Microarc oxidation treatment method for high strength casting rare earth magnesium alloy

A technology of micro-arc oxidation and treatment method, which is applied in the direction of anodic oxidation, etc., can solve the problems of high cost and complicated electrical parameter setting, and achieve the effect of high production efficiency, wide application value, and uniform and dense ceramic layer

Inactive Publication Date: 2006-10-11
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The purpose is to solve the problems of SJDM-1’s corrosion resistance, cumbersome electrical parameter setting, and high cost. The present invention provides a process for treating SJDM-1 with a bipolar AC micro-arc oxidation device, that is, generating A layer of ceramic film, so that SJDM-1 achieves the purpose of corrosion resistance

Method used

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  • Microarc oxidation treatment method for high strength casting rare earth magnesium alloy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Preparation of electrolyte solution

[0029]The components of the electrolyte include film-forming agents, auxiliary agents, additives and pH regulators; the film-forming agent sodium silicate needs to be dissolved in distilled water to a clear state, and then poured into the electrolytic cell to make its concentration 6.5g / L; the auxiliary agent , Additives and pH regulators also need to be dissolved in distilled water to a clear state, and then poured into the electrolytic cell so that the concentration of sodium fluoride is 8g / L, the concentration of glycerin is 10mL / L, and the concentration of potassium hydroxide is 8g / L.

[0030] (2) SJDM-1 pretreatment

[0031] Prepare a sodium hydroxide degreaser solution with a concentration of 100g / L. Put the SJDM-1 sample into this solution, keep it warm at 60-70°C for 15-20 minutes, rinse it with clean water, and then rinse it with distilled water; if the surface of the SJDM-1 sample is more oily, it can be hydrogenated ...

Embodiment 2

[0037] (1) Preparation of electrolyte solution

[0038] Electrolyte components include film-forming agent, auxiliary agent, additive and pH regulator; film-forming agent sodium aluminate needs to be dissolved in distilled water to a clear state, and then poured into the electrolytic cell to make the concentration 8g / L; auxiliary agent, Additives and pH regulators also need to be dissolved in distilled water to a clear state, and then poured into the electrolytic cell so that the concentration of sodium fluoride is 4g / L, the concentration of glycerin is 10mL / L, and the concentration of potassium hydroxide is 6g / L.

[0039] (2) SJDM-1 pretreatment

[0040] Prepare a sodium hydroxide degreaser solution with a concentration of 100g / L. Put the SJDM-1 sample into this solution, keep it warm at 60-70°C for 15-20 minutes, rinse it with clean water, and then rinse it with distilled water; if the surface of the SJDM-1 sample is more oily, it can be hydrogenated at 90-100°C Boil in sod...

Embodiment 3

[0046] (1) Preparation of electrolyte solution

[0047] The electrolyte components include film-forming agent, auxiliary agent, additive and pH regulator; film-forming agent sodium phosphate needs to be dissolved in distilled water to a clear state, and then poured into the electrolytic cell to make its concentration 6.5g / L; auxiliary agent, Additives and pH regulators also need to be dissolved in distilled water to a clear state, and then poured into the electrolytic cell so that the concentration of sodium fluoride is 4g / L, the concentration of glycerin is 10mL / L, and the concentration of potassium hydroxide is 4g / L.

[0048] (2) SJDM-1 pretreatment

[0049] Prepare a sodium hydroxide degreaser solution with a concentration of 100g / L. Put the SJDM-1 sample into this solution, keep it warm at 60-70°C for 15-20 minutes, rinse it with clean water, and then rinse it with distilled water; if the surface of the SJDM-1 sample is more oily, it can be hydrogenated at 90-100°C Boil ...

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Abstract

This invention relates to the casting rare earth magnetism alloy micro-arc oxidation dealing method with high intensity. This invention has follows steps: (1) Preparing electrolyte; (2) preprocessing SJDM-1 high -intensity casting rare earth magnetism alloy; (3) micro-arc oxidation; (4) after-processing SJDM-1 high -intensity casting rare earth magnetism alloy. the ceramic film thickness can get to 10-50um,the erosion resistance is well, if the reaction time prolongs for 30-60 min, then the ceramic film thickness can increase to 150, which improves the ceramic surface rigidity up to 500Hv. This invention has broad application value especially in the filed that needs light and good erosion-bearing material.

Description

technical field [0001] The invention belongs to the micro-arc oxidation treatment technology of cast rare earth magnesium alloy, and in particular relates to the SJDM-1 micro-arc oxidation treatment method of high-strength cast rare earth magnesium alloy. Background technique [0002] SJDM-1 high-strength casting rare earth magnesium alloy (hereinafter referred to as SJDM-1), is a new type of rare earth magnesium alloy newly developed in China. It has the characteristics of high temperature resistance and good creep resistance. It is mainly suitable for aviation, aerospace, weapons, Automobiles, electronic products and other fields. The purpose of reducing the weight of the machine body, reducing energy consumption and saving cost can be achieved by applying this alloy. The treatment of rare earth magnesium alloys by micro-arc oxidation is also a new technology developed rapidly in the past two decades. Micro-arc oxidation refers to increasing the processing voltage (great...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/30
Inventor 潘利华常江李珍曲晓春
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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