Abnormal polarization change in anodic dissolution of aluminium at high current densities
Само за регистроване кориснике
1981
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Two types of anodic oxidation of aluminum have been recognized in the past: a) oxidation requiring a steady increase of voltage drop across the interface up to a few hundred volts in order to overcome the resistance of increasingly thick compact oxide layer and maintain a steady oxidation current, and b) a porous oxide layer forming oxidation resulting in layers of significant thickness, rather regular structure and with good adsorbing qualities (representing the basis of decorative anodization processes). The third type of oxidation is recognized, following seemingly normal anodic dissolution kinetics. This type of dissolution has been obtained in chloride, chlorate, and perchlorate solution and in some other electrolytes. In this third type, it has been found recently, however, that a careful elimination of pseudo-ohmic overpotential leads to an unusual type of polarization behavior, whereby after reaching some current density range, the polarization of the aluminum-electrolyte inter...face alone, decreases with increasing current density in an approximately linear. It is the purpose of this short communication to report in more detail about this phenomenon which is tantamount to the appearance of negative equivalent resistance at the surface.
Кључне речи:
polarization / aluminium / Electrochemical deposition / anodic oxidation / dissolution kinetics / aluminum-electrolyte interfaceИзвор:
Electrochimica Acta, 1981, 26, 1, 173-177Издавач:
- Elsevier
Институција/група
IHTMTY - JOUR AU - Despić, Aleksandar AU - Dražić, Dragutin M. AU - Zečević, Strahinja K. AU - Atanasoski, Radoslav PY - 1981 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/4414 AB - Two types of anodic oxidation of aluminum have been recognized in the past: a) oxidation requiring a steady increase of voltage drop across the interface up to a few hundred volts in order to overcome the resistance of increasingly thick compact oxide layer and maintain a steady oxidation current, and b) a porous oxide layer forming oxidation resulting in layers of significant thickness, rather regular structure and with good adsorbing qualities (representing the basis of decorative anodization processes). The third type of oxidation is recognized, following seemingly normal anodic dissolution kinetics. This type of dissolution has been obtained in chloride, chlorate, and perchlorate solution and in some other electrolytes. In this third type, it has been found recently, however, that a careful elimination of pseudo-ohmic overpotential leads to an unusual type of polarization behavior, whereby after reaching some current density range, the polarization of the aluminum-electrolyte interface alone, decreases with increasing current density in an approximately linear. It is the purpose of this short communication to report in more detail about this phenomenon which is tantamount to the appearance of negative equivalent resistance at the surface. PB - Elsevier T2 - Electrochimica Acta T1 - Abnormal polarization change in anodic dissolution of aluminium at high current densities VL - 26 IS - 1 SP - 173 EP - 177 DO - 10.1016/0013-4686(81)80021-7 ER -
@article{ author = "Despić, Aleksandar and Dražić, Dragutin M. and Zečević, Strahinja K. and Atanasoski, Radoslav", year = "1981", abstract = "Two types of anodic oxidation of aluminum have been recognized in the past: a) oxidation requiring a steady increase of voltage drop across the interface up to a few hundred volts in order to overcome the resistance of increasingly thick compact oxide layer and maintain a steady oxidation current, and b) a porous oxide layer forming oxidation resulting in layers of significant thickness, rather regular structure and with good adsorbing qualities (representing the basis of decorative anodization processes). The third type of oxidation is recognized, following seemingly normal anodic dissolution kinetics. This type of dissolution has been obtained in chloride, chlorate, and perchlorate solution and in some other electrolytes. In this third type, it has been found recently, however, that a careful elimination of pseudo-ohmic overpotential leads to an unusual type of polarization behavior, whereby after reaching some current density range, the polarization of the aluminum-electrolyte interface alone, decreases with increasing current density in an approximately linear. It is the purpose of this short communication to report in more detail about this phenomenon which is tantamount to the appearance of negative equivalent resistance at the surface.", publisher = "Elsevier", journal = "Electrochimica Acta", title = "Abnormal polarization change in anodic dissolution of aluminium at high current densities", volume = "26", number = "1", pages = "173-177", doi = "10.1016/0013-4686(81)80021-7" }
Despić, A., Dražić, D. M., Zečević, S. K.,& Atanasoski, R.. (1981). Abnormal polarization change in anodic dissolution of aluminium at high current densities. in Electrochimica Acta Elsevier., 26(1), 173-177. https://doi.org/10.1016/0013-4686(81)80021-7
Despić A, Dražić DM, Zečević SK, Atanasoski R. Abnormal polarization change in anodic dissolution of aluminium at high current densities. in Electrochimica Acta. 1981;26(1):173-177. doi:10.1016/0013-4686(81)80021-7 .
Despić, Aleksandar, Dražić, Dragutin M., Zečević, Strahinja K., Atanasoski, Radoslav, "Abnormal polarization change in anodic dissolution of aluminium at high current densities" in Electrochimica Acta, 26, no. 1 (1981):173-177, https://doi.org/10.1016/0013-4686(81)80021-7 . .