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ES297533A3 - A procedure for the galvanic deposit of gold, copper and cadmium alloys (Machine-translation by Google Translate, not legally binding) - Google Patents

A procedure for the galvanic deposit of gold, copper and cadmium alloys (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES297533A3
ES297533A3 ES0297533A ES297533A ES297533A3 ES 297533 A3 ES297533 A3 ES 297533A3 ES 0297533 A ES0297533 A ES 0297533A ES 297533 A ES297533 A ES 297533A ES 297533 A3 ES297533 A3 ES 297533A3
Authority
ES
Spain
Prior art keywords
copper
gold
cyanide
cadmium
translation
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
ES0297533A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Deutsche Gold und Silber Scheideanstalt
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 Degussa GmbH, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Priority to ES0297533A priority Critical patent/ES297533A3/en
Publication of ES297533A3 publication Critical patent/ES297533A3/en
Expired legal-status Critical Current

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  • Electroplating And Plating Baths Therefor (AREA)

Abstract

A process for the galvanic deposition of gold-copper-cadmium alloys from cyanuric baths, by means of direct current of periodically inverted polarity, characterized in that a bath consisting of 1 to 3 g/l of gold is used as cyanide of gold and potassium, in 5 to 15, preferably 8 to 13 g/l of copper such as copper and potassium cyanide or copper and sodium cyanide, in 0.1 to 0.8 g/l of cadmium as cadmium and potassium cyanide or cadmium and sodium cyanide and in 3 to 8 g/l of free cyanide, calculated as potassium cyanide, with a pH value of 9 to 11, and operated at a current density of 0.5 to 1, 5 A/dm2 for the duration of the cathode phase from 4 to 20 seconds and with a current density of 0.75 to 3.75 A/dm2, preferably 1.0 to 3.0 A/dm2, for the duration of the anodic phase of 0.5 to 2 seconds. (Machine-translation by Google Translate, not legally binding)
ES0297533A 1964-03-12 1964-03-12 A procedure for the galvanic deposit of gold, copper and cadmium alloys (Machine-translation by Google Translate, not legally binding) Expired ES297533A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES0297533A ES297533A3 (en) 1964-03-12 1964-03-12 A procedure for the galvanic deposit of gold, copper and cadmium alloys (Machine-translation by Google Translate, not legally binding)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES0297533A ES297533A3 (en) 1964-03-12 1964-03-12 A procedure for the galvanic deposit of gold, copper and cadmium alloys (Machine-translation by Google Translate, not legally binding)

Publications (1)

Publication Number Publication Date
ES297533A3 true ES297533A3 (en) 1964-07-01

Family

ID=34498025

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0297533A Expired ES297533A3 (en) 1964-03-12 1964-03-12 A procedure for the galvanic deposit of gold, copper and cadmium alloys (Machine-translation by Google Translate, not legally binding)

Country Status (1)

Country Link
ES (1) ES297533A3 (en)

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