Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/26879
Registo completo
Campo DC | Valor | Idioma |
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dc.contributor.author | Samantilleke, A. P. | - |
dc.contributor.author | Carneiro, Joaquim A. O. | - |
dc.contributor.author | Azevedo, Sofia | - |
dc.contributor.author | Thuy, Tran Thi Thu | - |
dc.contributor.author | Teixeira, Vasco M. P. | - |
dc.date.accessioned | 2013-12-10T15:50:48Z | - |
dc.date.available | 2013-12-10T15:50:48Z | - |
dc.date.issued | 2013-10 | - |
dc.identifier.issn | 1661-9897 | por |
dc.identifier.uri | https://hdl.handle.net/1822/26879 | - |
dc.description.abstract | Highly ordered Anodic Aluminum Oxide (AAO) structures produced from aluminum by using an electrochemical anodizing method were developed towards its application for the next generation of micro/nano medical and energy devices. In addition of analyzing the anodizing current profile, the surface morphology was characterized by using Scanning Electron Microscopy (SEM), the crystalline structure by X-Ray Diffraction (XRD) and the mechanical properties by nanoindentation experiments. The anodizing time and applied potential determines the nanopores regularity and their size, although the effect of the potential is more pronounced than the effect of temperature in the transformation from crystalline alumina to amorphous alumina. Optimum pore growth was achieved with an applied potential of 17 V which led to a pore fraction - P(f) - of about 17.5%. The experimental Berkovich nanoindentation method was used to determine the AAO hardness as a function of the indenter depth, during the loading stage, using mechanical response and deformation behaviour of the nanopores structure. From the experimental data of the loaddisplacement curves, this method allows the calculation of the indenter contact depth at each reloading point, thus leading to the estimation of the material’s hardness. The results reveal that the hardness depends on the processing conditions used for the production of the AAO samples that also strongly influences the organization and pore size uniformity. | por |
dc.description.sponsorship | FCT (Fundação para a Ciência e Tecnologia) for funding through Ciencia 2007 programme and the pluriannual contract with CFUM. | por |
dc.language.iso | eng | por |
dc.publisher | Trans Tech Publications | por |
dc.relation | FP7-PEOPLE-2010-IRSES-NanoCIS (269279) | por |
dc.rights | openAccess | por |
dc.subject | AAO templates | por |
dc.subject | Nanopores | por |
dc.subject | Two-step anodizing process | por |
dc.subject | Nanoindentation | por |
dc.title | Electrochemical anodizing, structural and mechanical characterization of nanoporous alumina templates | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | The original publication is available at http://www.scientific.net/ | por |
sdum.publicationstatus | published | por |
oaire.citationStartPage | 77 | por |
oaire.citationEndPage | 89 | por |
oaire.citationTitle | Journal of nano research | por |
oaire.citationVolume | 25 | por |
dc.identifier.doi | 10.4028/www.scientific.net/JNanoR.25.77 | - |
dc.subject.wos | Science & Technology | por |
sdum.journal | Journal of nano research | por |
Aparece nas coleções: | CDF - CEP - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Structural and Mechanical Characterization of Nanoporous Alumina Templates.pdf | Main Article | 859,71 kB | Adobe PDF | Ver/Abrir |