Corrosion-resistant magnesium alloy surface treatment process

A surface treatment and surface pretreatment technology, which is applied in the metal material coating process, superimposed layer plating, coating, etc., can solve the difficulties in PVD treatment of magnesium alloys, the inability to achieve precise control, and the low stable temperature of magnesium alloys, etc. problems, to achieve the effect of avoiding penetrating corrosion, good application value and improving performance

Inactive Publication Date: 2018-01-19
ANHUI HUOSHAN LONGXIN METAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the low stable temperature of magnesium alloys, it brings difficulties to the PVD treatment of magnesium alloys. More importantly, the high and unstable vapor pressure of magnesium alloys in vacuum makes it impossible to accurately control the composition of the coating, and PVD The characteristics of preparation equipment and process determine that it is difficult to carry out surface coating on complex-shaped surfaces and large-sized workpiece surfaces

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A corrosion-resistant magnesium alloy surface treatment process in a preferred embodiment of the present invention comprises the following steps:

[0029] (1) Surface pretreatment: Grinding and polishing the surface of the magnesium alloy, then degreasing treatment, and then sandblasting the surface of the magnesium alloy;

[0030] (2) Preparation of anti-oxidation layer: coating anti-oxidation layer on the surface of magnesium alloy after surface pretreatment;

[0031] (3) Preparation of the anti-corrosion layer: spraying and coating the anti-corrosion layer on the surface of the magnesium alloy prepared in step (2);

[0032] (4) Surface post-treatment: The magnesium alloy obtained in step (3) was sealed by laser remelting, and then baked in an oven at 210°C for 5 hours to obtain a corrosion-resistant magnesium alloy material.

[0033] Wherein, the method of degreasing treatment in the step (1) is to firstly use ethanol to clean the surface of the magnesium alloy mate...

Embodiment 2

[0044] A corrosion-resistant magnesium alloy surface treatment process in a preferred embodiment of the present invention comprises the following steps:

[0045] (1) Surface pretreatment: Grinding and polishing the surface of the magnesium alloy, then degreasing treatment, and then sandblasting the surface of the magnesium alloy;

[0046] (2) Preparation of anti-oxidation layer: coating anti-oxidation layer on the surface of magnesium alloy after surface pretreatment;

[0047] (3) Preparation of the anti-corrosion layer: spraying and coating the anti-corrosion layer on the surface of the magnesium alloy prepared in step (2);

[0048] (4) Surface post-treatment: The magnesium alloy obtained in step (3) was sealed by laser remelting, and then baked in an oven at 200°C for 6 hours to obtain a corrosion-resistant magnesium alloy material.

[0049] Wherein, the method of degreasing treatment in the step (1) is to firstly use ethanol to clean the surface of the magnesium alloy mate...

Embodiment 3

[0060] A corrosion-resistant magnesium alloy surface treatment process in a preferred embodiment of the present invention comprises the following steps:

[0061] (1) Surface pretreatment: Grinding and polishing the surface of the magnesium alloy, then degreasing treatment, and then sandblasting the surface of the magnesium alloy;

[0062] (2) Preparation of anti-oxidation layer: coating anti-oxidation layer on the surface of magnesium alloy after surface pretreatment;

[0063] (3) Preparation of the anti-corrosion layer: spraying and coating the anti-corrosion layer on the surface of the magnesium alloy prepared in step (2);

[0064] (4) Surface post-treatment: The magnesium alloy obtained in step (3) was sealed by laser remelting, and then baked in an oven at 220°C for 5 hours to obtain a corrosion-resistant magnesium alloy material.

[0065] Wherein, the method of degreasing treatment in the step (1) is to firstly use ethanol to clean the surface of the magnesium alloy mate...

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Abstract

The invention discloses a corrosion-resistant magnesium alloy surface treatment process, and belongs to the technical field of nonferrous metal processing. The corrosion-resistant magnesium alloy surface treatment process includes the following steps of (1) conducting surface pretreatment, (2) preparing an anti-oxidation layer, (3) preparing a corrosion-resistant layer and (4) performing surface aftertreatment. The corrosion-resistant magnesium alloy surface treatment process disclosed by the invention has the characteristics of being low in treatment difficulty, mild in process condition andconvenient to operate; and moreover, treated magnesium alloy has good corrosion resistance and certain strength, conditions are provided for application and popularization of the magnesium alloy, andthe application value is good.

Description

technical field [0001] The invention relates to the technical field of nonferrous metal processing, in particular to a corrosion-resistant magnesium alloy surface treatment process. Background technique [0002] Magnesium alloys are widely used in aerospace, transportation, electronic equipment, communication equipment, military, etc. Supplies, machinery and equipment and other fields. Due to the poor corrosion resistance of magnesium alloys in acidic and neutral environments; low strength and hardness at room temperature, and poor wear resistance, this has become a key problem restricting its development and application. Surface modification of magnesium alloy is an effective way to improve its properties. At present, almost all surface treatment methods have been tried on magnesium alloys. The production cost of electrochemical plating is low and the operation is simple, but it is more harmful to the environment, the cost of waste disposal is high, and the bonding force...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/00C23C24/10C23C4/04
Inventor 华玲玲
Owner ANHUI HUOSHAN LONGXIN METAL TECH CO LTD
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