Topic
Galvanic bath
About: Galvanic bath is a research topic. Over the lifetime, 38 publications have been published within this topic receiving 114 citations.
Papers
Patent•
11 Aug 1981TL;DR: In this paper, a measuring cell within which a sample is introduced from the galvanic bath is used to measure the current efficiency of a galvanic sample, and a negative voltage is applied at constant current during a first predetermined time during precipitating.
Abstract: A method for determining current efficiency in a galvanic bath employs a measuring cell within which a sample is introduced from the galvanic bath. In this sample, onto a preferably rotating electrode metal is precipitated. A negative voltage is applied at constant current during a first predetermined time during the precipitating. Thereafter, the precipitated layer is anodically eroded by use of a suitable electrolyte solution upon pole-reversal of the DC voltage. The current efficiency is then calculated.
22 citations
Patent•
24 Feb 1986
TL;DR: A galvanic bath for the electrolytic deposit of gold-based alloys contains a cyanide complex of gold as discussed by the authors, as well as a depolarizing agent and/or an inorganic or organic brightening agent.
Abstract: A galvanic bath for the electrolytic deposit of gold-based alloys contains a cyanide complex of gold, a cyanide complex of copper, a cyanide complex of cadmium and a cyanide complex of zinc, and at least one complexing agent and one surface-active agent, as well as, if desired, a depolarizing agent and/or an inorganic or organic brightening agent. This bath functions in the presence or in the absence of free cyanide.
16 citations
Patent•
24 Jun 1999
TL;DR: The galvanic bath contains at least one compound which provides chromium ions, in an aqueous solution, and comprises a quantity of chromium (VI) ions corresponding to 100 to 600 g/l chromic acid anhydride, and sulphate ions in the form of sulphuric acid and/or a soluble salt thereof as mentioned in this paper.
Abstract: The invention relates to a galvanic bath, to a method for precipitating chromium onto objects using said galvanic bath, and to the use of this method for producing structured hard chromium layers on machine parts. The galvanic bath contains at least one compound which provides chromium (VI) ions, in an aqueous solution, and comprises a) a quantity of chromium (VI) ions corresponding to 100 to 600 g/l chromic acid anhydride, b) sulphate ions in the form of sulphuric acid and/or a soluble salt thereof, the molar concentration ratio of chromium (VI) ions to sulphate ions (SO42-) being 90:1 to 120:1 and c) a quantity of 2-hydroxyethane sulphonate ions corresponding to 0.01 to 3.0 g/l of the sodium salt.
11 citations
Patent•
1 Jun 2004TL;DR: In this article, a process for filling µ-blind vias in the manufacture of printed circuit boards is described, which process comprises the following steps: (i) providing a bath electrolyte for galvanic plating with metallic coatings comprising a copper metal salt and optionally organic additives, (ii) operating the bath with direct current density of 0.5 to 10 A/dm2, or current pulses at an effective current density between 0.4 to A/DM2, (iii) withdrawing part of the electrolyte from the galvanic bath, adding an oxidizing
Abstract: The invention provides a process for filling µ-blind vias in the manufacture of printed circuit boards, which process comprises the following steps: (i) providing a bath electrolyte for galvanic plating with metallic coatings comprising a copper metal salt and optionally organic additives, (ii) operating the bath with direct current density of 0.5 to 10 A/dm2, or current pulses at an effective current density of 0.5 to A/dm2, (iii) withdrawing part of the electrolyte from the galvanic bath, (iv) adding an oxidizing agent to the part of the electrolyte which has been withdrawn, (v) optionally irradiating the withdrawn electrolyte with UV light and (vi) recycling the withdrawn part to the galvanic bath and replacing the organic additives destroyed by the oxidation treatment.
9 citations
Patent•
12 Aug 1999
TL;DR: The galvanic bath contains at least one compound which provides chromium ions, in an aqueous solution, and comprises a quantity of chromium (VI) ions corresponding to 100 to 600 g/l chromic acid anhydride, and sulphate ions in the form of sulphuric acid and/or a soluble salt thereof.
Abstract: The invention relates to a galvanic bath, to a method for precipitating chromium onto objects using said galvanic bath, and to the use of this method for producing structured hard chromium layers on machine parts. The galvanic bath contains at least one compound which provides chromium (VI) ions, in an aqueous solution, and comprises a) a quantity of chromium (VI) ions corresponding to 100 to 600 g/l chromic acid anhydride, b) sulphate ions in the form of sulphuric acid and/or a soluble salt thereof, the molar concentration ratio of chromium (VI) ions to sulphate ions (SO4 ) being 90:1 to 120:1 and c) a quantity of 2-hydroxyethane sulphonate ions corresponding to 0.01 to 3.0 g/l of the sodium salt.
8 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2020 | 6 |
| 2019 | 1 |
| 2017 | 2 |
| 2016 | 1 |
| 2015 | 1 |
| 2011 | 2 |