Current oscillations in potentiostatic electro-oxidation of aluminum in phosphoric and sulfuric acids

Dewayne T. Bowlin; Alexander Scheeline; Arne J. Pearlstein

doi:10.1016/S0013-4686(97)00059-5

Current oscillations in potentiostatic electro-oxidation of aluminum in phosphoric and sulfuric acids

Dewayne T. Bowlin, Alexander Scheeline, Arne J. Pearlstein

Mechanical Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Potentiostatic current oscillations occur in electro-oxidation of aluminum alloy 2024 by ammonium peroxydisulfate in phosphoric acid, for which we find nearly periodic behavior at 60°C, and cyclic bursting at 68°C. We also show that potentiostatic current oscillations occur in electro-oxidation of the same alloy by sodium dichromate in sulfuric acid. The results are discussed in terms of the separate roles of the oxidant and acid in oxidation of the alloy and dissolution of the film, respectively, and the apparent requirement that oscillatory electro-oxidation of aluminum requires a balance between oxidant strength and acid strength.

Original language	English (US)
Pages (from-to)	417-421
Number of pages	5
Journal	Electrochimica Acta
Volume	43
Issue number	3-4
DOIs	https://doi.org/10.1016/S0013-4686(97)00059-5
State	Published - 1998

Keywords

A1 2024
Aluminum electro-oxidation
Ammonium peroxydisulfate
Anodic films
Electrochemical oscillations

ASJC Scopus subject areas

General Chemical Engineering
Electrochemistry

Online availability

10.1016/S0013-4686(97)00059-5

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title = "Current oscillations in potentiostatic electro-oxidation of aluminum in phosphoric and sulfuric acids",

abstract = "Potentiostatic current oscillations occur in electro-oxidation of aluminum alloy 2024 by ammonium peroxydisulfate in phosphoric acid, for which we find nearly periodic behavior at 60°C, and cyclic bursting at 68°C. We also show that potentiostatic current oscillations occur in electro-oxidation of the same alloy by sodium dichromate in sulfuric acid. The results are discussed in terms of the separate roles of the oxidant and acid in oxidation of the alloy and dissolution of the film, respectively, and the apparent requirement that oscillatory electro-oxidation of aluminum requires a balance between oxidant strength and acid strength.",

keywords = "A1 2024, Aluminum electro-oxidation, Ammonium peroxydisulfate, Anodic films, Electrochemical oscillations",

author = "Bowlin, {Dewayne T.} and Alexander Scheeline and Pearlstein, {Arne J.}",

note = "Funding Information: This work was supportedi n part by NSF Grant CHE-9307549T. he authorsa cknowledged iscussions with and assistancef rom Jim Day regarding the abasing experimentsS. upport of this work by the United States Departmento f Energy, Grant DE-FG02-96ER45607i s gratefullya cknowledged.",

year = "1998",

doi = "10.1016/S0013-4686(97)00059-5",

language = "English (US)",

volume = "43",

pages = "417--421",

journal = "Electrochimica Acta",

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number = "3-4",

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TY - JOUR

T1 - Current oscillations in potentiostatic electro-oxidation of aluminum in phosphoric and sulfuric acids

AU - Bowlin, Dewayne T.

AU - Scheeline, Alexander

AU - Pearlstein, Arne J.

N1 - Funding Information: This work was supportedi n part by NSF Grant CHE-9307549T. he authorsa cknowledged iscussions with and assistancef rom Jim Day regarding the abasing experimentsS. upport of this work by the United States Departmento f Energy, Grant DE-FG02-96ER45607i s gratefullya cknowledged.

PY - 1998

Y1 - 1998

N2 - Potentiostatic current oscillations occur in electro-oxidation of aluminum alloy 2024 by ammonium peroxydisulfate in phosphoric acid, for which we find nearly periodic behavior at 60°C, and cyclic bursting at 68°C. We also show that potentiostatic current oscillations occur in electro-oxidation of the same alloy by sodium dichromate in sulfuric acid. The results are discussed in terms of the separate roles of the oxidant and acid in oxidation of the alloy and dissolution of the film, respectively, and the apparent requirement that oscillatory electro-oxidation of aluminum requires a balance between oxidant strength and acid strength.

AB - Potentiostatic current oscillations occur in electro-oxidation of aluminum alloy 2024 by ammonium peroxydisulfate in phosphoric acid, for which we find nearly periodic behavior at 60°C, and cyclic bursting at 68°C. We also show that potentiostatic current oscillations occur in electro-oxidation of the same alloy by sodium dichromate in sulfuric acid. The results are discussed in terms of the separate roles of the oxidant and acid in oxidation of the alloy and dissolution of the film, respectively, and the apparent requirement that oscillatory electro-oxidation of aluminum requires a balance between oxidant strength and acid strength.

KW - A1 2024

KW - Aluminum electro-oxidation

KW - Ammonium peroxydisulfate

KW - Anodic films

KW - Electrochemical oscillations

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U2 - 10.1016/S0013-4686(97)00059-5

DO - 10.1016/S0013-4686(97)00059-5

M3 - Article

AN - SCOPUS:0032308458

SN - 0013-4686

VL - 43

SP - 417

EP - 421

JO - Electrochimica Acta

JF - Electrochimica Acta

IS - 3-4

ER -

Current oscillations in potentiostatic electro-oxidation of aluminum in phosphoric and sulfuric acids

Abstract

Keywords

ASJC Scopus subject areas

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