CN110878420A - Aluminum alloy anodic oxidation liquid and aluminum alloy surface treatment method - Google Patents
Aluminum alloy anodic oxidation liquid and aluminum alloy surface treatment method Download PDFInfo
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- CN110878420A CN110878420A CN201911311650.7A CN201911311650A CN110878420A CN 110878420 A CN110878420 A CN 110878420A CN 201911311650 A CN201911311650 A CN 201911311650A CN 110878420 A CN110878420 A CN 110878420A
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- aluminum alloy
- anodic oxidation
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
Abstract
The invention discloses an aluminum alloy anodic oxidation solution which is an aqueous solution containing sodium tartrate, sodium tripolyphosphate, sodium molybdate, absolute ethyl alcohol, aluminum powder and adenine. The preparation method comprises the following steps: step 1, preparing an aluminum alloy anode oxidation solution: sequentially adding sodium tartrate, sodium tripolyphosphate, sodium molybdate, absolute ethyl alcohol, aluminum powder and adenine into water, and mixing to obtain an aluminum alloy anodic oxidation solution; step 2, cleaning the surface of the aluminum alloy with acetone, then repeatedly cleaning the surface of the aluminum alloy with clear water for 3-4 times, then carrying out alkali washing on the surface of the aluminum alloy with alkali liquor, then repeatedly cleaning the surface of the aluminum alloy with clear water for 3-4 times, and drying for later use; step 3, putting the aluminum alloy cleaned in the step 2 into an aluminum alloy anodic oxidation solution for anodic oxidation treatment; and 4, cleaning the aluminum alloy treated in the step 3 with water again, and drying to obtain the aluminum alloy. The anodic oxidation liquid can form an oxidation film layer with good uniformity and compactness on the surface of the aluminum alloy.
Description
Technical Field
The invention belongs to the technical field of aluminum alloy surface treatment, and particularly relates to an aluminum alloy anodic oxidation liquid.
Background
Aluminum alloys are the most widely used class of non-ferrous structural materials in industry and have found a number of applications in the aerospace, automotive, mechanical manufacturing, marine and chemical industries. The rapid development of industrial economy has increased the demand for welded aluminum alloy structural members. However, some properties of the existing aluminum and aluminum alloy are not ideal enough, such as hardness, wear resistance, corrosion resistance and the like; particularly, the surface of the aluminum alloy is easy to form local hole defects, so that the protective performance of the oxide film is reduced.
Disclosure of Invention
The invention aims to provide an aluminum alloy anodic oxidation liquid, which can form an oxidation film layer with good uniformity and compactness on the surface of an aluminum alloy.
Another object of the present invention is to provide a surface treatment method for an aluminum alloy.
The technical scheme adopted by the invention is that the aluminum alloy anode oxidation solution is an aqueous solution containing sodium tartrate, sodium tripolyphosphate, sodium molybdate, absolute ethyl alcohol, aluminum powder and adenine.
The present invention is also characterized in that,
the aluminum alloy anodic oxidation liquid comprises the following raw materials in percentage by weight: 0.3-1g/L of sodium tartrate, 0.5-2g/L of sodium tripolyphosphate, 1-3g/L of sodium molybdate, 5-10g/L of absolute ethyl alcohol, 1.5-2.5g/L of aluminum powder and 0.5-1g/L of adenine.
The second technical scheme adopted by the invention is that the aluminum alloy surface treatment method comprises the following steps:
step 1, preparing an aluminum alloy anode oxidation solution: sequentially adding sodium tartrate, sodium tripolyphosphate, sodium molybdate, absolute ethyl alcohol, aluminum powder and adenine into water, and mixing to obtain an aluminum alloy anodic oxidation solution;
step 2, cleaning the surface of the aluminum alloy with acetone, then repeatedly cleaning the surface of the aluminum alloy with clear water for 3-4 times, then carrying out alkali washing on the surface of the aluminum alloy with alkali liquor, then repeatedly cleaning the surface of the aluminum alloy with clear water for 3-4 times, and drying for later use;
step 3, putting the aluminum alloy cleaned in the step 2 into an aluminum alloy anodic oxidation solution for anodic oxidation treatment;
and 4, cleaning the aluminum alloy treated in the step 3 with water again, and drying to obtain the aluminum alloy.
The present invention is also characterized in that,
in the step 1, the aluminum alloy anodic oxidation liquid comprises the following raw materials in percentage by weight: 0.3-1g/L of sodium tartrate, 0.5-2g/L of sodium tripolyphosphate, 1-3g/L of sodium molybdate, 5-10g/L of absolute ethyl alcohol, 1.5-2.5g/L of aluminum powder and 0.5-1g/L of adenine.
In step 2, the alkali liquor is sodium hydroxide aqueous solution with the pH value of 10-11.
In step 3, the treatment conditions of the anodic oxidation treatment are as follows: treating for 1-2min under the conditions of temperature of 30-40 ℃ and voltage of 20-30V.
The invention has the beneficial effects that:
the aluminum alloy anodic oxidation liquid can form an oxidation film layer with good uniformity and compactness on the surface of the aluminum alloy, and the surface treatment method is simple and easy to operate.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The invention provides an aluminum alloy anodic oxidation solution which is an aqueous solution containing sodium tartrate, sodium tripolyphosphate, sodium molybdate, absolute ethyl alcohol, aluminum powder and adenine.
The aluminum alloy anodic oxidation liquid comprises the following raw materials in percentage by weight: 0.3-1g/L of sodium tartrate, 0.5-2g/L of sodium tripolyphosphate, 1-3g/L of sodium molybdate, 5-10g/L of absolute ethyl alcohol, 1.5-2.5g/L of aluminum powder and 0.5-1g/L of adenine.
The invention also provides an aluminum alloy surface treatment method, which comprises the following steps:
step 1, preparing an aluminum alloy anode oxidation solution: sequentially adding sodium tartrate, sodium tripolyphosphate, sodium molybdate, absolute ethyl alcohol, aluminum powder and adenine into water, and mixing to obtain an aluminum alloy anodic oxidation solution;
step 2, cleaning the surface of the aluminum alloy with acetone, then repeatedly cleaning the surface of the aluminum alloy with clear water for 3-4 times, then carrying out alkali washing on the surface of the aluminum alloy with alkali liquor, then repeatedly cleaning the surface of the aluminum alloy with clear water for 3-4 times, and drying for later use;
step 3, putting the aluminum alloy cleaned in the step 2 into an aluminum alloy anodic oxidation solution for anodic oxidation treatment;
and 4, cleaning the aluminum alloy treated in the step 3 with water again, and drying to obtain the aluminum alloy.
In the step 1, the aluminum alloy anodic oxidation liquid comprises the following raw materials in percentage by weight: 0.3-1g/L of sodium tartrate, 0.5-2g/L of sodium tripolyphosphate, 1-3g/L of sodium molybdate, 5-10g/L of absolute ethyl alcohol, 1.5-2.5g/L of aluminum powder and 0.5-1g/L of adenine.
In step 2, the alkali liquor is sodium hydroxide aqueous solution with the pH value of 10-11.
In step 3, the treatment conditions of the anodic oxidation treatment are as follows: treating for 1-2min under the conditions of temperature of 30-40 ℃ and voltage of 20-30V.
Example 1
An aluminum alloy surface treatment method comprises the following steps:
step 1, preparing an aluminum alloy anode oxidation solution: sequentially adding sodium tartrate, sodium tripolyphosphate, sodium molybdate, absolute ethyl alcohol, aluminum powder and adenine into water, and mixing to obtain an aluminum alloy anodic oxidation solution;
step 2, cleaning the surface of the aluminum alloy with acetone, then repeatedly cleaning the surface of the aluminum alloy with clear water for 3 times, then carrying out alkali washing on the surface of the aluminum alloy with alkali liquor, then repeatedly cleaning the surface of the aluminum alloy with clear water for 3 times, and drying the surface of the aluminum alloy for later use;
step 3, putting the aluminum alloy cleaned in the step 2 into an aluminum alloy anodic oxidation solution for anodic oxidation treatment;
and 4, cleaning the aluminum alloy treated in the step 3 with water again, and drying to obtain the aluminum alloy.
In the step 1, the aluminum alloy anodic oxidation liquid comprises the following raw materials in percentage by weight: 0.3g/L of sodium tartrate, 0.5g/L of sodium tripolyphosphate, 1g/L of sodium molybdate, 5-g/L of absolute ethyl alcohol, 1.5g/L of aluminum powder and 0.5g/L of adenine.
In step 2, the alkali liquor is sodium hydroxide aqueous solution with the pH value of 10.
In step 3, the treatment conditions of the anodic oxidation treatment are as follows: treating at 30 deg.C and 20V for 1 min.
Example 2
An aluminum alloy surface treatment method comprises the following steps:
step 1, preparing an aluminum alloy anode oxidation solution: sequentially adding sodium tartrate, sodium tripolyphosphate, sodium molybdate, absolute ethyl alcohol, aluminum powder and adenine into water, and mixing to obtain an aluminum alloy anodic oxidation solution;
step 2, cleaning the surface of the aluminum alloy with acetone, then repeatedly cleaning the surface of the aluminum alloy with clear water for 4 times, then carrying out alkali washing on the surface of the aluminum alloy with alkali liquor, then repeatedly cleaning the surface of the aluminum alloy with clear water for 4 times, and drying the aluminum alloy for later use;
step 3, putting the aluminum alloy cleaned in the step 2 into an aluminum alloy anodic oxidation solution for anodic oxidation treatment;
and 4, cleaning the aluminum alloy treated in the step 3 with water again, and drying to obtain the aluminum alloy.
In the step 1, the aluminum alloy anodic oxidation liquid comprises the following raw materials in percentage by weight: 1g/L of sodium tartrate, 2g/L of sodium tripolyphosphate, 3g/L of sodium molybdate, 10g/L of absolute ethyl alcohol, 2.5g/L of aluminum powder and 1g/L of adenine.
In step 2, the alkali liquor is sodium hydroxide aqueous solution with pH value of 11.
In step 3, the treatment conditions of the anodic oxidation treatment are as follows: treating at 40 deg.C and 30V for 2 min.
Example 3
An aluminum alloy surface treatment method comprises the following steps:
step 1, preparing an aluminum alloy anode oxidation solution: sequentially adding sodium tartrate, sodium tripolyphosphate, sodium molybdate, absolute ethyl alcohol, aluminum powder and adenine into water, and mixing to obtain an aluminum alloy anodic oxidation solution;
step 2, cleaning the surface of the aluminum alloy with acetone, then repeatedly cleaning the surface of the aluminum alloy with clear water for 4 times, then carrying out alkali washing on the surface of the aluminum alloy with alkali liquor, then repeatedly cleaning the surface of the aluminum alloy with clear water for 4 times, and drying the aluminum alloy for later use;
step 3, putting the aluminum alloy cleaned in the step 2 into an aluminum alloy anodic oxidation solution for anodic oxidation treatment;
and 4, cleaning the aluminum alloy treated in the step 3 with water again, and drying to obtain the aluminum alloy.
In the step 1, the aluminum alloy anodic oxidation liquid comprises the following raw materials in percentage by weight: 0.4g/L of sodium tartrate, 0.6g/L of sodium tripolyphosphate, 2g/L of sodium molybdate, 6g/L of absolute ethyl alcohol, 2g/L of aluminum powder and 0.7g/L of adenine.
In step 2, the alkali liquor is sodium hydroxide aqueous solution with the pH value of 10.
In step 3, the treatment conditions of the anodic oxidation treatment are as follows: treating at 35 deg.C and 25V for 1.5 min.
Example 4
An aluminum alloy surface treatment method comprises the following steps:
step 1, preparing an aluminum alloy anode oxidation solution: sequentially adding sodium tartrate, sodium tripolyphosphate, sodium molybdate, absolute ethyl alcohol, aluminum powder and adenine into water, and mixing to obtain an aluminum alloy anodic oxidation solution;
step 2, cleaning the surface of the aluminum alloy with acetone, then repeatedly cleaning the surface of the aluminum alloy with clear water for 4 times, then carrying out alkali washing on the surface of the aluminum alloy with alkali liquor, then repeatedly cleaning the surface of the aluminum alloy with clear water for 3 times, and drying the surface of the aluminum alloy for later use;
step 3, putting the aluminum alloy cleaned in the step 2 into an aluminum alloy anodic oxidation solution for anodic oxidation treatment;
and 4, cleaning the aluminum alloy treated in the step 3 with water again, and drying to obtain the aluminum alloy.
In the step 1, the aluminum alloy anodic oxidation liquid comprises the following raw materials in percentage by weight: 0.8g/L of sodium tartrate, 0.5g/L of sodium tripolyphosphate, 1g/L of sodium molybdate, 6g/L of absolute ethyl alcohol, 1.8g/L of aluminum powder and 0.5g/L of adenine.
In step 2, the alkali liquor is sodium hydroxide aqueous solution with the pH value of 10.
In step 3, the treatment conditions of the anodic oxidation treatment are as follows: treating at 40 deg.C and 20V for 2 min.
Example 5
An aluminum alloy surface treatment method comprises the following steps:
step 1, preparing an aluminum alloy anode oxidation solution: sequentially adding sodium tartrate, sodium tripolyphosphate, sodium molybdate, absolute ethyl alcohol, aluminum powder and adenine into water, and mixing to obtain an aluminum alloy anodic oxidation solution;
step 2, cleaning the surface of the aluminum alloy with acetone, then repeatedly cleaning the surface of the aluminum alloy with clear water for 3 times, then carrying out alkali washing on the surface of the aluminum alloy with alkali liquor, then repeatedly cleaning the surface of the aluminum alloy with clear water for 4 times, and drying the aluminum alloy for later use;
step 3, putting the aluminum alloy cleaned in the step 2 into an aluminum alloy anodic oxidation solution for anodic oxidation treatment;
and 4, cleaning the aluminum alloy treated in the step 3 with water again, and drying to obtain the aluminum alloy.
In the step 1, the aluminum alloy anodic oxidation liquid comprises the following raw materials in percentage by weight: 1g/L of sodium tartrate, 0.5g/L of sodium tripolyphosphate, 1g/L of sodium molybdate, 5g/L of absolute ethyl alcohol, 1.5g/L of aluminum powder and 1g/L of adenine.
In step 2, the alkali liquor is sodium hydroxide aqueous solution with pH value of 11.
In step 3, the treatment conditions of the anodic oxidation treatment are as follows: treating at 40 deg.C and 25V for 1 min.
Claims (6)
1. The aluminum alloy anode oxidation solution is characterized by being an aqueous solution containing sodium tartrate, sodium tripolyphosphate, sodium molybdate, absolute ethyl alcohol, aluminum powder and adenine.
2. The aluminum alloy anodic oxidation solution according to claim 1, wherein the aluminum alloy anodic oxidation solution comprises the following raw materials in percentage by weight: 0.3-1g/L of sodium tartrate, 0.5-2g/L of sodium tripolyphosphate, 1-3g/L of sodium molybdate, 5-10g/L of absolute ethyl alcohol, 1.5-2.5g/L of aluminum powder and 0.5-1g/L of adenine.
3. The aluminum alloy surface treatment method is characterized by comprising the following steps of:
step 1, preparing an aluminum alloy anode oxidation solution: sequentially adding sodium tartrate, sodium tripolyphosphate, sodium molybdate, absolute ethyl alcohol, aluminum powder and adenine into water, and mixing to obtain an aluminum alloy anodic oxidation solution;
step 2, cleaning the surface of the aluminum alloy with acetone, then repeatedly cleaning the surface of the aluminum alloy with clear water for 3-4 times, then carrying out alkali washing on the surface of the aluminum alloy with alkali liquor, then repeatedly cleaning the surface of the aluminum alloy with clear water for 3-4 times, and drying for later use;
step 3, putting the aluminum alloy cleaned in the step 2 into an aluminum alloy anodic oxidation solution for anodic oxidation treatment;
and 4, cleaning the aluminum alloy treated in the step 3 with water again, and drying to obtain the aluminum alloy.
4. The aluminum alloy surface treatment method according to claim 3, wherein in the step 1, the aluminum alloy anodizing solution contains the following raw materials: 0.3-1g/L of sodium tartrate, 0.5-2g/L of sodium tripolyphosphate, 1-3g/L of sodium molybdate, 5-10g/L of absolute ethyl alcohol, 1.5-2.5g/L of aluminum powder and 0.5-1g/L of adenine.
5. The method for treating the surface of the aluminum alloy as recited in claim 3, wherein in the step 2, the alkali solution is an aqueous solution of sodium hydroxide having a pH of 10 to 11.
6. The surface treatment method of an aluminum alloy as set forth in claim 3, wherein in the step 3, the treatment conditions of the anodic oxidation treatment are as follows: treating for 1-2min under the conditions of temperature of 30-40 ℃ and voltage of 20-30V.
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Citations (4)
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|---|---|---|---|---|
| US5205922A (en) * | 1990-11-20 | 1993-04-27 | The United States Of America As Represented By The Secretary Of The Navy | Formation of pitting resistant anodized films on aluminum |
| CN104404598A (en) * | 2014-11-10 | 2015-03-11 | 常州大学 | Anodic oxidation liquid of aluminum alloy and two-time anodic oxidation technology |
| CN108239777A (en) * | 2018-03-15 | 2018-07-03 | 南京煜京光电仪器有限公司 | A kind of anode oxidation process for lens barrel processing |
| CN109423681A (en) * | 2017-08-30 | 2019-03-05 | 比亚迪股份有限公司 | A kind of anodic oxidation of magnetism alloy liquid and preparation method thereof and anodic oxidation method for magnesium alloy |
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2019
- 2019-12-18 CN CN201911311650.7A patent/CN110878420A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5205922A (en) * | 1990-11-20 | 1993-04-27 | The United States Of America As Represented By The Secretary Of The Navy | Formation of pitting resistant anodized films on aluminum |
| CN104404598A (en) * | 2014-11-10 | 2015-03-11 | 常州大学 | Anodic oxidation liquid of aluminum alloy and two-time anodic oxidation technology |
| CN109423681A (en) * | 2017-08-30 | 2019-03-05 | 比亚迪股份有限公司 | A kind of anodic oxidation of magnetism alloy liquid and preparation method thereof and anodic oxidation method for magnesium alloy |
| CN108239777A (en) * | 2018-03-15 | 2018-07-03 | 南京煜京光电仪器有限公司 | A kind of anode oxidation process for lens barrel processing |
Non-Patent Citations (2)
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| 任广军: "《电镀工艺学》", 31 December 2016, 中国建材工业出版社 * |
| 高云霞 等: "《铝合金表面处理》", 31 January 1991, 冶金工业出版社 * |
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Application publication date: 20200313 |