CN102888641A - Aluminium alloy hard anodizing electrolyte and method - Google Patents
Aluminium alloy hard anodizing electrolyte and method Download PDFInfo
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Abstract
An aluminium alloy hard anodizing electrolyte and a method. The method comprises the following steps: degreasing, alkali biting, neutralizing, polishing, neutralizing, hard anodizing, secondary anodizing, sealing holes and drying. The hard anodizing electrolyte used in the hard anodizing comprises the following components per liter: (a) 50 to 100 g of sulfuric acid, (b) 20 to 40 g of propane diacid, (c) 10 to 30 g of oxalic acid, and (d) 1 to 10 g of glycerin. The aluminium alloy hard anodizing electrolyte and the method can produce a hard anodic oxide film with lubricity.
Description
[technical field]
The present invention relates to a kind of Hard Anodic Oxidation of Aluminum Alloy electrolytic solution and method, and be particularly related to a kind of electrolytic solution and method for preparing the hard anodized film with oilness.
[background technology]
The hard anodizing electrolysis process is a lot, and now widely used have (1) sulfuric acid hard anodizing method; (2) oxalic acid hard anodizing method; (3) mixed acid type hard anodizing method.
Aluminum alloy materials since surperficial matter soft, wear no resistance and the defective such as frictional coefficient height, so need carry out in use the tribology surface modification treatment of aluminium and aluminium alloy, namely at first carry out hard anodizing in aluminum alloy surface, then on the aluminium alloy film surface and the various oilness materials of inside deposition form slip coating, thereby the aluminum alloy surface frictional coefficient is reduced.
Aluminum or aluminum alloy anodic oxidation rear surface a large amount of nano level holes that distributing, exist higher free energy, but solid surface can not reduce the surface free energy of system by the method that reduces surface-area as liquid, can only adsorb the free energy that external agency reduces system.Therefore, in order to obtain to have the hard anodized film of oilness, traditional method is that the aluminum or aluminum alloy behind the anode is immersed in the aqueous dispersions of nano lubricating particle, yet the shortcoming of the method is nano particle, and easy the reunion grows up, when particle diameter during greater than the diameter of oxidation fenestra, cause lubricated granules can't enter into the hole that anodic oxidation forms, thereby affect the lubricant effect of anode oxide film.
[summary of the invention]
In view of this, the purpose of this invention is to provide a kind of Hard Anodic Oxidation of Aluminum Alloy electrolytic solution and method, generate the hard anodized film with oilness by this Hard Anodic Oxidation of Aluminum Alloy electrolytic solution and method.
In order to achieve the above object, the invention provides a kind of Hard Anodic Oxidation of Aluminum Alloy electrolytic solution, comprise following component in every liter of this electrolytic solution:
(a) sulfuric acid 50～100g;
(b) propanedioic acid 20～40g;
(c) oxalic acid 10～30g;
(d) glycerine 1～10g.
Especially, above-mentioned Hard Anodic Oxidation of Aluminum Alloy electrolytic solution comprises following component in every liter of this electrolytic solution:
(a) sulfuric acid 100g;
(b) propanedioic acid 20g;
(c) oxalic acid 20g;
(d) glycerine 2g.
Especially, above-mentioned Hard Anodic Oxidation of Aluminum Alloy electrolytic solution comprises following component in every liter of this electrolytic solution:
(a) sulfuric acid 80g;
(b) propanedioic acid 30g;
(c) oxalic acid 30g;
(d) glycerine 5g.
Especially, above-mentioned Hard Anodic Oxidation of Aluminum Alloy electrolytic solution comprises following component in every liter of this electrolytic solution:
(a) sulfuric acid 50g;
(b) propanedioic acid 40g;
(c) oxalic acid 30g;
(d) glycerine 6g.
In addition, the present invention also provides a kind of Hard Anodic Oxidation of Aluminum Alloy method, and it may further comprise the steps:
Degreasing → alkali is stung → is neutralized → polish → neutralize → hard anodizing → reanodizing → sealing of hole → baking; Comprise following component in every liter of the hard anodizing electrolytic solution that wherein uses during hard anodizing:
(a) sulfuric acid 50～100g;
(b) propanedioic acid 20～40g;
(c) oxalic acid 10～30g;
(d) glycerine 1～10g.
Especially, voltage is 30～100V during above-mentioned hard anodizing, and current density is 2.5～3.0A/dm
2, the treatment time is 50～300min, treatment temp is 15～21 ℃.
Especially, take sulfuric acid and ammonium tetrathiomolybdate as electrolytic solution, temperature is 15～30 ℃ during above-mentioned reanodizing, and voltage is 12～18V, and current density is 0.25～5A/dm
2, the treatment time is 30～300s.
Especially, be that the nickel acetate hole sealing agent of 0.7g/L carries out sealing of hole with concentration during above-mentioned sealing of hole, the sealing of hole temperature is 80 ℃, and pH is 5～6, and the treatment time is 10min.
Especially, the washing processing procedure is arranged in the above steps.
Especially, the hard anodized film thickness that obtains behind the two-step anodization is 50～300 μ m.
Compared to prior art, Hard Anodic Oxidation of Aluminum Alloy electrolytic solution of the present invention and method, can obtain the hardening oxidation rete of 50～300 μ m, form slip coating in aluminum alloy surface, and slip coating is combined with base material closely, can also make the more aluminium alloy of abrasion performance, Nai Gaore and anti-ultra-high voltage electric insulating quality, it can be applied in the future technologies such as electronics, computer, space industry, national defence military products, Precision Machinery Elements and solar facilities.
[embodiment]
The invention will be further described below in conjunction with specific embodiment.
Embodiment 1
To sting through degreasing, alkali, neutralize, carry out hard anodize 60min in the Al alloy parts dipping acid liquid bath after polishing and the neutralizing treatment, voltage is 30V, and current density is 2.5A/dm
2, treatment temp is 19～21 ℃, comprises following component in every liter of the electrolytic solution that wherein uses during hard anodizing:
(a) sulfuric acid 100g;
(b) propanedioic acid 20g;
(c) oxalic acid 20g;
(d) glycerine 2g;
Then the Al alloy parts behind the hard anodize is put into the mixed solution take sulfuric acid and ammonium tetrathiomolybdate as electrolytic solution, carry out the anodic oxidation treatment second time take aluminium as cathodal closing, treatment temp is 22～24 ℃, and voltage is 18V, and current density is 0.25A/dm
2, the treatment time is 60s, makes the reaction of anodic oxidation minute aperture inwall generate solid molybdenumdisulphide by the anodic oxidation second time, thereby obtains to have the anode oxide film of lubricant film; Then be that the nickel acetate hole sealing agent of 0.7g/L carries out sealing of hole with concentration, the sealing of hole temperature is 80 ℃, pH=5～6, and sealing of hole is processed 10min, the hard anodic oxidation coating product that can obtain having fine oilness.
Embodiment 2
To sting through degreasing, alkali, neutralize, carry out hard anodize 120min in the Al alloy parts dipping acid liquid bath after polishing and the neutralizing treatment, voltage is 60V, and current density is 3.0A/dm
2, treatment temp is 17～19 ℃, comprises following component in every liter of the electrolytic solution that wherein uses during hard anodizing:
(a) sulfuric acid 80g;
(b) propanedioic acid 30g;
(c) oxalic acid 30g;
(d) glycerine 5g;
Then the Al alloy parts behind the hard anodize is put into the mixed solution take sulfuric acid and ammonium tetrathiomolybdate as electrolytic solution, carry out the anodic oxidation treatment second time take graphite as cathodal closing, treatment temp is 22～24 ℃, and voltage is 13V, and current density is 1.5A/dm
2, the treatment time is 150s, makes the reaction of anodic oxidation minute aperture inwall generate solid molybdenumdisulphide by the anodic oxidation second time, thereby obtains to have the anode oxide film of lubricant film; Then be that the nickel acetate hole sealing agent of 0.7g/L carries out sealing of hole with concentration, the sealing of hole temperature is 80 ℃, pH=5～6, and sealing of hole is processed 10min, the hard anodic oxidation coating product that can obtain having fine oilness.
Embodiment 3
To sting through degreasing, alkali, neutralize, carry out hard anodize 250min in the Al alloy parts dipping acid liquid bath after polishing and the neutralizing treatment, voltage is 90V, and current density is 2.5～3.0A/dm
2, treatment temp is 15～17 ℃, comprises following component in every liter of the electrolytic solution that wherein uses during hard anodizing:
(a) sulfuric acid 50g;
(b) propanedioic acid 40g;
(c) oxalic acid 30g;
(d) glycerine 6g;
Then the Al alloy parts behind the hard anodize is put into the mixed solution take sulfuric acid and ammonium tetrathiomolybdate as electrolytic solution, carry out the anodic oxidation treatment second time take graphite as cathodal closing, treatment temp is 22～24 ℃, and voltage is 15V, and current density is 3A/dm
2, the treatment time is 300s, makes the reaction of anodic oxidation minute aperture inwall generate solid molybdenumdisulphide by the anodic oxidation second time, thereby obtains to have the anode oxide film of lubricant film; Then be that the nickel acetate hole sealing agent of 0.7g/L carries out sealing of hole with concentration, the sealing of hole temperature is 80 ℃, pH=5～6, and sealing of hole is processed 10min, the hard anodic oxidation coating product that can obtain having fine oilness.
Hard Anodic Oxidation of Aluminum Alloy electrolytic solution of the present invention and method, can obtain the hardening oxidation rete of 50～300 μ m, form slip coating in aluminum alloy surface, and slip coating is combined with base material closely, can also make the more aluminium alloy of abrasion performance, Nai Gaore and anti-ultra-high voltage electric insulating quality, it can be applied in the future technologies such as electronics, computer, space industry, national defence military products, Precision Machinery Elements and solar facilities.
Be pointed out that, the invention is not restricted to above-mentioned embodiment, any simple modification, equivalent variations and modification that any those skilled in the art do above-described embodiment based on technical solution of the present invention all fall within the scope of protection of the present invention.
Claims (10)
1. a Hard Anodic Oxidation of Aluminum Alloy electrolytic solution is characterized in that, comprises following component in every liter of this electrolytic solution:
(a) sulfuric acid 50～100g;
(b) propanedioic acid 20～40g;
(c) oxalic acid 10～30g;
(d) glycerine 1～10g.
2. Hard Anodic Oxidation of Aluminum Alloy electrolytic solution according to claim 1 is characterized in that, comprises following component in every liter of this electrolytic solution:
(a) sulfuric acid 100g;
(b) propanedioic acid 20g;
(c) oxalic acid 20g;
(d) glycerine 2g.
3. Hard Anodic Oxidation of Aluminum Alloy electrolytic solution according to claim 1 is characterized in that, comprises following component in every liter of this electrolytic solution:
(a) sulfuric acid 80g;
(b) propanedioic acid 30g;
(c) oxalic acid 30g;
(d) glycerine 5g.
4. Hard Anodic Oxidation of Aluminum Alloy electrolytic solution according to claim 1 is characterized in that, comprises following component in every liter of this electrolytic solution:
(a) sulfuric acid 50g;
(b) propanedioic acid 40g;
(c) oxalic acid 30g;
(d) glycerine 6g.
5. Hard Anodic Oxidation of Aluminum Alloy method is characterized in that it may further comprise the steps:
Degreasing → alkali is stung → is neutralized → polish → neutralize → hard anodizing → reanodizing → sealing of hole → baking; Comprise following component in every liter of the hard anodizing electrolytic solution that wherein uses during hard anodizing:
(a) sulfuric acid 50～100g;
(b) propanedioic acid 20～40g;
(c) oxalic acid 10～30g;
(d) glycerine 1～10g.
6. Hard Anodic Oxidation of Aluminum Alloy method according to claim 5 is characterized in that, voltage is 30～100V during above-mentioned hard anodizing, and current density is 2.5～3.0A/dm
2, the treatment time is 50～300min, treatment temp is 15～21 ℃.
7. Hard Anodic Oxidation of Aluminum Alloy method according to claim 5 is characterized in that, take sulfuric acid and ammonium tetrathiomolybdate as electrolytic solution, temperature is 15～30 ℃ during above-mentioned reanodizing, and voltage is 12～18V, and current density is 0.25～5A/dm
2, the treatment time is 30～300s.
8. Hard Anodic Oxidation of Aluminum Alloy method according to claim 5 is characterized in that, is that the nickel acetate hole sealing agent of 0.7g/L carries out sealing of hole with concentration during above-mentioned sealing of hole, and the sealing of hole temperature is 80 ℃, and pH is 5～6, and the treatment time is 10min.
9. Hard Anodic Oxidation of Aluminum Alloy method according to claim 5 is characterized in that, the washing processing procedure is arranged in the above steps.
10. Hard Anodic Oxidation of Aluminum Alloy method according to claim 5 is characterized in that, the anodic oxidation film thickness that obtains behind the above-mentioned two-step anodization is 50～300um.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233259A (en) * | 2013-05-10 | 2013-08-07 | 黄山金瑞泰科技有限公司 | Oxidation treatment process of computer to plate (CTP) plate material |
| CN103451702A (en) * | 2013-08-13 | 2013-12-18 | 河南辉龙铝业股份有限公司 | Aluminum profile anodizing method |
| CN103484916A (en) * | 2013-09-29 | 2014-01-01 | 苏州利达铸造有限公司 | Anodic oxidation treatment process of die-casting aluminum alloy for digital electronic product |
| CN103981556A (en) * | 2014-05-19 | 2014-08-13 | 广东美芝制冷设备有限公司 | Electrolyte for hard-anodizing of aluminum alloys and preparation method of aluminum alloy hard self-lubricating coatings |
| CN105200487A (en) * | 2015-09-24 | 2015-12-30 | 马鞍山杰创塑胶科技有限公司 | Salt-fog-resistant aluminum alloy anode oxide film nickel-free hole sealing agent and preparation method thereof |
| CN105401201A (en) * | 2015-12-22 | 2016-03-16 | 上海申和热磁电子有限公司 | Anodic oxidation technology used for aluminum alloy base material of TFT liquid crystal glass panel |
| CN107090590A (en) * | 2017-04-24 | 2017-08-25 | 南京邮电大学 | A kind of aluminium alloy anode oxide electrolyte and oxidation technology based on corrosion inhibiter |
| CN110373699A (en) * | 2019-08-22 | 2019-10-25 | 南昌航空大学 | A kind of ZL105 aluminium alloy sand casting hard anodizing electrolyte and method for oxidation |
| CN110607549A (en) * | 2019-08-20 | 2019-12-24 | 帝京半导体科技(苏州)有限公司 | Anti-static hard anodic oxidation process |
| CN112899749A (en) * | 2021-01-25 | 2021-06-04 | 广东智目科技有限公司 | Anodic oxidation electrolyte and anodic oxidation method of appearance camera |
| CN113755923A (en) * | 2020-09-18 | 2021-12-07 | 英迪那米(徐州)半导体科技有限公司 | Aluminum alloy hard anodic oxidation electrolyte and preparation method thereof |
| CN114214698A (en) * | 2022-01-12 | 2022-03-22 | 江阴迈科美新能源科技有限公司 | Aluminum profile anodic oxidation process applied to photovoltaic frame |
| CN114540907A (en) * | 2022-02-27 | 2022-05-27 | 王传荣 | Preparation method of fatigue-resistant aluminum alloy |
| CN114737237A (en) * | 2022-02-27 | 2022-07-12 | 王传荣 | Preparation method of coating material |
| CN117512735A (en) * | 2023-11-20 | 2024-02-06 | 江苏凯威特斯半导体科技有限公司 | Hard anodic oxidation method for aluminum alloy |
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| CN103233259A (en) * | 2013-05-10 | 2013-08-07 | 黄山金瑞泰科技有限公司 | Oxidation treatment process of computer to plate (CTP) plate material |
| CN103451702A (en) * | 2013-08-13 | 2013-12-18 | 河南辉龙铝业股份有限公司 | Aluminum profile anodizing method |
| CN103484916A (en) * | 2013-09-29 | 2014-01-01 | 苏州利达铸造有限公司 | Anodic oxidation treatment process of die-casting aluminum alloy for digital electronic product |
| CN103484916B (en) * | 2013-09-29 | 2016-05-18 | 苏州利达铸造有限公司 | The anodized technique of pack alloy for a kind of digital electronic goods |
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| CN107090590A (en) * | 2017-04-24 | 2017-08-25 | 南京邮电大学 | A kind of aluminium alloy anode oxide electrolyte and oxidation technology based on corrosion inhibiter |
| CN110607549A (en) * | 2019-08-20 | 2019-12-24 | 帝京半导体科技(苏州)有限公司 | Anti-static hard anodic oxidation process |
| CN110373699A (en) * | 2019-08-22 | 2019-10-25 | 南昌航空大学 | A kind of ZL105 aluminium alloy sand casting hard anodizing electrolyte and method for oxidation |
| CN110373699B (en) * | 2019-08-22 | 2021-04-02 | 南昌航空大学 | Hard anodic oxidation electrolyte and oxidation method for ZL105 aluminum alloy sand casting |
| CN113755923A (en) * | 2020-09-18 | 2021-12-07 | 英迪那米(徐州)半导体科技有限公司 | Aluminum alloy hard anodic oxidation electrolyte and preparation method thereof |
| CN112899749A (en) * | 2021-01-25 | 2021-06-04 | 广东智目科技有限公司 | Anodic oxidation electrolyte and anodic oxidation method of appearance camera |
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| CN114540907A (en) * | 2022-02-27 | 2022-05-27 | 王传荣 | Preparation method of fatigue-resistant aluminum alloy |
| CN114737237A (en) * | 2022-02-27 | 2022-07-12 | 王传荣 | Preparation method of coating material |
| CN114737237B (en) * | 2022-02-27 | 2024-01-05 | 营口赛斯德型材有限公司 | Preparation method of coating material |
| CN117512735A (en) * | 2023-11-20 | 2024-02-06 | 江苏凯威特斯半导体科技有限公司 | Hard anodic oxidation method for aluminum alloy |
| CN117512735B (en) * | 2023-11-20 | 2024-10-18 | 江苏凯威特斯半导体科技有限公司 | Hard anodic oxidation method for aluminum alloy |
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