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AZ91D magnesium alloy part coating

A technology for magnesium alloys and parts, which is applied in the field of coating of AZ91D magnesium alloy parts, can solve the problems of no nano-Cr-Ce-La-In composite anti-corrosion coating, and achieve strong economic applicability, good anti-oxidation and corrosion performance, and structural simple effect

Inactive Publication Date: 2016-03-30
FUJIAN CHUANZHENG COMM COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] According to the results of literature search and patent search, there is no nano-Cr-Ce-La-In composite anti-corrosion coating on the surface of AZ91D magnesium alloy parts in China or an anti-corrosion coating with a contact surface area of ​​more than 30% of the anti-corrosion coating and the atomic order of the base material Related patent literature reports that the area distance is not greater than 4nm

Method used

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  • AZ91D magnesium alloy part coating
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Examples

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Embodiment 1

[0014] figure 1 It is a structural schematic diagram of an AZ91D magnesium alloy part coating in Example 1 of the present invention.

[0015] figure 2 It is a 15000 times scanning electron microscope image of the coating of an AZ91D magnesium alloy part in Example 1 of the present invention.

[0016] In the accompanying drawings, 1 is a surface material layer, and 2 is a matrix material.

[0017] The present invention is to use the AZ91D magnesium alloy material to be cast into blanks and mechanical processing methods to make mechanical parts, and to grind, clean, degrease, derust, clean, dry and immediately protect with inert gas on the surface of the parts; The conditions of gas protection, the composition is Ni-Cr-Ce-La-In, and the content of Ni is not less than 80% (wt%), Cr is not less than 10% (wt%), and the content of Ce is 0.5%~ 1.5% (wt%) composite material powder containing 0.4% to 1% (wt%) La and 0.4% to 0.6% (wt%) In The condition of inert gas protection, usin...

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Abstract

The invention discloses an AZ91D magnesium alloy part coating. The AZ91D magnesium alloy part coating is characterized in that a surface material layer is arranged on a part; the main components of the surface material layer are Ni-Cr-Ce-La-In; Ni is not less than 80 wt%; Cr is not less than 10 wt%; Ce ranges from 0.5 wt% to 1.5 wt%; La ranges from 0.4 wt% to 1 wt%; In ranges from 0.4 wt% to 0.6 wt%; the diameter or length of microcrystalline units or fine particles not less than 75% of the surface material layer is 1-1500 nm; the different microcrystalline units or fine particles are tightly combined; the surface material layer of the part and a substrate material are integrated; the distance between the part surface material layer and an atomic orderly area of the substrate material of more than 30% of the contact surface area of the part surface material layer and the substrate material is not larger than 4 nm, and the AZ91D magnesium alloy part coating is formed.

Description

technical field [0001] The invention relates to an AZ91D magnesium alloy part coating. Background technique [0002] AZ91D magnesium alloy is one of the lightest metals among practical metal materials for automobiles. It has high specific strength, specific stiffness, excellent shock absorption and cutting performance, and is suitable for lightweight design materials for parts. The AZ91D magnesium alloy parts treated with the surface anti-oxidation and corrosion process have good anti-corrosion performance and good mechanical properties, and can be used to produce automobiles and other various parts. [0003] According to the results of literature search and patent search, the existing anti-oxidation and corrosion treatments on the surface of AZ91D magnesium alloy parts mainly include: ① chemical nickel plating; ② thermal spraying (thermal spraying aluminum diffusion treatment); ③ anodic oxidation; ④ plasma micro-arc anodic oxidation; Chemical conversion coating; ⑥ depositi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/05
CPCC22C19/058C22C2200/00C22C2204/00
Inventor 陈瑞晶
Owner FUJIAN CHUANZHENG COMM COLLEGE
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