder in the particle size range of 30-50 μm and the Ni60 powder in the particle size range of 38-75 μm under vacuum conditions at 100° C. for 1 hour;

[0036] (4) the aluminum alloy substrate that step (2) is obtained is fixed; With described step (4) gained dry Ni60 powder and iron-based amorphous alloy powder as the material to be sprayed, the material to be sprayed is loaded into the supersonic flam...

Embodiment 2

[0040] (1) Select 8090 aluminum-lithium alloy as the base material, and pretreat the aluminum alloy base. First, use 800# sandpaper to polish the substrate, and then place it in ethanol for ultrasonic cleaning. After ultrasonic cleaning for 4 minutes, place it at room temperature to dry naturally;

[0041] (2) 30 minutes before spraying, perform sandblasting on the pretreated aluminum alloy substrate. The abrasive used for sandblasting is 20# white corundum sand, the pressure of sandblasting is 0.6MPa, the speed is 0.6cm / s, and the time is 6min

[0042] (3) Dry the iron-based amorphous powder in the particle size range of 30-50 μm and the Ni60 powder in the particle size range of 38-75 μm under vacuum conditions at 100° C. for 1 hour;

[0043] (4) the aluminum alloy substrate that step (2) is obtained is fixed; With described step (4) gained dry Ni60 powder and iron-based amorphous alloy powder as the material to be sprayed, the material to be sprayed is loaded into the super...

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Abstract

The invention discloses an aluminum alloy surface high-corrosion-resistant wear-resistant iron-based amorphous coating and a preparation method thereof. Aluminum alloy serves as a matrix, and the high-corrosion-resistant wear-resistant iron-based amorphous coating is prepared on the surface of the matrix, so that the material has good corrosion resistance and wear resistance under certain conditions, and the coating and the matrix have good bonding strength. The preparation process comprises the following steps that (1) the aluminum alloy matrix is pretreated; (2) sand blasting treatment is carried out on the surface of the pretreated aluminum alloy matrix; and (3) supersonic flame spraying is carried out on the surface of the aluminum alloy matrix obtained after sand blasting treatment toprepare the iron-based amorphous coating. Compared with existing surface treatment technologies such as electrostatic spraying, electroless plating, anodic oxidation and vapor deposition, the prepared hot-spraying iron-based amorphous coating has high corrosion resistance and wear resistance under certain conditions. The coating and the aluminum alloy matrix can form good interface bonding, the bonding strength of the coating and the matrix is enhanced, and the coating is prevented from falling off, so that the coating has excellent durability, and the surface of aluminum alloy can be effectively protected.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to an iron-based amorphous coating with high corrosion resistance and wear resistance on the surface of an aluminum alloy and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of the economy, the demand for materials and energy has increased sharply, which has put a huge pressure on the environment. In order to maintain the sustainable development of the environment, people have begun to try to reduce the waste of resources and improve the utilization rate. At present, some measures have been adopted in some enterprises and industrial production to reduce environmental pollution. For example, in the transportation industry, automobiles emit 19% of the global total of greenhouse gases every year, so improving fuel utilization will effectively reduce greenhouse gases. Emissions, link environmental pressure. Among t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/129C23C4/06
CPCC23C4/06C23C4/129
Inventor 李宏祥杨瑞王善林王健谢璐王文瑞张济山庄林忠
Owner UNIV OF SCI & TECH BEIJING
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