Electrochemical deposition regimes and critical influence of organic additives on the structure of Bi films

Electrochemical deposition regimes and critical influence of organic additives on the structure of Bi films

The electrodeposition of Bi films from an acid perchlorate electrolyte was examined. The influence of various factors on the process of bismuth electrodeposition was investigated. It was determined that electrolyte mixing, temperature, organic additives exert a noticeable influence on the electrode...

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Bibliographic Details
Published in:Journal of alloys and compounds Vol. 735; pp. 1943 - 1948
Main Authors: Tishkevich, D.I., Grabchikov, S.S., Tsybulskaya, L.S., Shendyukov, V.S., Perevoznikov, S.S., Trukhanov, S.V., Trukhanova, E.L., Trukhanov, A.V., Vinnik, D.A.
Format: Journal Article
Language:English
Published: Lausanne Elsevier B.V 25-02-2018
Elsevier BV
Subjects:
Additives
Bi films
Bismuth
Coated electrodes
Coatings
Coloring
Coloring agents
Diffraction
Diffraction patterns
Electrodeposition
Electrolytes
Ions
Microstructure
Morphology
Organic additives
Reagents
Texture
XRD
Electrodeposition
Bi films
XRD
Microstructure
Organic additives
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Summary:The electrodeposition of Bi films from an acid perchlorate electrolyte was examined. The influence of various factors on the process of bismuth electrodeposition was investigated. It was determined that electrolyte mixing, temperature, organic additives exert a noticeable influence on the electrode process of the discharge of Bi3+ions in acid perchlorate electrolyte. X-ray diffraction patterns for all samples were indexed to rhombohedral Bi. Coatings with a signified texture (012) are formed in electrolyte without additives. This texture is retained by adding into the electrolyte the organic additives such as cresol, resorcinol, synthanol. With coloring agents (acridine yellow and safranin violet), the growth texture changes and the most intense reflex becomes (110). SEM investigations of coatings surface morphology showed that films electrodeposited without additives, as well as with safranin coloring agent, eventually form crystalline films with a block size of tens of microns, but with different texture growth. The additional presence of such organic additives as syntanol and resorcinol in the electrolyte guarantees flat, dense, close grained and uniform coatings with a thickness of 600 μm at room temperature and the highest cathode current density. •Determined optimal parameters for production high quality Bi films.•Established critical influence of organic additives on Bi films structure.•Developed technology for high-speed growth Bi films for practical applications.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2017.11.329