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Using gibbs standard state free energy and a power regulating device to predict and control the fabrication of nanoporous alumina

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Main Authors: Alaba Oladeji, Araoyinbo, Azmi, Rahmat, Prof., Mohd Nazree, Derman, Dr., Khairel Rafezi, Ahmad, Dr.
Other Authors: aoalaba@yahoo.com
Format: Article
Language:English
Published: VBRI press 2014
Subjects:
Electrochemical cell
Gibbs free energy
Nanoporous alumina
Power regulator
Temperature
Online Access:http://dspace.unimap.edu.my:80/dspace/handle/123456789/32766
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spelling my.unimap-327662014-03-14T09:13:20Z Using gibbs standard state free energy and a power regulating device to predict and control the fabrication of nanoporous alumina Alaba Oladeji, Araoyinbo Azmi, Rahmat, Prof. Mohd Nazree, Derman, Dr. Khairel Rafezi, Ahmad, Dr. aoalaba@yahoo.com azmirahmat@unimap.edu.my nazree@unimap.edu.my rafezi@unimap.edu.my Electrochemical cell Gibbs free energy Nanoporous alumina Power regulator Temperature Link to publisher's homepage at http://www.vbripress.com/ The basic concept of Gibbs standard state free energy predicts a favorable condition for both room and high temperature fabrication of nanoporous alumina in phosphoric acid electrolyte. The anodization of aluminum foil in acidic electrolytes is made possible by the well known process parameters that have been studied over the years. These parameters i.e. voltage, current density, type of electrolyte etc have been very effective when anodizing aluminum at freezing temperatures. When the operating temperature is raised above the freezing temperature, additional process parameters would be required to make the pore formation possible. The fabrication of the aluminum foil was carried out using phosphoric acid as the electrolyte source. The electrolyte pH was adjusted to 1, 3 and 5 in order to simulate different anodizing conditions. A potential of 50 V from a dc power supply was applied across the electrochemical cell, while a power regulating device with different power rating was attached to the electrochemical cell to provide the operating system with additional parameters that could influence the surface structure of the alumina. The micrographs obtained show that the propagation and growth of the pores at both room and high temperatures was made possible by the power regulating device attached to the cell. 2014-03-14T09:13:20Z 2014-03-14T09:13:20Z 2013-12 Article Advanced Materials Letters, vol. 4(12), 2013, pages 899-904 0976-3961 http://amlett.com/volumes/issusenavigation/4/12/December http://dspace.unimap.edu.my:80/dspace/handle/123456789/32766 en VBRI press
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Electrochemical cell
Gibbs free energy
Nanoporous alumina
Power regulator
Temperature
spellingShingle Electrochemical cell
Gibbs free energy
Nanoporous alumina
Power regulator
Temperature
Alaba Oladeji, Araoyinbo
Azmi, Rahmat, Prof.
Mohd Nazree, Derman, Dr.
Khairel Rafezi, Ahmad, Dr.
Using gibbs standard state free energy and a power regulating device to predict and control the fabrication of nanoporous alumina
description Link to publisher's homepage at http://www.vbripress.com/
author2 aoalaba@yahoo.com
author_facet aoalaba@yahoo.com
Alaba Oladeji, Araoyinbo
Azmi, Rahmat, Prof.
Mohd Nazree, Derman, Dr.
Khairel Rafezi, Ahmad, Dr.
format Article
author Alaba Oladeji, Araoyinbo
Azmi, Rahmat, Prof.
Mohd Nazree, Derman, Dr.
Khairel Rafezi, Ahmad, Dr.
author_sort Alaba Oladeji, Araoyinbo
title Using gibbs standard state free energy and a power regulating device to predict and control the fabrication of nanoporous alumina
title_short Using gibbs standard state free energy and a power regulating device to predict and control the fabrication of nanoporous alumina
title_full Using gibbs standard state free energy and a power regulating device to predict and control the fabrication of nanoporous alumina
title_fullStr Using gibbs standard state free energy and a power regulating device to predict and control the fabrication of nanoporous alumina
title_full_unstemmed Using gibbs standard state free energy and a power regulating device to predict and control the fabrication of nanoporous alumina
title_sort using gibbs standard state free energy and a power regulating device to predict and control the fabrication of nanoporous alumina
publisher VBRI press
publishDate 2014
url http://dspace.unimap.edu.my:80/dspace/handle/123456789/32766
_version_ 1643796979166216192
score 13.214268

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