Co-eletrodeposição oscilatória de cobre e estanho

Química Nova

Edson Joanni¹  Ernesto R. Gonzalez¹  Hamilton Varela¹ 

[1] ,Universidade de São Paulo Instituto de Química de São Carlos São Carlos SP ,Brasil

关键词: oscillations;    electrodeposition;    self-organization;   

DOI  :  10.1590/S0100-40422008000600031

来源: SciELO

【 摘 要 】

It is investigated in the present contribution the oscillatory co-electrodeposition of CuSn on a polycrystalline gold surface in the presence of Triton X-100 surfactant and citric acid as additive, in acidic media. The experiments were conducted under potentiostatic control and the system dynamics characterized in terms of the morphology and stability of the current oscillations. Besides modulations in the frequency and amplitude of the current oscillations, several patterned states were observed, including relaxation-like and mixed mode oscillations. The oscillations were found to be very robust and some time series presented regular motions up to about two hours.

【 授权许可】

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