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Magnesium article coated electrolyte

A technology of electrolyte and products, applied in the direction of circuits, conductive materials, conductive materials, etc., can solve the problem of damaging the appearance of products

Inactive Publication Date: 2010-05-26
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ceramic film formed by the electrolyte used in this method is a magnesium oxide ceramic film, and its color is white. For products that require a black appearance, it needs to be painted again. After the product wears off the paint, the white ceramic film is exposed and damaged. Appearance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Sodium hydroxide 25g / l

[0016] Sodium silicate 1g / l

[0017] Potassium fluoride 10g / l

[0018] Copper pyrophosphate 4g / l

[0019] Nickel nitrate 0.1g / l

[0020] Sodium citrate 8g / l

[0021] Thiourea 1g / l

[0022] Temperature: 35°C;

[0023] Coating film thickness of magnesium products is 10μm, black.

Embodiment 2

[0025] Sodium hydroxide 13g / l

[0026] Sodium silicate 8g / l

[0027] Potassium fluoride 13g / l

[0028] Copper pyrophosphate 1.8g / l

[0029] Nickel nitrate 0.1g / l

[0030] Sodium citrate 5g / l

[0031] Thiourea 0.1g / l

[0032] Temperature: 25°C;

[0033] Magnesium products coated film thickness 14μm, black.

Embodiment 3

[0035] Potassium hydroxide 2g / l

[0036] Sodium silicate 35g / l

[0037] Potassium fluoride 1g / l

[0038] Copper pyrophosphate 6g / l

[0039] Nickel nitrate 0.1g / l

[0040] Disodium EDTA 3g / l

[0041] Hexatropine 0.1g / l

[0042] Temperature: 60°C;

[0043] The coating film thickness of magnesium products is 14μm, and the black is slightly reddish.

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PUM

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Abstract

The invention discloses an electrolyzing liquid of coating of magnesiun product, which comprises the following parts: basic liquid, blackening agent and complex agent, wherein the blackening agent contains 0. 3-9g / l main blackening agent and 0. 1-8g / l subsidiary blackening agent; the content of the complex agent is 0. 5-20g / l.

Description

【Technical field】 [0001] The invention relates to an electrolytic solution for coating a magnesium product. 【technical background】 [0002] Magnesium alloy materials have been widely used in industry because of their small specific gravity, excellent electromagnetic shielding performance, and suitable for mass production of die-casting. However, due to the active chemical properties of magnesium and magnesium alloy materials, magnesium products must be treated with appropriate surface protection to improve the corrosion resistance and wear resistance of the surface of magnesium alloy materials. [0003] Therefore, at present the industry has adopted magnesium alloy micro-arc oxidation technology to coat magnesium alloy materials, such as a kind of coating method for magnesium products disclosed in Chinese Patent Application No. 86108405 and used electrolyte, which adopts alkali metal silicate (such as Potassium silicate), alkali metal hydroxide (such as potassium hydroxide)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/30
CPCH01B1/122
Inventor 罗忠无林军简琳彭铁强
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD