Magnesium workpiece surface spraying fluid and application thereof

A technology of workpiece surface and spraying liquid, which is applied in the direction of metal material coating process, etc., to achieve the effect of environmental protection of components, good durability and simple preparation process

Active Publication Date: 2020-02-04
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For the difficulties and problems existing in the prior art, the purpose of the present invention is to provide a kind of magnesium workpiece surface spraying liquid, and based on this spraying liquid is applied to the method for preparing the durable super-amphiphobic surface of magnesium workpiece

Method used

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  • Magnesium workpiece surface spraying fluid and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The preparation of surface spraying liquid of pure magnesium workpiece (diameter 20mm, thick 5.0mm disc), concrete steps are as follows:

[0026] ① Take 500ml of concentrated phosphoric acid and dilute to 1L, then ultrasonically disperse 150g of aluminum hydroxide in it, and stir at 85°C for 4 hours to obtain solution A;

[0027] ② Add 10ml of nonanoic acid and 90ml of nonanol to 900ml of absolute ethanol, stir at room temperature for 2 hours to obtain solution B;

[0028] ③Take 400ml of solution A and 600ml of solution B, mix them, and stir at room temperature for 0.5 hours to obtain the surface spraying solution for magnesium workpieces.

[0029] Apply the above-mentioned spraying solution to prepare the durable super-amphiphobic surface of pure magnesium workpiece, the specific steps are as follows:

[0030] ① Spraying treatment: Spray the above-mentioned spraying liquid evenly on the surface of the clean pure magnesium workpiece, the ratio of the volume of the spra...

Embodiment 2

[0045] The preparation of surface spraying liquid on AZ31 magnesium alloy workpiece (1.0m×0.5m×3.0mm rectangular plate), the specific steps are as follows:

[0046] ① Take 750ml of concentrated phosphoric acid and dilute to 1L, then ultrasonically disperse 250g of aluminum hydroxide in it, and stir at 100°C for 5 hours to obtain solution A;

[0047] ② Add 30ml of nonanoic acid and 70ml of nonanol to 900ml of absolute ethanol, stir at room temperature for 1 hour to obtain solution B;

[0048] ③Take 400ml of solution A and 600ml of solution B, mix them, and stir at room temperature for 1.5 hours to obtain the surface spraying solution for magnesium workpieces.

[0049] Apply the above spraying solution to prepare the durable superamphiphobic surface of AZ31 magnesium alloy workpiece, the specific steps are as follows:

[0050] ① Spraying treatment: Spray the above-mentioned spraying liquid evenly on the surface of the clean AZ31 magnesium alloy workpiece. The ratio of the volum...

Embodiment 3

[0054] The preparation of surface spraying liquid of AZ61 magnesium alloy workpiece (square plate of 20cm * 20cm * 4.0mm), concrete steps are as follows:

[0055] ① Take 600ml of concentrated phosphoric acid and dilute to 1L, then ultrasonically disperse 200g of aluminum hydroxide in it, and stir at 90°C for 3 hours to obtain solution A;

[0056] ② Add 20ml of nonanoic acid and 80ml of nonanol to 900ml of absolute ethanol, stir at room temperature for 1.5 hours to obtain solution B;

[0057] ③Take 400ml of solution A and 600ml of solution B, mix them, and stir at room temperature for 1.0 hour to obtain the surface spraying solution for magnesium workpieces.

[0058] Apply the above spraying solution to prepare the durable superamphiphobic surface of AZ61 magnesium alloy workpiece, the specific steps are as follows:

[0059] ① Spraying treatment: Spray the above-mentioned spraying liquid evenly on the surface of the clean AZ61 magnesium alloy workpiece. The ratio of the volume...

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Abstract

The invention provides a magnesium workpiece surface spraying fluid, and a method for using the spraying fluid for preparing a durable super-amphiphobic surface of a magnesium workpiece. The magnesiumworkpiece surface spraying fluid provided by the invention does not contain fluorine, silicon, rubber, resin and various micrometer/nanometer fillers, so that the components are environmental-friendly without causing a compatibility problem. The spraying fluid is uniformly sprayed to a clean magnesium workpiece surface, so that the durable super-amphiphobic surface of the magnesium workpiece canbe further obtained through appropriate solidification treatment. The super-amphiphobic surface of the magnesium workpiece prepared through the invention is good in durability, and can withstand multiple harsh tests such as frictional wear, frictional wear radiation, high-pressure water column impact, strong acid and strong base, organic solvent immersion and strong corrosion medium immersion, sothat the application field of a magnesium material is hopefully expanded greatly. The method provided by the invention is applicable to the treatment of magnesium and alloy workpieces thereof with various sizes and shapes. The method provided by the invention has the characteristics of simple process, convenience in operation, green environment protection, easiness in large-scale industrial treatment and the like.

Description

technical field [0001] The invention belongs to the technical field of surface engineering, and in particular relates to a surface spraying liquid for magnesium workpieces and a method for preparing durable superamphiphobic surfaces of magnesium workpieces. Background technique [0002] Magnesium material has the advantages of high specific strength, specific stiffness, damping, machinability, thermal conductivity, strong electromagnetic shielding ability, etc., and is known as "the most promising green engineering material in the 21st century". with broadly application foreground. However, its chemical properties are very active, and the natural oxide film on its surface is loose and porous, and basically has no protective effect. Therefore, it is necessary to improve the durability of the magnesium alloy surface through appropriate surface treatment to promote its wide application. [0003] Due to its special wettability of both superhydrophobic and superoleophobic, compa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/20C23C22/76
CPCC23C22/20C23C22/76
Inventor 李凌杰雷惊雷李霞尹伟何建新潘复生
Owner CHONGQING UNIV
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