SU71375A1 - Method of anodic oxidation of aluminum and its alloys in phosphoric acid - Google Patents
Method of anodic oxidation of aluminum and its alloys in phosphoric acidInfo
- Publication number
- SU71375A1 SU71375A1 SU10948A SU355368A SU71375A1 SU 71375 A1 SU71375 A1 SU 71375A1 SU 10948 A SU10948 A SU 10948A SU 355368 A SU355368 A SU 355368A SU 71375 A1 SU71375 A1 SU 71375A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- phosphoric acid
- aluminum
- alloys
- anodic oxidation
- anodic
- Prior art date
Links
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- Chemical Treatment Of Metals (AREA)
Description
Способ анодного оксидировани алюмини и его снлавов в фосфорной кислотеMethod of anodic oxidation of aluminum and its cathodes in phosphoric acid
За влено 15 апрел 1947 года в хМинистерство авиационной промышленности СССРIt was filed on April 15, 1947 at the USSR Ministry of Aviation Industry
за № 10948 (355368)No. 10948 (355368)
Опубликовано 30 апрел 1948 годаPublished April 30, 1948
В насто щее врем основным способом анодного оксидировани алюминиевых сплавов дл защиты от коррозии вл етс анодна обработка в серной кислоте посто нным или переменным током. Обработка в серной кислоте св зана с применением свинца дл облицовки ванн, в которых производитс обработка.At present, the main method of anodic oxidation of aluminum alloys for corrosion protection is anodic treatment in sulfuric acid with direct or alternating current. Sulfuric acid treatment is associated with lead for cladding baths.
Изобретение позвол ет производить обработку сплавов в фосфорной кислоте вместо серной; при этом отпадает необходимость облицовки ванны свинцом .The invention allows the processing of alloys in phosphoric acid instead of sulfuric; this eliminates the need for facing the bath with lead.
Согласно исследованию при анодной обработке в фосфорной кислоте возможно получить анодные пленки, приближающиес по защитным от коррозии свойствам к пленкам, полученным в серной кислоте.According to the study, when anodic treatment in phosphoric acid, it is possible to obtain anodic films that approach in their anti-corrosion properties to films obtained in sulfuric acid.
Коррозионные испытани при полном погружении в однопроцентный раствор хлористого натри с добавкой 0,5% перекиси водорода не показали заметной разницы в скорости коррозии образцов из плакирован22 Свод в. 4.Corrosion tests, when fully immersed in a one percent solution of sodium chloride with the addition of 0.5% hydrogen peroxide, did not show a noticeable difference in the corrosion rate of specimens from plated. four.
КОГО дуралюмини анодированных в серной и фосфорной кислотах.WHOM duralumin anodized in sulfuric and phosphoric acids.
Скорость коррозии стали в фосфорной кислоте значительно снизитс при добавлении в кислоту травильных присадок.The corrosion rate of steel in phosphoric acid is significantly reduced when pickling additives are added to the acid.
Добавление хроматов в фосфорную кислоту заметно понижает скорость коррозии алюмини . Таким образом фосфорнокислый электролит должен помимо фосфорной кислоты содержать xpoAiaTbi и травильные присадки .The addition of chromates to phosphoric acid significantly reduces the corrosion rate of aluminum. Thus, the phosphate electrolyte should contain, in addition to phosphoric acid, xpoAiaTbi and pickling additives.
Рекомендуетс к 20-55% раствору ортофосфорной кислоты добавл ть 0,1-1% травильной присадки и 0,1-It is recommended to add 0.1-1% pickling agent and 0.1-% to a 20-55% solution of orthophosphoric acid.
1°/ 1 ° /
соединении шестивалентного хрома.hexavalent chromium compound.
Предмет изобретени Subject invention
1. Способ анодного оксидировани алюмини и его сплавов в фосфорной кислоте, отличающийс тем, что к электролиту, содержащему1. A method of anodic oxidizing aluminum and its alloys in phosphoric acid, characterized in that the electrolyte containing
337337
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU10948A SU71375A1 (en) | 1947-04-15 | 1947-04-15 | Method of anodic oxidation of aluminum and its alloys in phosphoric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU10948A SU71375A1 (en) | 1947-04-15 | 1947-04-15 | Method of anodic oxidation of aluminum and its alloys in phosphoric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU71375A1 true SU71375A1 (en) | 1947-11-30 |
Family
ID=48248461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU10948A SU71375A1 (en) | 1947-04-15 | 1947-04-15 | Method of anodic oxidation of aluminum and its alloys in phosphoric acid |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU71375A1 (en) |
-
1947
- 1947-04-15 SU SU10948A patent/SU71375A1/en active
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