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High-strength corrosion-resistant aluminum alloy profile and preparation method thereof

A corrosion-resistant aluminum alloy and high-strength technology, applied in the field of aluminum alloys, can solve the problems of easy corrosion and reduce the service life of aluminum alloy materials, and achieve the effects of improving fatigue resistance, reducing deformation resistance, and improving strength and toughness.

Active Publication Date: 2017-02-15
安徽省煜灿新型材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the surface of the aluminum alloy is exposed to the atmosphere, it will be covered with a thin layer of natural oxide film, but because the natural oxide film on the surface is easily corroded, the service life of the aluminum alloy material will be greatly reduced.
Therefore, the surface treatment of aluminum alloy profiles is usually carried out. The existing surface treatment processes of aluminum alloy profiles include anodic oxidation, electrolytic coloring, electrophoretic painting, powder spraying, fluorocarbon paint spraying, wire drawing, etc. These surface treatment processes all play a role. A certain corrosion resistance effect, but with the improvement of people's performance requirements for aluminum alloy profiles, the existing aluminum alloy profiles still need to be improved in terms of corrosion resistance and strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A high-strength corrosion-resistant aluminum alloy profile proposed by the present invention includes an aluminum alloy substrate and a ceramic coating, and the aluminum alloy substrate includes the following components by mass fraction: Cu: 0.35%, Si: 0.21%, Fe: 0.3% , Cr: 0.7%, Mg: 0.65%, Mn: 0.5%, Zn: 0.2%, Ti: 0.35%, Li: 0.1%, Ni: 0.4%, Zr: 0.06%, Y: 0.15%, W: 0.04% , V: 0.12%, and the rest is Al.

[0022] Wherein, the raw material of described ceramic coating is nano-ceramic powder, and its raw material comprises by weight: 20 parts of SiC, 20 parts of Cr 2 o 3 , 15 parts of NiO, 20 parts of Cr 3 C 2 , 20 Al 2 o 3, 12 Si 3 N 4 ;

[0023] The present invention also proposes a method for preparing a high-strength corrosion-resistant aluminum alloy profile, which is prepared according to the following process:

[0024] S1. Melting raw materials to obtain aluminum alloy ingots, and obtaining primary aluminum alloy ingots after homogenization treatment;

[002...

Embodiment 2

[0028] A high-strength corrosion-resistant aluminum alloy profile proposed by the present invention includes an aluminum alloy substrate and a ceramic coating, and the aluminum alloy substrate includes the following components by mass fraction: Cu: 0.65%, Si: 0.16%, Fe: 0.5% , Cr: 0.4%, Mg: 1%, Mn: 0.2%, Zn: 0.7%, Ti: 0.1%, Li: 0.2%, Ni: 0.15%, Zr: 0.18%, Y: 0.04%, W: 0.09% , V: 0.06%, and the rest is Al.

[0029] Wherein, the raw material of described ceramic coating is nano-ceramic powder, and its raw material comprises by weight: 30 parts of SiC, 10 parts of Cr 2 o 3 , 25 parts of NiO, 12 parts of Cr 3 C 2 , 30 parts Al 2 o 3 , 5 Si 3 N 4 ;

[0030] The present invention also proposes a method for preparing a high-strength corrosion-resistant aluminum alloy profile, which is prepared according to the following process:

[0031] S1. Melting raw materials to obtain aluminum alloy ingots, and obtaining primary aluminum alloy ingots after homogenization treatment;

[...

Embodiment 3

[0035] A high-strength corrosion-resistant aluminum alloy profile proposed by the present invention includes an aluminum alloy substrate and a ceramic coating, and the aluminum alloy substrate includes the following components by mass fraction: Cu: 0.53%, Si: 0.18%, Fe: 0.41% , Cr: 0.55%, Mg: 0.82%, Mn: 0.33%, Zn: 0.45%, Ti: 0.22%, Li: 0.15%, Ni: 0.28%, Zr: 0.12%, Y: 0.11%, W: 0.065% , V: 0.095%, and the rest is Al.

[0036] Wherein, the raw material of described ceramic coating is nano-ceramic powder, and its particle size is 70nm, and the raw material of nano-ceramic powder comprises by weight: 25 parts of SiC, 15 parts of Cr 2 o 3 , 20 parts of NiO, 16 parts of Cr 3 C 2 , 25 Al 2 o 3 , 8 Si 3 N 4 ;

[0037] The present invention also proposes a method for preparing a high-strength corrosion-resistant aluminum alloy profile, which is prepared according to the following process:

[0038] S1. After smelting the raw materials to obtain an aluminum alloy ingot, the alum...

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Abstract

The invention discloses a high-strength corrosion-resistant aluminum alloy profile and a preparation method thereof. The aluminum alloy profile comprises an aluminum alloy base body and a ceramic coating. The aluminum alloy base body is prepared from Cu, Si, Fe, Cr, Mg, Mn, Zn, Ti, Li, Ni, Zr, Y, W, V and the balance Al. The ceramic coating is prepared from SiC, Cr2O3, NiO, Cr3C2, Al2O3 and Si3N4. According to the high-strength corrosion-resistant aluminum alloy profile, ceramic powder is arranged on the surface of the aluminum alloy base body through plasma cladding, and then laser remelting is conducted, so that the obtained aluminum alloy profile has good mechanical performance such as strength, hardness and impact toughness; and meanwhile, the high-strength corrosion-resistant aluminum alloy profile has the beneficial effects of being resistant to corrosion, good in abrasion resistance, long in service life and the like.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a high-strength corrosion-resistant aluminum alloy profile and a preparation method thereof. Background technique [0002] Because aluminum alloy has many excellent physical and chemical properties, it is widely used in various fields of national economy. When the surface of the aluminum alloy is exposed to the atmosphere, it will be covered with a thin layer of natural oxide film, but because the natural oxide film on the surface is easily corroded, the service life of the aluminum alloy material is greatly reduced. Therefore, the surface treatment of aluminum alloy profiles is usually carried out. The existing surface treatment processes of aluminum alloy profiles include anodic oxidation, electrolytic coloring, electrophoretic painting, powder spraying, fluorocarbon paint spraying, wire drawing, etc. These surface treatment processes all play a role. Certain corrosion...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C21/08C22C21/10C22F1/053C22F1/047C22F1/04C23C4/134C23C4/10C23C4/18
CPCC22C21/00C22C21/08C22C21/10C22F1/04C22F1/047C22F1/053C23C4/10C23C4/18
Inventor 付建华
Owner 安徽省煜灿新型材料科技有限公司
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