Structural evolution of a porous type-VI sol-gel silica glass
Autor(a) principal: | |
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Data de Publicação: | 1995 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFOP |
Texto Completo: | http://www.repositorio.ufop.br/handle/123456789/2029 |
Resumo: | The structural evolution of type-VI porous sol-gel-derived optical glasses is described. The average pore radius of the glasses studied is 30 ,A, with an exceptionally narrow pore size distribution. These glasses are particularly suited to laser surface densification. Their properties make them also attractive as matrices for impregnation of second phases and as a substrate material for the production of fully dense optical lens elements and micro-optical devices. The properties of the matrices are reported for the as-dried state to densities approaching 2.2 g/cm 3, with thermal treatments from room temperature to 1060°C. The parameters of sintering for the gel-glass transformation are measured, and the phenomena occurring for three temperature ranges are evaluated. An activation energy of 65 + 9 kcal/mol for sintering with a structure factor n = 1.0 + 0.3 was found for the initial stage sintering of the material. |
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Araújo, Fernando Gabriel da SilvaLaTorre, G. P.Hench, L. L.2012-12-14T17:52:36Z2012-12-14T17:52:36Z1995ARAÚJO, F. G. da S.; LaTORRE, G. P.; HENCH, L. L, Structural evolution of a porous type-VI sol-gel silica glass. Journal of Non-Crystalline Solids, v. 185, n. 1, p. 41-48. Disponível em: <https://www.sciencedirect.com/science/article/pii/0022309394006539>. Acesso em: 13 dez. 2012.00223093http://www.repositorio.ufop.br/handle/123456789/2029The structural evolution of type-VI porous sol-gel-derived optical glasses is described. The average pore radius of the glasses studied is 30 ,A, with an exceptionally narrow pore size distribution. These glasses are particularly suited to laser surface densification. Their properties make them also attractive as matrices for impregnation of second phases and as a substrate material for the production of fully dense optical lens elements and micro-optical devices. The properties of the matrices are reported for the as-dried state to densities approaching 2.2 g/cm 3, with thermal treatments from room temperature to 1060°C. The parameters of sintering for the gel-glass transformation are measured, and the phenomena occurring for three temperature ranges are evaluated. An activation energy of 65 + 9 kcal/mol for sintering with a structure factor n = 1.0 + 0.3 was found for the initial stage sintering of the material.Structural evolution of a porous type-VI sol-gel silica glassinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleO periódico Journal of Non-Crystalline Solid concede permissão para depósito do artigo no Repositório Institucional da UFOP. Número da licença: 3306990147256.info:eu-repo/semantics/openAccessengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOPLICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://www.repositorio.ufop.br/bitstream/123456789/2029/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52ORIGINALARTIGO_Structural EvolutionPorous.pdfARTIGO_Structural EvolutionPorous.pdfapplication/pdf660792http://www.repositorio.ufop.br/bitstream/123456789/2029/1/ARTIGO_Structural%20EvolutionPorous.pdfee6258e904d08f87b3ec97da215da74bMD51123456789/20292019-03-15 14:37:33.384oai:localhost: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Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332019-03-15T18:37:33Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false |
dc.title.pt_BR.fl_str_mv |
Structural evolution of a porous type-VI sol-gel silica glass |
title |
Structural evolution of a porous type-VI sol-gel silica glass |
spellingShingle |
Structural evolution of a porous type-VI sol-gel silica glass Araújo, Fernando Gabriel da Silva |
title_short |
Structural evolution of a porous type-VI sol-gel silica glass |
title_full |
Structural evolution of a porous type-VI sol-gel silica glass |
title_fullStr |
Structural evolution of a porous type-VI sol-gel silica glass |
title_full_unstemmed |
Structural evolution of a porous type-VI sol-gel silica glass |
title_sort |
Structural evolution of a porous type-VI sol-gel silica glass |
author |
Araújo, Fernando Gabriel da Silva |
author_facet |
Araújo, Fernando Gabriel da Silva LaTorre, G. P. Hench, L. L. |
author_role |
author |
author2 |
LaTorre, G. P. Hench, L. L. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Araújo, Fernando Gabriel da Silva LaTorre, G. P. Hench, L. L. |
description |
The structural evolution of type-VI porous sol-gel-derived optical glasses is described. The average pore radius of the glasses studied is 30 ,A, with an exceptionally narrow pore size distribution. These glasses are particularly suited to laser surface densification. Their properties make them also attractive as matrices for impregnation of second phases and as a substrate material for the production of fully dense optical lens elements and micro-optical devices. The properties of the matrices are reported for the as-dried state to densities approaching 2.2 g/cm 3, with thermal treatments from room temperature to 1060°C. The parameters of sintering for the gel-glass transformation are measured, and the phenomena occurring for three temperature ranges are evaluated. An activation energy of 65 + 9 kcal/mol for sintering with a structure factor n = 1.0 + 0.3 was found for the initial stage sintering of the material. |
publishDate |
1995 |
dc.date.issued.fl_str_mv |
1995 |
dc.date.accessioned.fl_str_mv |
2012-12-14T17:52:36Z |
dc.date.available.fl_str_mv |
2012-12-14T17:52:36Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
ARAÚJO, F. G. da S.; LaTORRE, G. P.; HENCH, L. L, Structural evolution of a porous type-VI sol-gel silica glass. Journal of Non-Crystalline Solids, v. 185, n. 1, p. 41-48. Disponível em: <https://www.sciencedirect.com/science/article/pii/0022309394006539>. Acesso em: 13 dez. 2012. |
dc.identifier.uri.fl_str_mv |
http://www.repositorio.ufop.br/handle/123456789/2029 |
dc.identifier.issn.none.fl_str_mv |
00223093 |
identifier_str_mv |
ARAÚJO, F. G. da S.; LaTORRE, G. P.; HENCH, L. L, Structural evolution of a porous type-VI sol-gel silica glass. Journal of Non-Crystalline Solids, v. 185, n. 1, p. 41-48. Disponível em: <https://www.sciencedirect.com/science/article/pii/0022309394006539>. Acesso em: 13 dez. 2012. 00223093 |
url |
http://www.repositorio.ufop.br/handle/123456789/2029 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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reponame:Repositório Institucional da UFOP instname:Universidade Federal de Ouro Preto (UFOP) instacron:UFOP |
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UFOP |
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UFOP |
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Repositório Institucional da UFOP |
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Repositório Institucional da UFOP |
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