CN105274515A - Preparation method of aluminum alloy with indium anti-corrosion film - Google Patents
Preparation method of aluminum alloy with indium anti-corrosion film Download PDFInfo
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- CN105274515A CN105274515A CN201510660296.4A CN201510660296A CN105274515A CN 105274515 A CN105274515 A CN 105274515A CN 201510660296 A CN201510660296 A CN 201510660296A CN 105274515 A CN105274515 A CN 105274515A
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Abstract
The invention relates to a preparation method of aluminum alloy with an anti-corrosion indium film. The preparation method includes the following steps that firstly, surface pretreatment is conducted on the aluminum alloy; secondly, pretreated aluminum alloy is soaked into indium hydroxide conversion liquid in which organic silicon is dissolved, a film forming reaction is generated on the surface of the aluminum alloy, and the anti-corrosion film is formed; the indium hydroxide conversion liquid in which the organic silicon is dissolved is composed of 25 g/L-30 g/L of indium hydroxide, 12 g/L of hydrogen peroxide, 6g/L of vinyltrimethoxysilane, 3 g/L of propylene glycol butyl ether and 2 g/L of sodium hydride, and the pH is equal to 1.8; thirdly, the aluminum alloy obtained after film forming is conducted is taken out, washed with deionized water and dried. The preparation method of the aluminum alloy with the anti-corrosion indium film has the beneficial effects of being simple in step, free of a complex machining device, low in cost, capable of guaranteeing that the even and stable anti-corrosion indium film is formed on the surface of the aluminum alloy by setting appropriate parameter conditions and capable of improving the anti-corrosion performance of the aluminum alloy remarkably.
Description
Technical field
The present invention relates to new material technology field, particularly relate to a kind of preparation method with the aluminium alloy of indium corrosion-resisting film.
Background technology
Aluminium alloy is a most widely used class non-ferrous metal structured material in industry, widely applies in Aeronautics and Astronautics, automobile, machinofacture, boats and ships and chemical industry.The develop rapidly of industrial economy, increasing to the demand of Welded structural part, make the Research on Weldability of aluminium alloy also thereupon deeply.
At present, aluminium alloy carries out means of defence, usually adopts chromic salt to form corrosion-resisting film in aluminum alloy surface.But sexavalent chrome is carcinogenic substance, along with the reinforcement of environmental consciousness, national governments and enterprise limit the use of this kind of material just gradually.
Summary of the invention
In view of the problem existing for prior art, the invention provides a kind of preparation method with the aluminium alloy of indium corrosion-resisting film, by forming indium corrosion-resisting film on the surface of aluminium alloy, significantly improving the corrosion resistance nature of aluminium alloy.
The technical scheme that the present invention solves the problems of the technologies described above is as follows:
There is a preparation method for the aluminium alloy of indium corrosion-resisting film, comprise the following steps:
1) aluminium alloy is carried out surface preparation;
2) immersion of pretreated aluminium alloy is dissolved with in organosilyl indium hydroxide conversion fluid, at aluminum alloy surface generation film formation reaction, forms corrosion-resisting film; Described to be dissolved with organosilyl indium hydroxide conversion fluid composed of the following components: indium hydroxide 25-30g/L, hydrogen peroxide 12g/L, vinyltrimethoxy silane 6g/L, propandiol butyl ether 3g/L, sodium hydride 2g/L, pH=1.8;
3) aluminium alloy after film forming is taken out, and by washed with de-ionized water, dry.
The invention has the beneficial effects as follows: the preparation method with the aluminium alloy of indium corrosion-resisting film of the present invention, step simply, does not need complicated processing units, cost lower, by being provided with suitable Parameter Conditions, ensure that and form even, stable indium corrosion-resisting film on the surface of aluminium alloy, the corrosion resistance nature of aluminium alloy can be significantly improved.
Technical solutions according to the invention can also be improved as follows.
Further, step 1) in aluminium alloy carried out surface preparation method comprise the following steps: by aluminum alloy surface polishing to light; With deionized water rinsing; Under 40 DEG C of conditions, be placed in acetone and soak 20 minutes; Take out rear deionized water rinsing; Soak 20 minutes in the sodium hydroxide solution of the 5g/L of 40 DEG C, after taking out, use deionized water rinsing three times.
Take the beneficial effect of above-mentioned further technical scheme to be: to ensure that aluminium alloy carries out surface processed clean, be easy to film forming and prevent the indium corrosion-resisting film that formed uneven.
Further, step 2) in, the temperature of film formation reaction is 40 DEG C, and the time is 1.5 hours.
The beneficial effect of above-mentioned further technical scheme is taked to be: strictly to control temperature of reaction and reaction times; If the time is too short, film-formation result is bad, and the surface of aluminium alloy can not all be covered by indium corrosion-resisting film; Overlong time, film forming is blocked up, is unfavorable for other performances of aluminium alloy, and cost of idleness.
Embodiment
Be described principle of the present invention and feature below, example, only for explaining the present invention, is not intended to limit scope of the present invention.
In embodiment 1-3, be dissolved with organosilyl indium hydroxide conversion fluid composed of the following components: indium hydroxide 25-30g/L, hydrogen peroxide 12g/L, vinyltrimethoxy silane 6g/L, propandiol butyl ether 3g/L, sodium hydride 2g/L, pH=1.8.
Embodiment 1
There is a preparation method for the aluminium alloy of indium corrosion-resisting film, comprise the following steps:
1) aluminium alloy is carried out surface preparation: by aluminum alloy surface polishing to light; With deionized water rinsing; Under 40 DEG C of conditions, be placed in acetone and soak 20 minutes; Take out rear deionized water rinsing; Soak 20 minutes in the sodium hydroxide solution of the 5g/L of 40 DEG C, after taking out, use deionized water rinsing three times.
2) immersed completely by pretreated aluminium alloy and be dissolved with in organosilyl indium hydroxide conversion fluid, at aluminum alloy surface generation film formation reaction, temperature is 40 DEG C, and the time is 1.5 hours, forms corrosion-resisting film; Described to be dissolved with organosilyl indium hydroxide conversion fluid composed of the following components: indium hydroxide 25g/L, hydrogen peroxide 12g/L, vinyltrimethoxy silane 6g/L, propandiol butyl ether 3g/L, sodium hydride 2g/L, pH=1.8.
3) aluminium alloy after film forming is taken out, and by washed with de-ionized water, dry.
Embodiment 2
1) aluminium alloy is carried out surface preparation: by aluminum alloy surface polishing to light; With deionized water rinsing; Under 40 DEG C of conditions, be placed in acetone and soak 20 minutes; Take out rear deionized water rinsing; Soak 20 minutes in the sodium hydroxide solution of the 5g/L of 40 DEG C, after taking out, use deionized water rinsing three times.
2) immersed completely by pretreated aluminium alloy and be dissolved with in organosilyl indium hydroxide conversion fluid, at aluminum alloy surface generation film formation reaction, temperature is 40 DEG C, and the time is 1.5 hours, forms corrosion-resisting film; Described to be dissolved with organosilyl indium hydroxide conversion fluid composed of the following components: indium hydroxide 30g/L, hydrogen peroxide 12g/L, vinyltrimethoxy silane 6g/L, propandiol butyl ether 3g/L, sodium hydride 2g/L, pH=1.8.
3) aluminium alloy after film forming is taken out, and by washed with de-ionized water, dry.
Embodiment 3
1) aluminium alloy is carried out surface preparation: by aluminum alloy surface polishing to light; With deionized water rinsing; Under 40 DEG C of conditions, be placed in acetone and soak 20 minutes; Take out rear deionized water rinsing; Soak 20 minutes in the sodium hydroxide solution of the 5g/L of 40 DEG C, after taking out, use deionized water rinsing three times.
2) immersed completely by pretreated aluminium alloy and be dissolved with in organosilyl indium hydroxide conversion fluid, at aluminum alloy surface generation film formation reaction, temperature is 40 DEG C, and the time is 1.5 hours, forms corrosion-resisting film; Described to be dissolved with organosilyl indium hydroxide conversion fluid composed of the following components: indium hydroxide 27g/L, hydrogen peroxide 12g/L, vinyltrimethoxy silane 6g/L, propandiol butyl ether 3g/L, sodium hydride 2g/L, pH=1.8.
3) aluminium alloy after film forming is taken out, and by washed with de-ionized water, dry.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. there is a preparation method for the aluminium alloy of indium corrosion-resisting film, it is characterized in that, comprise the following steps:
1) aluminium alloy is carried out surface preparation;
2) immersion of pretreated aluminium alloy is dissolved with in organosilyl indium hydroxide conversion fluid, at aluminum alloy surface generation film formation reaction, forms corrosion-resisting film; Described to be dissolved with organosilyl indium hydroxide conversion fluid composed of the following components: indium hydroxide 25-30g/L, hydrogen peroxide 12g/L, vinyltrimethoxy silane 6g/L, propandiol butyl ether 3g/L, sodium hydride 2g/L, pH=1.8;
3) aluminium alloy after film forming is taken out, and by washed with de-ionized water, dry.
2. there is the preparation method of the aluminium alloy of indium corrosion-resisting film according to claim 1, it is characterized in that, step 1) in aluminium alloy carried out surface preparation method comprise the following steps: by aluminum alloy surface polishing to light; With deionized water rinsing; Under 40 DEG C of conditions, be placed in acetone and soak 20 minutes; Take out rear deionized water rinsing; Soak 20 minutes in the sodium hydroxide solution of the 5g/L of 40 DEG C, after taking out, use deionized water rinsing three times.
3. there is the preparation method of the aluminium alloy of indium corrosion-resisting film according to claim 1, it is characterized in that, step 2) in, the temperature of film formation reaction is 40 DEG C, and the time is 1.5 hours.
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| CN201510660296.4A CN105274515A (en) | 2015-10-14 | 2015-10-14 | Preparation method of aluminum alloy with indium anti-corrosion film |
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Citations (6)
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| US5607521A (en) * | 1991-11-15 | 1997-03-04 | Ipu Instituttet For Produktudvikling | Method for post-treatment of an article with a metallic surface as well as a treatment solution to be used in the method |
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| CN101163820A (en) * | 2005-04-28 | 2008-04-16 | 本田技研工业株式会社 | Method of chemical treatment and chemically treated member |
| CN101795973A (en) * | 2007-04-27 | 2010-08-04 | 日本化学工业株式会社 | Chromium hydroxide, its manufacture method, use containing of this chromium hydroxide chromic liquid and chrome-plating method |
| CN102409325A (en) * | 2011-12-06 | 2012-04-11 | 中国科学院金属研究所 | Environmentally-friendly corrosion-resistant chromium-free chemical conversion liquid and method for preparing chemical conversion film |
| CN102808170A (en) * | 2012-08-01 | 2012-12-05 | 天津大学 | Treating fluid for corrosion-resistant rare earth conversion film on surface of aluminum alloy, and application method thereof |
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2015
- 2015-10-14 CN CN201510660296.4A patent/CN105274515A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5607521A (en) * | 1991-11-15 | 1997-03-04 | Ipu Instituttet For Produktudvikling | Method for post-treatment of an article with a metallic surface as well as a treatment solution to be used in the method |
| CN1510166A (en) * | 2002-12-24 | 2004-07-07 | �ձ�������ʽ���� | Chemical conversion coating agent and metal with surface treatment |
| CN101163820A (en) * | 2005-04-28 | 2008-04-16 | 本田技研工业株式会社 | Method of chemical treatment and chemically treated member |
| CN101795973A (en) * | 2007-04-27 | 2010-08-04 | 日本化学工业株式会社 | Chromium hydroxide, its manufacture method, use containing of this chromium hydroxide chromic liquid and chrome-plating method |
| CN102409325A (en) * | 2011-12-06 | 2012-04-11 | 中国科学院金属研究所 | Environmentally-friendly corrosion-resistant chromium-free chemical conversion liquid and method for preparing chemical conversion film |
| CN102808170A (en) * | 2012-08-01 | 2012-12-05 | 天津大学 | Treating fluid for corrosion-resistant rare earth conversion film on surface of aluminum alloy, and application method thereof |
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| 屠振密等: "《防护装饰性镀层》", 29 February 2004 * |
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