SU639964A1 - Zing parkerizing solution - Google Patents

Zing parkerizing solution

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Publication number
SU639964A1
SU639964A1 SU772463368A SU2463368A SU639964A1 SU 639964 A1 SU639964 A1 SU 639964A1 SU 772463368 A SU772463368 A SU 772463368A SU 2463368 A SU2463368 A SU 2463368A SU 639964 A1 SU639964 A1 SU 639964A1
Authority
SU
USSR - Soviet Union
Prior art keywords
zinc
solution
sodium
iodide
steel
Prior art date
Application number
SU772463368A
Other languages
Russian (ru)
Inventor
Татьяна Андреевна Лаврова
Григорий Николаевич Соркин
Марта Ивановна Таранцова
Анатолий Алексеевич Якименко
Анатолий Дмитриевич Плахотников
Николай Федорович Кулюткин
Иван Пантелеевич Кривошапов
Original Assignee
Институт Физико-Химических Основ Переработки Минерального Сырья Со Ан Ссср
Завод "Сибсельмаш"
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Институт Физико-Химических Основ Переработки Минерального Сырья Со Ан Ссср, Завод "Сибсельмаш" filed Critical Институт Физико-Химических Основ Переработки Минерального Сырья Со Ан Ссср
Priority to SU772463368A priority Critical patent/SU639964A1/en
Application granted granted Critical
Publication of SU639964A1 publication Critical patent/SU639964A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
    • C23C22/36—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates
    • C23C22/362—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates containing also zinc cations

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)

Description

1one

Изобретение относитс  к области нанесени  на металлы защитно-декоративных покрытий, в частности фосфатных .The invention relates to the field of the application of protective decorative coatings, in particular phosphate coatings, to metals.

Известен раствор дл  фосфатировани  цинка, содержащий дигидрофосфат цинка, нитрат цинка, фторид натри  и фосфорную кислоту, который обеспечивает получение качественных покрытий l.A known zinc phosphating solution containing zinc dihydrogen phosphate, zinc nitrate, sodium fluoride and phosphoric acid, which provides quality coatings l.

Такой раствор позвол ет также фос фатировать и черные металлы.Such a solution also allows phosphate to ferrous metals.

Целью изобретени   вл етс  обеспечение избирательного осаждени  фосфатной пленки при обработке комбинированной сталь-цинкповерхности за счет предотвращени  взаимодействи  раствора со сталью.The aim of the invention is to provide a selective precipitation of a phosphate film during the processing of the steel-zinc-surfaced combination by preventing the solution from interacting with the steel.

Это достигаетс  тем, что раствор дополнительно содержит йодид натри  или кали  При следующем соотношении компонентов, г/л:This is achieved in that the solution additionally contains sodium or potassium iodide. In the following ratio of components, g / l:

Дигидрофосфат цинка 40-60 Нитрат цинка30-60Zinc dihydrophosphate 40-60 Zinc nitrate 30-60

Фторид натри 1-3Sodium fluoride 1-3

Фосфорна  кислота6-7Phosphoric acid6-7

Йодид натри  или кали  5-40 Избирательное фосфатирование цинка обеспечиваетс  за счет различной адсорбции йодита натри  или кали Sodium or potassium iodide 5-40 Selective phosphating of zinc is provided by varying the adsorption of sodium or potassium iodite.

на цинке и черном металле. Пленка адсорбированного йодида прочно удерживаетс  на черном металле и подавл ет его взаимодействием с раствором. На цинке прочность адсорбции йодида весьма мала и не вли ет на его фосфатирование .on zinc and black metal. The film of adsorbed iodide is firmly held on the black metal and is suppressed by its interaction with the solution. On zinc, the strength of iodide adsorption is very low and does not affect its phosphating.

При фосфатировании комбинированной сталь-цинк поверхности в растворе без добавки йодида щелочного металла в нем быстро повышаетс  концентраци  ионов железа, присутствие которых даже в незначительных количествах (40 мг/л) приводит к резкому ухудшению качества покрытий - его коррозионной стойкости и внешнего вида.When phosphating the steel-zinc surface combined in a solution without the addition of alkali metal iodide, the concentration of iron ions in the solution quickly increases, the presence of which even in small quantities (40 mg / l) leads to a sharp deterioration in the quality of coatings - its corrosion resistance and appearance.

йодид .щелочного металла, адсорбиру сь на поверхности стали, преп тствует увеличению концентрации ионов железа в растворе, что обеспечивает получение на цинке покрыти  лучшего качества и повышает стабильность раствора при многократном его использоваНИИ ,An alkali metal iodide adsorbing on the surface of the steel prevents the increase in the concentration of iron ions in the solution, which provides the zinc with a better quality coating and increases the stability of the solution when it is used several times,

Выбор нижнего предела концентрации йодида кали  или натри  (5 г/л) определ етс  тем, что при более низкой концентрации адсорбци  йодида на стали невысока, в результате чего идетThe choice of the lower limit of the concentration of potassium or sodium iodide (5 g / l) is determined by the fact that at a lower concentration the iodide adsorption on the steel is low, resulting in

фосфатирование черного метгшла и накопление в растворе ионов железа до значений 40 мг/л. Верхний предел содержани  йодида обоснован тем, что при концентрации 40 г/л заметного улучшени  качества покрыти  не происходит ,black metal phosphating and accumulation of iron ions in the solution to 40 mg / l. The upper limit of iodide content is based on the fact that at a concentration of 40 g / l there is no noticeable improvement in the quality of the coating,

. Испытани  раствора осуществл ют следующим образом.. The test solution is carried out as follows.

Фосфатирование провод т в стекл нных  чейках емкостью 0,5 л. Температура раствора поддерживаетс  в пределах 40 1 1°с с помощью термостата. Фосфатированию подвергают оцинкованные образцы из тали марки ст. 3 площадью О,2 дм .Phosphating is carried out in 0.5 liter glass cells. The temperature of the solution is maintained within 40-1 1 ° C using a thermostat. Galvanized specimens from the hoist of the brand Art. 3 area of 2 dm.

Оцинкованные образцы обрабатывают абразивом, промывают в воде и погружают совместно с образцами из стали ст. 3 той же площади в раствор, со ,держащий добавку йодида кали  или натри , при рН раствора 2,3. Состав раствора фосфатировани , г/л: дигидрофосфат цинка 50, нитрат цинка 40, фторид натри  2, йодид кали  или натри  5-40, фосфорна  кислота 6.Galvanized samples are treated with an abrasive, washed in water and immersed together with samples of steel Art. 3 of the same area into the solution, with, holding an additive of potassium or sodium iodide, at a pH of 2.3. The composition of the phosphating solution, g / l: zinc dihydrogen phosphate 50, zinc nitrate 40, sodium fluoride 2, potassium or sodium iodide 5-40, phosphoric acid 6.

Результаты сравнительных испытаний представлены в таблице (проба Акимова на сплошность покрыти  - 150-180с)The results of the comparative tests are presented in the table (test Akimov on the integrity of the coating - 150-180s)

Испытани  показывают, что при совместном фосфатировании оцинкованных и стальных образцов предлагаемым раствором возможно избирательное осаждение фосфата на цинке. При введении в раствор фосфатировани  йодида кали  или натри  концентраци  железа в растворе не превышает допустимых пределов (40 мг/л), что обеспечивает получение покрытий высокого качества .Tests show that in the joint phosphating of galvanized and steel samples with the proposed solution, it is possible to selectively precipitate phosphate on zinc. When potassium iodide or sodium is introduced into the phosphate solution, the concentration of iron in the solution does not exceed the permissible limits (40 mg / l), which provides for obtaining high-quality coatings.

Таким образом, введение в раствор добавки йодида кали  или натри  предотвращает накопление в растворе ионов.железа, стабилизиру  тем самым состав раствора и повыша  срок службы его, обеспечивает избирательное нанесение фосфатных покрытий на цинке и улучшает качество покрыти .Thus, the addition of potassium or sodium iodide to the solution prevents the accumulation of iron ions in the solution, thereby stabilizing the composition of the solution and increasing its service life, provides selective deposition of phosphate coatings on zinc and improves the quality of the coating.

Claims (1)

Формула изобретени Invention Formula Раствор дл  фосфатировани  цинка, содержащий дигидрофосфат цинка, нитрат цинка, фторид натри  и фосфорную кислоту, отличающийс  тем, что, с целью обеспечени  избирательного осаждени  фосфатной пленки при обработке комбинированной стальцинк поверхности за счет предотвращени  взаимодействи  раствора со сталью, он дополнительно содержит йодид натри  или кали  при следующем соотношении компонентов, г/л:A zinc phosphating solution containing zinc dihydrogen phosphate, zinc nitrate, sodium fluoride and phosphoric acid, characterized in that, in order to ensure the selective deposition of the phosphate film when processing the combined steel-zinc surface by preventing the solution from interacting with steel, it additionally contains sodium or potassium iodide in the following ratio of components, g / l: Дигидрофосфат цинка Нитрат цинка Фторид натри  Фосфорна  кислота . Йодид натри  или каZinc dihydrogen phosphate Zinc nitrate Sodium fluoride Phosphoric acid. Sodium iodide or ka Источники информации, прин тые во внимание при экспертизеSources of information taken into account in the examination 1„ Хаин И. И, Теори  и практика фосфатировани  металлов. Л., Хи1973 , с. 282.1 I. Khain I., Theory and Practice of Metal Phosphatization. L., Khi1973, p. 282. ми  mi
SU772463368A 1977-03-16 1977-03-16 Zing parkerizing solution SU639964A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103397324A (en) * 2013-08-07 2013-11-20 彭万焜 Multifunctional phosphating solution, and preparation method and application thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103397324A (en) * 2013-08-07 2013-11-20 彭万焜 Multifunctional phosphating solution, and preparation method and application thereof
CN103397324B (en) * 2013-08-07 2016-04-13 彭万焜 A kind of multifunction phosphide liquid and its production and use

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