SU254293A1 - METHOD OF ELECTROLYTIC DEPOSITION OF PALLADIUM - Google Patents
METHOD OF ELECTROLYTIC DEPOSITION OF PALLADIUMInfo
- Publication number
- SU254293A1 SU254293A1 SU1241969A SU1241969A SU254293A1 SU 254293 A1 SU254293 A1 SU 254293A1 SU 1241969 A SU1241969 A SU 1241969A SU 1241969 A SU1241969 A SU 1241969A SU 254293 A1 SU254293 A1 SU 254293A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- palladium
- electrolytic deposition
- solution
- ammonia
- hydroxide
- Prior art date
Links
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Chemical group [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 title description 21
- 229910052763 palladium Inorganic materials 0.000 title description 10
- 239000000243 solution Substances 0.000 description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxyl anion Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 4
- PRKQVKDSMLBJBJ-UHFFFAOYSA-N Ammonium carbonate Chemical compound N.N.OC(O)=O PRKQVKDSMLBJBJ-UHFFFAOYSA-N 0.000 description 3
- 239000001099 ammonium carbonate Substances 0.000 description 3
- 235000012501 ammonium carbonate Nutrition 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- -1 chlorine ions Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- ZEYWAHILTZGZBH-UHFFFAOYSA-O [NH4+].O=C=O Chemical compound [NH4+].O=C=O ZEYWAHILTZGZBH-UHFFFAOYSA-O 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- NXJCBFBQEVOTOW-UHFFFAOYSA-L palladium(2+);dihydroxide Chemical compound O[Pd]O NXJCBFBQEVOTOW-UHFFFAOYSA-L 0.000 description 1
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Description
Известный способ электролитического осаждени паллади из раствора на основе диамипохлорида паллади и аммиака имеет тот недостаток , что в процессе работы в электролите накапливаютс ионы хлора, которые ухудшают качество покрыти .The known method of electrolytic deposition of palladium from a solution based on diamipochloride palladium and ammonia has the disadvantage that in the course of operation, chlorine ions accumulate in the electrolyte, which degrade the quality of the coating.
По предложенному способу электролитического осаждени паллади дл улучшени качества покрыти и увеличени стабильности электролита в раствор ввод т тетраамингидрооксид паллади и углекислый аммоний при следующем соотношении компонентов, г/л:According to the proposed method of electrolytic deposition of palladium, in order to improve the quality of the coating and increase the stability of the electrolyte, palladium tetraamine hydroxide and ammonium carbonate are introduced into the solution in the following ratio of components, g / l:
Тетраамингидрооксид паллади Tetraamine hydroxide palladium
(в пересчете на металл)10-30(in terms of metal) 10-30
Углекислый аммоний10-20 Аммиак (свободный)3-10Carbon dioxide ammonium 10-20 Ammonia (free) 3-10
и процесс ведут при рН 8-10, температуре 18-25°С, катодной плотности тока 0,5- 2,5 а/дм.and the process is carried out at a pH of 8-10, a temperature of 18-25 ° C, a cathode current density of 0.5-2.5 a / dm.
Катодный выход металла по току ири указанных плотност х тока 98-100%. По внешнему виду покрыти блест щие и полублест щие с низким внутренним напр жением. Мккротвердость покрыти 220-260 кг/мм.The cathode output of the metal by current and the indicated current densities is 98-100%. In appearance, the coatings are shiny and semi-glossy with low internal stress. Microhardness of the coating is 220-260 kg / mm.
Электролит готов т следующим образом.The electrolyte is prepared as follows.
Навеску хлористого паллади раствор ют в разбавленной сол ной кислоте. Затем нри помешивании приливают разбавленный раствор щелочи до значений рН 7,5-8,5, при которых осаждают из раствора гидроокись паллади .A portion of the palladium chloride is dissolved in dilute hydrochloric acid. Then, with stirring, a dilute alkali solution is poured to a pH of 7.5-8.5, at which palladium hydroxide is precipitated from the solution.
Свелхеосажденный осадок гидроокиси паллади отмывают декантацией от ионов хлора, раствор ют в 25%-ном растворе аммиака при 80-100°С до полного растворени осадка и получени раствора желтого цвета. К полученному раствору добавл ют водный раствор углекислого аммони .The precipitated palladium hydroxide precipitate is washed by decantation from chlorine ions, dissolved in a 25% ammonia solution at 80-100 ° C until the precipitate is completely dissolved and a yellow solution is obtained. To the resulting solution was added an aqueous solution of ammonium carbonate.
Предмет изобретени Subject invention
Способ электролитического осаждени паллади из раствора на основе комплексной соли паллади и аммиака, отличающийс тем, что, с целью улучшени качества покрыти и увеличени стабильности электролита, в раствор ввод т Тетраамингидрооксид паллади и углекислый аммоний при следующем соотношении компонентов, в г/л:A method of electrolytic deposition of palladium from a solution based on a complex salt of palladium and ammonia, characterized in that, in order to improve the quality of the coating and increase the stability of the electrolyte, palladium tetraamine hydroxide and ammonium carbonate are introduced into the solution in the following ratio of components in g / l:
Тетраамингидрооксид паллади Tetraamine hydroxide palladium
(в пересчете на металл)10-30(in terms of metal) 10-30
Углекислый аммоний10-20Ammonium carbonate10-20
Аммиак (свободный)3-10Ammonia (free) 3-10
и процесс ведут при рН 8-10, температуре 18-25°С, катодной плотности тока 0.5- 2,5 а/дм.and the process is carried out at a pH of 8-10, a temperature of 18-25 ° C, a cathode current density of 0.5-2.5 a / dm.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU254293A1 true SU254293A1 (en) |
Family
ID=
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4468296A (en) * | 1982-12-10 | 1984-08-28 | At&T Bell Laboratories | Process for electroplating palladium |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4468296A (en) * | 1982-12-10 | 1984-08-28 | At&T Bell Laboratories | Process for electroplating palladium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SU254293A1 (en) | METHOD OF ELECTROLYTIC DEPOSITION OF PALLADIUM | |
| US3793162A (en) | Electrodeposition of ruthenium | |
| US4016051A (en) | Additives for bright plating nickel, cobalt and nickel-cobalt alloys | |
| SU310538A1 (en) | ||
| SU203423A1 (en) | ELECTROCHEMICAL METHOD OF SECURITY IN UNCIANIAN ELECTROLYTES | |
| SU254988A1 (en) | METHOD OF ELECTROLYTIC PALLADING | |
| SU278342A1 (en) | METHOD OF ELECTROLYTIC DEPOSITION OF PALLADIUM — SILVER ALLOY | |
| SU297700A1 (en) | METHOD OF ELECTROLYTIC DEPOSITION OF IRON – ALLOUS ALLOYS – COBALT | |
| SU274602A1 (en) | METHOD OF ELECTROLYTIC DEPOSITION OF A SILVER BASED ALLOY | |
| RU2773296C1 (en) | Method for preparing concentrated rhodium electrolyte | |
| SU1135816A1 (en) | Electrolyte for depositing coatings of alloys of zinc or cadmium with titanium and zirconium | |
| SU293876A1 (en) | METHOD OF ELECTROLYTIC DEPOSITION OF THE ALLOY | |
| SU424909A1 (en) | METHOD OF ELECTROLYTIC PRODUCING OF ALLOYS ON THE BASIS OF COBALT | |
| SU261084A1 (en) | METHOD OF ELECTROLYTIC NICKELING | |
| SU306192A1 (en) | SOLUTION FOR ELECTROCHEMICAL DEPOSITION OF THE PARIUM | |
| SU1413157A1 (en) | Titanium-plating electrolyte | |
| SU377429A1 (en) | PIENTNO'TEHGST | |
| SU282879A1 (en) | METHOD OF ELECTROLYTIC DEPOSITION OF ALLOY - ZINC | |
| SU185169A1 (en) | METHOD OF ELECTROLYTIC NICKELING OF DETAILS | |
| SU857305A1 (en) | Palladium-plating electrolyte | |
| SU255725A1 (en) | METHOD OF PREPARING STEEL SURFACES | |
| SU193879A1 (en) | METHOD OF ELECTROLYTIC DEPOSITION OF THE COPPER-TIN ALLOY | |
| SU445707A1 (en) | Electrochemical production method of tungsten-nickel alloy | |
| SU1705417A1 (en) | Electrolyte for palladium plating | |
| SU209937A1 (en) | METHOD OF ELECTROLYTIC DEPOSITION OF A LEAD-BASED ALLOY |