<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The aim of the study was to find parameters of electrolytic colouring on tin basis to form uniform black coatings on anodized aluminium. A two steps electrolytic process consisting of aluminium anodization in a sulphuric acid electrolyte and colouring in tin acidic electrolyte was used. Among parameters influencing the colouring process, AC colouring voltage, composition of the counter electrode and agitation of the colouring electrolyte were studied. Spectrocolorimetry was applied to analyse the quality of the colouring. Thickness of the coloured and sealed anodized specimens was also evaluated. Optimal parameters for uniform colouring of anodized specimens were found. Unfortunately, colouring electrolyte on tin basis is susceptible to oxidation which negatively influences the colouring.</p></abstract>

The aim of the study was to find parameters of electrolytic colouring on tin basis to form uniform black coatings on anodized aluminium. A two steps electrolytic process consisting of aluminium anodization in a sulphuric acid electrolyte and colouring in tin acidic electrolyte was used. Among parameters influencing the colouring process, AC colouring voltage, composition of the counter electrode and agitation of the colouring electrolyte were studied. Spectrocolorimetry was applied to analyse the quality of the colouring. Thickness of the coloured and sealed anodized specimens was also evaluated. Optimal parameters for uniform colouring of anodized specimens were found. Unfortunately, colouring electrolyte on tin basis is susceptible to oxidation which negatively influences the colouring.

Electrolytic colouring of anodized aluminium on tin basis

Institute of Inorganic Chemistry, Technology and Materials, Faculty of Chemical and Food Technology

Acta Chimica Slovaca

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Electrolytic colouring of anodized aluminium on tin basis"}

The aim of the study was to find parameters of electrolytic colouring on tin basis to form uniform black coatings on anodized aluminium. A two steps...

Electrolytic colouring of anodized aluminium on tin basis

Published Online: Jul 09, 2019

Page range: 8 - 13

DOI: https://doi.org/10.2478/acs-2019-0002

Keywords
aluminium, anodic oxidation, tin based electrolytic colouring, hydrothermal sealing, system

© 2019 Barbora Šopová et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Electrolytic colouring of anodized aluminium on tin basis

Published Online: Jul 09, 2019

Page range: 8 - 13

DOI: https://doi.org/10.2478/acs-2019-0002

Keywordsaluminium, anodic oxidation, tin based electrolytic colouring, hydrothermal sealing, system

© 2019 Barbora Šopová et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
aluminium, anodic oxidation, tin based electrolytic colouring, hydrothermal sealing, system