Effect of organic additives on electrodeposition of tin from acid sulfate solution

• Autorzy: Rudnik E. , Chowaniec G.

Identyfikatory

DOI

10.7494/mafe.2018.44.1.41

Warianty tytułu

PL

Wpływ dodatków organicznych na katodowe osadzanie cyny z kwaśnego roztworu siarczanowego

• Języki publikacji: EN

Abstrakty

EN

Basic electrochemical experiments on the kinetics of tin deposition from an acid sulfate solution containing organic additives were performed. The measurements showed that tin deposits with activation polarization in a narrow potential range. Organic additives like gelatin and β-naphtol inhibit the charge transfer stage of the cathodic reaction due to the formation of adsorption layers. In turn, the gluconate ions increase the rate of tin deposition due to the bonding of hydrogen ions and inhibiting hydrogen coevolution. This results in serious changes in the morphology of tin deposits from isolated polyhedron crystals (no additive) via rectangular plates (β-naphtol) and thin plates (sodium gluconate) to rounded grains (gelatin).

PL

Przeprowadzono podstawowe badania elektrochemiczne osadzania cyny z kwaśnego roztworu siarczanowego zawierającego dodatki organiczne. Pomiary wykazały, że cyna wydziela się w zakresie polaryzacji aktywacyjnej w stosunkowo wąskim przedziale potencjałów. Dodatki organiczne jak żelatyna i β-naftol hamują proces przeniesienia ładunku przez granicę faz wskutek tworzenia warstw adsorpcyjnych. Z kolei jony glukonianowe zwiększają szybkość osadzania cyny przez wiązanie jonów wodorowych i hamowanie współwydzielania wodoru. Powoduje to poważne zmiany morfologii osadów katodowych: od wielościennych kryształów cyny (brak dodatków), przez tworzenie prostokątnych ziaren płytkowych (β-naftol) i cienkich płytek (glukonian sodu), do ziaren o zaokrąglonych kształtach (żelatyna).

Słowa kluczowe

EN

electrolysis; gluconate; gelatin; β-naphtol; morphology

PL

elektroliza; glukonian; żelatyna; β-naftol; morfologia

• Wydawca: AGH University of Science and Technology Press
• Czasopismo: Metallurgy and Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 44, no. 1
• Strony: 41--52
• Opis fizyczny: Bibliogr. 32 poz., rys., tab., wykr.

Twórcy

autor

Rudnik E.

• AGH University of Science and Technology, Faculty of Non-Ferrous Metals, Department of Physical Chemistry and Metallurgy of Non-Ferrous Metals, Krakow, Poland

autor

Chowaniec G.

• AGH University of Science and Technology, Faculty of Non-Ferrous Metals, Department of Physical Chemistry and Metallurgy of Non-Ferrous Metals, Krakow, Poland

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).