SU827613A1 - Method of zinc surface passivation - Google Patents
Method of zinc surface passivation Download PDFInfo
- Publication number
- SU827613A1 SU827613A1 SU782614006A SU2614006A SU827613A1 SU 827613 A1 SU827613 A1 SU 827613A1 SU 782614006 A SU782614006 A SU 782614006A SU 2614006 A SU2614006 A SU 2614006A SU 827613 A1 SU827613 A1 SU 827613A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- zinc surface
- zinc
- surface passivation
- passivation
- aqueous solution
- Prior art date
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- Other Surface Treatments For Metallic Materials (AREA)
Description
соб) и молибдатиой пленкой после обработки в 3%-ном растворе хлористого патри (NaCl) (сразу после пассивировани и через 24 часа испытаний путем периодического погружени в 3%-пый раствор NaCl). Испытани показывают, что э.чектрохиыическа активность цинкового покрыти после дополнптельной обработки уменьшаетс в разпой степени. Потенциал пипкового покрыти , обработа ппого электрохимически в молпбдатных растворах на 50-80 мВ положительиее потенциала непассивированного цинкового покрыти , а потепциал цинкового покрыти , обработанного в щелочном растворе , на мВ положительнее по1енциала необработанного цинка, т. е. электрохимическа обработка в молибдатном растворе в большей степени снижаег элект юхимическую активность цинкового покрыти , через 24 часа испытаний разнида между потенциалами пасеивироваппого и оксидироБанпого цинка составл ет 33- 55 мВ. Изобретение может быть проиллюстрировано несколькими примерами, 1;)едставленными в таблице. Как видно из таблицы, изобретение позвол ет значительно повысить коррозионную стойкость HOBepXHOCTil ИС сравнению с известными способа.пг К)о.ме того, из(к )ретеиие нозв(;л ет использовать операцию пacclIвиp(Jвaни li едином технологическом процессе нанесени цинкового покрьгги . Ф о р м у .1 а и 3 о б р е т е и и Способ пассивировани цииковой по1 ерхности , включающий обработку в в(;лном )аство)е )емен1 ым током нромын ленной частоты при плотности тока 30 А/дм2 и температуре 35-60°(, от л п ч а ю nui и с тем, что, с целью новышении 1хОрр(;зионной с гийкости. Г1ассив11)ойание ведут в водном растворе. содержап1е , ()л ибдат а м м о н и Х.юрнд аммони 11сгочники информаци|, прин тые во виимание при экспертизе . Якименко Г. Я. н др. Молибдатныс ок|1ашенные пленки на цинке и их защитные С1юйства, «Защита мета.Кюв, 1977, т. 13. .YO 1, с. 123. 2. .Лвторское свидетельстви СССР 1 639970, кл. С 25 D 11/34, 1977.comp.) and molybdate film after treatment in a 3% solution of patriotine chloride (NaCl) (immediately after passivation and after 24 hours of testing by periodically immersion in a 3% solution of NaCl). Tests show that the electrochemical activity of the zinc coating after additional processing is reduced to a degree. The potential of the piping coating, by treatment of electrochemically in molpdat solutions at 50–80 mV, is positive for the potential of the non-passivated zinc coating, and the strength of the zinc coating, treated in alkaline solution, per mV, is more positive than the potential of the raw zinc, i.e., the electrochemical treatment in molybdenum is imitated with zinc coating. After decreasing the electrochemical activity of the zinc coating, after 24 hours of testing, the difference between the potentials of the potency and the hydroxy zinc is 33-55 mV. The invention can be illustrated by several examples, 1;) shown in the table. As can be seen from the table, the invention significantly improves the corrosion resistance of the HOBepXHOCTil IP compared with the known methods. KG To) In addition, from (k) reiteration (; it is appropriate to use the operation of virusIv (In-line or a single process for applying zinc coating). Fo rum y. 1 a and 3 o n b ete e i Method of passivating the surface, including processing in (;) the current) e) with a current of the unslined frequency at a current density of 30 A / dm2 and a temperature of 35-60 ° (, from l p h a y nui and with the fact that, for the purpose of an increase of 1хОрр (; zionnaya with giosk. G1ac Siv11) is carried out in an aqueous solution containing, () l ibdat a mnon and H. Urnd ammonium 11 slugs information, taken under examination at the examination. Yakimenko G. Ya. n. molybdatnys ok | tshennye films on zinc and their protective actions, “Protection of a metaclass. Cuv, 1977, vol. 13. .YO 1, p. 123. 2.. Official certificate of the USSR, 1 639970, c. 25 D 11/34, 1977.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782614006A SU827613A1 (en) | 1978-05-04 | 1978-05-04 | Method of zinc surface passivation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782614006A SU827613A1 (en) | 1978-05-04 | 1978-05-04 | Method of zinc surface passivation |
Publications (1)
Publication Number | Publication Date |
---|---|
SU827613A1 true SU827613A1 (en) | 1981-05-07 |
Family
ID=20763910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU782614006A SU827613A1 (en) | 1978-05-04 | 1978-05-04 | Method of zinc surface passivation |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU827613A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004108407A1 (en) * | 2003-06-05 | 2004-12-16 | Metal Coatings International Inc. | Compositions and methods for darkening and imparting corrosion-resistant properties to zinc or other active metals |
-
1978
- 1978-05-04 SU SU782614006A patent/SU827613A1/en active
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004108407A1 (en) * | 2003-06-05 | 2004-12-16 | Metal Coatings International Inc. | Compositions and methods for darkening and imparting corrosion-resistant properties to zinc or other active metals |
EP1633557A1 (en) * | 2003-06-05 | 2006-03-15 | Metal Coatings International Inc. | Compositions and methods for darkening and imparting corrosion-resistant properties to zinc or other active metals |
JP2006526710A (en) * | 2003-06-05 | 2006-11-24 | メタル・コーティングズ・インターナショナル・インコーポレーテッド | Compositions and methods for darkening and imparting corrosion resistance to zinc or other active metals |
EA008802B1 (en) * | 2003-06-05 | 2007-08-31 | Метал Коутингс Интернэшнл Инк. | Compositions and methods for darkening and imparting corrosion-resistant properties to zink or other active metals |
US7641743B2 (en) | 2003-06-05 | 2010-01-05 | Metal Coatings International Inc. | Compositions and methods for darkening and imparting corrosion-resistant properties to zinc or other active metals |
EP1633557A4 (en) * | 2003-06-05 | 2010-08-25 | Metal Coatings Int Inc | Compositions and methods for darkening and imparting corrosion-resistant properties to zinc or other active metals |
CN104532227A (en) * | 2003-06-05 | 2015-04-22 | 金属涂层国际公司 | Compositions and methods for darkening and imparting corrosion-resistant properties to zinc or other active metals |
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