SU508565A1 - Electrolyte for deposition of zinc-based coating - Google Patents

Electrolyte for deposition of zinc-based coating

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Publication number
SU508565A1
SU508565A1 SU2050989A SU2050989A SU508565A1 SU 508565 A1 SU508565 A1 SU 508565A1 SU 2050989 A SU2050989 A SU 2050989A SU 2050989 A SU2050989 A SU 2050989A SU 508565 A1 SU508565 A1 SU 508565A1
Authority
SU
USSR - Soviet Union
Prior art keywords
cobalt
electrolyte
zinc
deposition
coating
Prior art date
Application number
SU2050989A
Other languages
Russian (ru)
Inventor
Анатолий Михайлович Сычев
Анатолий Иванович Епанешников
Нина Андреевна Сенина
Original Assignee
Предприятие П/Я Г-4347
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.)
Filing date
Publication date
Application filed by Предприятие П/Я Г-4347 filed Critical Предприятие П/Я Г-4347
Priority to SU2050989A priority Critical patent/SU508565A1/en
Application granted granted Critical
Publication of SU508565A1 publication Critical patent/SU508565A1/en

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Claims (1)

При использовании резорцина пассиваци  анодов не наблюдаетс  до полной смены электролита, а при его отсутствии пассиваци  происходит за 10 мии. Рассеивающа  способность электролита составл ет 16,5%. Процесс осаждени  рекомендуетс  проводить при рН 1,0-2,0, температуре 18-40°С и катодной плотности тока 2-5 а/дм. Покрыти  толщиной 26-28 мкм, с содержанием 2-8% Со и 92-98% Zn осаждаютс  со скоростью 0,4-0,7 мкм/мин и выходом по току 35-52%. Отражательна  способность покрыти  составл ет 70-90%, микротвердость - 302- 336 кг/мм, внутренние натр жени -197- 256 кг/см удельное электросопротивление - 0,049-0;061 ом мм2/м. Коррозионна  СТОЙКОСТЬ, определенна  в климатической камере типа «Фейтрон при помощи пасты «Корродкот при исходной толщине покрыти  15 мкм составл ет 6- 7лет, Прочность сцеплени  покрытий методом «перегиба - удовлетворительна . Отслаивани  осадков после первого перегиба не наблюдаетс . При испытании на шерегиб до излома отслаивание покрыти  составл ет 23% от длины по линии перегиба. Пример. Осаждение аплава Цинк-кобальт ведут в электролите, содержащем г/л: Окись цинка20,3 Сернокислый кобальт20,5 4 Кислый сернокислый аммоний100 Хлористый натрий15,3 Борна  кислота31 Полиакриламид (20%-ный раствор)60 (мл/л) Резорцин0,6 и -рН 1,65, температуре 25°С и плотности ка 4 а/дм. Отражательна  способность покрыти  Соавл ет 89% (по серебр ному зеркалу), миотвердость - 326 кг/мм. Формула изобретени  Электролит дл  осаждени  покрытий на осве цинка, содержащий окись цинка, кисй сернокислый аммоний, хлористый натй , борную кислоту и Полиакриламид, о т ичающийс  тем, что, с целью устране  пассивации анодов при осаждении сплацинка с кобальтом, он дополнительно соржит резорцин и сернокислый кобальт При едующем соотношении компонентов, т/л: Окись цинка17-23 СерНокислый кобальт15-25 Кислый сернокислый ам80-120 моний Хлористый натрий Борна  кислота Полиакриламид (20%-ный 50-70 (мл/л) раствор 0,3-1,0 РезорцинWhen resorcin is used, passivation of the anodes is not observed until the electrolyte is completely changed, and in its absence, passivation occurs within 10 missions. The scattering power of the electrolyte is 16.5%. The deposition process is recommended to be carried out at a pH of 1.0-2.0, a temperature of 18-40 ° C and a cathode current density of 2-5 A / dm. Coatings 26-28 microns thick, with a content of 2-8% Co and 92-98% Zn are deposited at a rate of 0.4-0.7 µm / min and a current output of 35-52%. The reflectivity of the coating is 70-90%, the microhardness is 302- 336 kg / mm, the internal sodium is 197-256 kg / cm, the specific electrical resistance is 0.049-0; 061 ohm mm2 / m. Corrosion resistance, determined in a climatic chamber of the type "Feytron with the help of a paste" Corrodot with an initial coating thickness of 15 µm is 6-7 years. The adhesion strength of the coatings using the "bending" method is satisfactory. Flaking of precipitation after the first inflection is not observed. When tested to the point of fracture, the flaking of the coating is 23% of the length along the inflection line. Example. The precipitation of aplava Zinc-cobalt is carried out in an electrolyte containing g / l: Zinc oxide 20.3 Cobalt sulfate 20.5 4 Sour ammonium sulphate 100 Sodium chloride 15.3 Boric acid31 Polyacrylamide (20% solution) 60 (ml / l) Resorcinol 0.6 and -pH 1.65, temperature 25 ° C and density ka 4 a / dm. The reflectivity of the coating is 89% (according to the silver mirror), the myhardness is 326 kg / mm. DETAILED DESCRIPTION An electrolyte for deposition of coatings on zinc oxides containing zinc oxide, ammonium sulfate, natrium chloride, boric acid, and polyacrylamide, due to the fact that, in order to eliminate passivation of the anodes during the deposition of splaskinc with cobalt, it will additionally crack it. cobalt With the ratio of the components, t / l: Zinc oxide17-23 Cobalt sulphate15-25 Acidic sulphate am80-120 monium Sodium boric acid polyacrylamide (20% -50-70 (ml / l) solution 0.3-1.0 Resorcin
SU2050989A 1974-08-07 1974-08-07 Electrolyte for deposition of zinc-based coating SU508565A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU2050989A SU508565A1 (en) 1974-08-07 1974-08-07 Electrolyte for deposition of zinc-based coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU2050989A SU508565A1 (en) 1974-08-07 1974-08-07 Electrolyte for deposition of zinc-based coating

Publications (1)

Publication Number Publication Date
SU508565A1 true SU508565A1 (en) 1976-03-30

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507632A1 (en) * 1981-06-16 1982-12-17 Occidental Chem Co GLOSS COMPOSITION FOR ZINC ALLOY ELECTROLYTIC COATING BATHS AND METHOD OF USING SAME
US4439283A (en) * 1982-01-29 1984-03-27 Omi International Corporation Zinc cobalt alloy plating
CN110760906A (en) * 2019-10-29 2020-02-07 中国地质大学(武汉) Nano zinc-cobalt alloy coating based on double-pulse electrodeposition and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507632A1 (en) * 1981-06-16 1982-12-17 Occidental Chem Co GLOSS COMPOSITION FOR ZINC ALLOY ELECTROLYTIC COATING BATHS AND METHOD OF USING SAME
US4425198A (en) 1981-06-16 1984-01-10 Omi International Corporation Brightening composition for zinc alloy electroplating bath and its method of use
US4439283A (en) * 1982-01-29 1984-03-27 Omi International Corporation Zinc cobalt alloy plating
CN110760906A (en) * 2019-10-29 2020-02-07 中国地质大学(武汉) Nano zinc-cobalt alloy coating based on double-pulse electrodeposition and preparation method thereof

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