SU645992A1 - Electrolyte for depositing platinum-nickel alloy coatings - Google Patents

Electrolyte for depositing platinum-nickel alloy coatings

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Publication number
SU645992A1
SU645992A1 SU762359206A SU2359206A SU645992A1 SU 645992 A1 SU645992 A1 SU 645992A1 SU 762359206 A SU762359206 A SU 762359206A SU 2359206 A SU2359206 A SU 2359206A SU 645992 A1 SU645992 A1 SU 645992A1
Authority
SU
USSR - Soviet Union
Prior art keywords
electrolyte
platinum
nickel alloy
alloy
nickel
Prior art date
Application number
SU762359206A
Other languages
Russian (ru)
Inventor
Георгий Антонович Корчинский
Владимир Григорьевич Заика
Original Assignee
Винницкий политехнический институт
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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Publication date
Application filed by Винницкий политехнический институт filed Critical Винницкий политехнический институт
Priority to SU762359206A priority Critical patent/SU645992A1/en
Application granted granted Critical
Publication of SU645992A1 publication Critical patent/SU645992A1/en

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Description

Изобретение относитс  к гальваностегии , в частности к электролитическому осаждению сплава платина-никель . Известен электролит дл  нанесени  покрытий сплавом платина-никель, содержащий соединени  платины (хлорид платины), никел  и аммони  (фосфат аммони ) l . Однако каталитическа  активность в реакци х окислени  метанола сплава полученного в известном электролите,  вл етс  недостаточной - 1.10 А/см С целью повышени  каталитической активности покрыти  в качестве соединений платины, никел  и аммони  предлагаемый электролит содержит соответственно динитродиамин платины, сернокислый никель и сернокислый аммоний при следующем соотношении комп нентов, г/л: Динитродиамин платины 2,5-20 Сернокислый никель 2,5-20 Сернокислый аммоний 35-40 рроцесс осаждени  рекомендуют про водить при рН 9-10,5, температуре 40-80 С и плотности тока 50200 мА/см. Электролит готов т следующим образом . В дистиллированной воде рхаствор ют сернокислый аммоний, затем в раствор ввод т рассчитанное количество сернокислого никел  и добавл ют гидроокись аммони  до ,5. После этого раствор нагревают до 40-80 С и при перемешивании добавл ют необходимое количество динитродиамина платины. Сульфат аммони  ввод т в электролит дл  обеспечени  высокой электропроводности , оказани  буферного действи  в прикатодном слое. Было исследовано вли ние условий электролиза на состав и выход по току сплава и установлено, что увеличение концентрации сернокислО1-о никел  в электролите приводит к уменьшению содержани  платины в сплаве и увеличению выхода по току, а увеличение температуры приводит к- повышению выхода по току, при этом состав сплава не мен етс , при температуре 90с сильно мен етс  рН электролита. Плотность тока не вли ет на состав сплава и выход по току, однако мен етс  дисперсность сплава. Каталитическа  активность сплава в реакци х окислени  спиртов зависит от содержани The invention relates to electroplating, in particular to electrolytic deposition of a platinum-nickel alloy. A platinum-nickel alloy electrolyte is known, containing platinum compounds (platinum chloride), nickel, and ammonium (ammonium phosphate) l. However, the catalytic activity in the oxidation reactions of methanol alloy obtained in a known electrolyte is insufficient - 1.10 A / cm. In order to increase the catalytic activity of the coating as platinum, nickel and ammonium compounds, the proposed electrolyte contains platinum dinitrodiamine, nickel sulphate and ammonium sulphate, respectively, with the following the ratio of the components, g / l: Dinitrodiamine platinum 2.5-20 Nickel sulphate 2.5-20 Ammonium sulphate 35-40 It is recommended to carry out the precipitation process at pH 9-10.5, temperature 40 -80 C and current density of 50200 mA / cm. The electrolyte is prepared as follows. Ammonium sulphate is dissolved in distilled water, then the calculated amount of nickel sulphate is introduced into the solution and ammonium hydroxide is added to, 5. After that, the solution is heated to 40-80 ° C and the required amount of dinitrodiamine platinum is added with stirring. Ammonium sulfate is introduced into the electrolyte to provide high electrical conductivity, providing buffering action in the cathode layer. The effect of electrolysis conditions on the composition and current efficiency of the alloy was investigated, and it was found that an increase in the sulfuric acid concentration of nickel in the electrolyte leads to a decrease in the platinum content in the alloy and an increase in the current efficiency, and an increase in temperature leads to an increase in the current efficiency This composition of the alloy does not change; at a temperature of 90s, the pH of the electrolyte varies greatly. The current density does not affect the composition of the alloy and the current efficiency, but the dispersion of the alloy changes. The catalytic activity of the alloy in the oxidation reactions of alcohols depends on the content

платины в сплаве. Наиболее активными  вл ютс  сплавы, содержащие 40-50% никел .platinum in the alloy. The most active are alloys containing 40-50% nickel.

Изобретение иллюстрируетс  несколькими примерами, представленными в таблице.The invention is illustrated by several examples in the table.

SU762359206A 1976-04-14 1976-04-14 Electrolyte for depositing platinum-nickel alloy coatings SU645992A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU762359206A SU645992A1 (en) 1976-04-14 1976-04-14 Electrolyte for depositing platinum-nickel alloy coatings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU762359206A SU645992A1 (en) 1976-04-14 1976-04-14 Electrolyte for depositing platinum-nickel alloy coatings

Publications (1)

Publication Number Publication Date
SU645992A1 true SU645992A1 (en) 1979-02-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU762359206A SU645992A1 (en) 1976-04-14 1976-04-14 Electrolyte for depositing platinum-nickel alloy coatings

Country Status (1)

Country Link
SU (1) SU645992A1 (en)

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