Influence of H2C204 solution on formation of Porous AAO thin film

The anodizing of aluminium has been investigated with the aim to realize nano-porous structures and nano-porous oxides for use as nano-templates. Before undergoing electrochemical oxidation, aluminium samples were cleaned in acetone, annealed at 450ºC under nitrogen flow. Then the Al sheets underg...

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Main Author: Puteri Normiyani Abu Hassan
Other Authors: Norsuria Mahmed (Advisor)
Format: Learning Object
Language:English
Published: Universiti Malaysia Perlis 2008
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Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/3309
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spelling my.unimap-33092008-11-24T07:29:28Z Influence of H2C204 solution on formation of Porous AAO thin film Puteri Normiyani Abu Hassan Norsuria Mahmed (Advisor) Porous materials Aluminium Thin films Aluminum oxide Anodic aluminium oxide Oxalic acid The anodizing of aluminium has been investigated with the aim to realize nano-porous structures and nano-porous oxides for use as nano-templates. Before undergoing electrochemical oxidation, aluminium samples were cleaned in acetone, annealed at 450ºC under nitrogen flow. Then the Al sheets undergo alkaline etching in NaOH at 50 ºC to 60ºC and dipped in HNO3 at room temperature. Anodizing was carried out using oxalic acid, H2C2O4 as electrolyte. Different combinations of processing parameters (anodization time, electrolyte concentration, and current density) were used in order to optimize the process. The phase analysis of the samples was analyzed by X-Ray Diffraction (XRD) and the porous surface was observed by Scanning Electron Microscopy (SEM). The results show that at lower current density and short anodizing time, no pores were formed in each different electrolyte concentration. However, increasing the anodizing time to 2 hours produced smaller, rounded pores. But at short anodizing time with higher current density produced bigger pores. The pores formed were not uniformly distributed. Further investigations are required to optimise the production of highly self-ordered porous structures. By optimizing all of these experimental conditions, we were able to obtain porous anodic aluminum oxide layers displaying ordered domains several hundreds of nanometers in length. 2008-11-24T07:29:28Z 2008-11-24T07:29:28Z 2008-04 Learning Object http://hdl.handle.net/123456789/3309 en Universiti Malaysia Perlis School of Material Engineering
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 Porous materials
Aluminium
Thin films
Aluminum oxide
Anodic aluminium oxide
Oxalic acid
spellingShingle Porous materials
Aluminium
Thin films
Aluminum oxide
Anodic aluminium oxide
Oxalic acid
Puteri Normiyani Abu Hassan
Influence of H2C204 solution on formation of Porous AAO thin film
description The anodizing of aluminium has been investigated with the aim to realize nano-porous structures and nano-porous oxides for use as nano-templates. Before undergoing electrochemical oxidation, aluminium samples were cleaned in acetone, annealed at 450ºC under nitrogen flow. Then the Al sheets undergo alkaline etching in NaOH at 50 ºC to 60ºC and dipped in HNO3 at room temperature. Anodizing was carried out using oxalic acid, H2C2O4 as electrolyte. Different combinations of processing parameters (anodization time, electrolyte concentration, and current density) were used in order to optimize the process. The phase analysis of the samples was analyzed by X-Ray Diffraction (XRD) and the porous surface was observed by Scanning Electron Microscopy (SEM). The results show that at lower current density and short anodizing time, no pores were formed in each different electrolyte concentration. However, increasing the anodizing time to 2 hours produced smaller, rounded pores. But at short anodizing time with higher current density produced bigger pores. The pores formed were not uniformly distributed. Further investigations are required to optimise the production of highly self-ordered porous structures. By optimizing all of these experimental conditions, we were able to obtain porous anodic aluminum oxide layers displaying ordered domains several hundreds of nanometers in length.
author2 Norsuria Mahmed (Advisor)
author_facet Norsuria Mahmed (Advisor)
Puteri Normiyani Abu Hassan
format Learning Object
author Puteri Normiyani Abu Hassan
author_sort Puteri Normiyani Abu Hassan
title Influence of H2C204 solution on formation of Porous AAO thin film
title_short Influence of H2C204 solution on formation of Porous AAO thin film
title_full Influence of H2C204 solution on formation of Porous AAO thin film
title_fullStr Influence of H2C204 solution on formation of Porous AAO thin film
title_full_unstemmed Influence of H2C204 solution on formation of Porous AAO thin film
title_sort influence of h2c204 solution on formation of porous aao thin film
publisher Universiti Malaysia Perlis
publishDate 2008
url http://dspace.unimap.edu.my/xmlui/handle/123456789/3309
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score 13.222552