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Metadados | Descrição | Idioma |
---|---|---|
Autor(es): dc.creator | Vasconcelos, Daniela Cordeiro Leite | - |
Autor(es): dc.creator | Nunes, Eduardo Henrique Martins | - |
Autor(es): dc.creator | Sabioni, Antônio Claret Soares | - |
Autor(es): dc.creator | Vasconcelos, P. M. P. | - |
Autor(es): dc.creator | Vasconcelos, Wander Luiz | - |
Data de aceite: dc.date.accessioned | 2019-11-06T13:32:11Z | - |
Data de disponibilização: dc.date.available | 2019-11-06T13:32:11Z | - |
Data de envio: dc.date.issued | 2015-02-20 | - |
Data de envio: dc.date.issued | 2015-02-20 | - |
Data de envio: dc.date.issued | 2012 | - |
Fonte completa do material: dc.identifier | http://www.repositorio.ufop.br/handle/123456789/4449 | - |
Fonte: dc.identifier.uri | http://educapes.capes.gov.br/handle/capes/557491 | - |
Descrição: dc.description | In this work 316L stainless steel substrates were coated with sol–gel derived films by means of the dip-coating technique. Titanium isopropoxide and ethanol were used as chemical precursor and solvent, respectively. The dip-coating step was performed using withdrawal speeds of 6 mm/min, 30 mm/min, and 60 mm/min. Next, the samples were heat treated in air for 30 min at 100 °C, 300 °C, and 400 °C. The processed composites were examined by FTIR and UV–vis spectroscopies. We observed that thematerials prepared in this work can exhibit a variety of colors depending on the heat treatment temperature, withdrawal speed, and precursor:solvent molar ratio used in their processing. It is an important finding since this behavior could lead to architectural application of these materials. We believe that the changes observed in the UV–vis spectra and the colors of these samples could be related to the variation of the coating thickness as the processing conditions were modified. FTIR tests revealed that the ratio between the intensities of features ascribed to hydroxyl groups and Ti\O bonds decreased as the heat treatment temperature was increased. On the other hand, the ratio between bands related to Ti\O\Ti and Ti\O bonds decreased when the heating temperature was raised from 100 °C to 300 °C. | - |
Idioma: dc.language | en | - |
Direitos: dc.rights | O Periódico Journal of Non-Crystalline Solids concede permissão para depósito do artigo no Repositório Institucional da UFOP. Número da licença: 3566050833470. | - |
Palavras-chave: dc.subject | Sol gel | - |
Palavras-chave: dc.subject | Titanium dioxide | - |
Palavras-chave: dc.subject | FTIR spectroscopy | - |
Título: dc.title | Optical characterization of 316L stainless steel coated with sol–gel titania. | - |
Aparece nas coleções: | Repositório Institucional - UFOP |
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