Desenvolvimento de cerâmicas refratárias engenheiradas densas e porosas
Autor(a) principal: | |
---|---|
Data de Publicação: | 2019 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFSCAR |
Texto Completo: | https://repositorio.ufscar.br/handle/ufscar/12448 |
Resumo: | High temperature processes are of great importance as they are widely applied in the manufacture of commodities, consumer goods and advanced materials. For these processes to be possible, the thermal environment in which they occur must consist of materials with special features, called refractories, for which their structure at different scales, nano to micro, influence directly their thermal and mechanical performance. The development of high-performance advanced refractory ceramics has been using techniques of theoretical modelling of the materials properties in order to correlate these features, making it possible to improve their performance. This trend is based on the use of computational tools, such as numerical simulation, to evaluate the impact of different structural characteristics on the properties of materials. Thus, the main goal of the present thesis was to use different numerical methods in order to assist the microstructure design of refractory materials for structural and thermal insulation applications. The impact of different microstructural descriptors, such as pore size and distribution, was evaluated for the thermal and mechanical properties of thermal insulating ceramic foams. It was observed the existence of an optimum pore size in the 0.5 to 3.0 m, range which reduces the effective thermal conductivity of these materials to a minimum for temperatures above 1000 °C. In the case of structural materials, it was also developed a bioinspired refractory with engineered microstructure presenting high mechanical performance at room (σf = 672.0 MPa and KIC = 7.4 MPa. m1/2) and high temperature (σf = 350.0 MPa and KIC = 6.0 MPa. m1/2), 1200 °C. The development and characterization of this latest material was carried out in conjunction with the Zurich Federal Institute of Technology (ETHz) and Imperial College London. Additionally, thermo-optical simulations were used to evaluate the thermal performance of these structures for a likely application as thermal barriers. |
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Pelissari, Pedro Ivo Batistel Galiote BrossiPandolfelli, Victor Carloshttp://lattes.cnpq.br/7369376873984839http://lattes.cnpq.br/1402623804537094c3c04e20-606f-4955-85f3-b6aca78ced1d2020-04-23T12:30:10Z2020-04-23T12:30:10Z2019-09-04PELISSARI, Pedro Ivo Batistel Galiote Brossi. Desenvolvimento de cerâmicas refratárias engenheiradas densas e porosas. 2019. Tese (Doutorado em Ciência e Engenharia de Materiais) – Universidade Federal de São Carlos, São Carlos, 2019. Disponível em: https://repositorio.ufscar.br/handle/ufscar/12448.https://repositorio.ufscar.br/handle/ufscar/12448High temperature processes are of great importance as they are widely applied in the manufacture of commodities, consumer goods and advanced materials. For these processes to be possible, the thermal environment in which they occur must consist of materials with special features, called refractories, for which their structure at different scales, nano to micro, influence directly their thermal and mechanical performance. The development of high-performance advanced refractory ceramics has been using techniques of theoretical modelling of the materials properties in order to correlate these features, making it possible to improve their performance. This trend is based on the use of computational tools, such as numerical simulation, to evaluate the impact of different structural characteristics on the properties of materials. Thus, the main goal of the present thesis was to use different numerical methods in order to assist the microstructure design of refractory materials for structural and thermal insulation applications. The impact of different microstructural descriptors, such as pore size and distribution, was evaluated for the thermal and mechanical properties of thermal insulating ceramic foams. It was observed the existence of an optimum pore size in the 0.5 to 3.0 m, range which reduces the effective thermal conductivity of these materials to a minimum for temperatures above 1000 °C. In the case of structural materials, it was also developed a bioinspired refractory with engineered microstructure presenting high mechanical performance at room (σf = 672.0 MPa and KIC = 7.4 MPa. m1/2) and high temperature (σf = 350.0 MPa and KIC = 6.0 MPa. m1/2), 1200 °C. The development and characterization of this latest material was carried out in conjunction with the Zurich Federal Institute of Technology (ETHz) and Imperial College London. Additionally, thermo-optical simulations were used to evaluate the thermal performance of these structures for a likely application as thermal barriers.Processos de alta temperatura são de grande importância uma vez que são amplamente aplicados na manufatura de commodities, bens de consumo e materiais avançados. Para que esses processos sejam possíveis, o ambiente térmico no qual eles ocorrem deve ser constituído de materiais com características especiais, denominados refratários, onde sua estrutura em diferentes escalas, nano a micro, influenciam diretamente o desempenho térmico e mecânico destes. O desenvolvimento de cerâmicas técnicas refratárias avançadas vem utilizando técnicas de modelagem teórica das propriedades dos materiais a fim de correlacioná-las com os resultados experimentais possibilitando melhorar o seu desempenho. Tal movimento se baseia na utilização de ferramentas computacionais, como a simulação numérica, para estudar o impacto de diferentes características estruturais nas propriedades desses. Assim, a presente tese de doutorado utilizou diferentes métodos numéricos para auxiliar o desenho da microestrutura de materiais refratários para aplicações estruturais e de isolamento térmico. Foram avaliados o impacto de diferentes descritores microestruturais, como tamanho de poro e distribuição destes, nas propriedades térmicas e mecânicas de espumas cerâmicas para isolamento térmico. Foi observada a existência de uma faixa ótima de tamanho de poros, de 0,5 à 3,0 m, que reduz ao mínimo a condutividade térmica efetiva destes materiais para temperaturas acima de 1000 °C. No caso de materiais estruturais, baseando-se em trabalhos de simulação numéricas prévios, foi desenvolvida uma cerâmica refratária bio-inspirada com microestrutura engenheirada com alto desempenho mecânico tanto em temperatura ambiente (σf = 672,0 MPa e KIC = 7,4 MPa.m1/2) e em alta temperatura (σf = 350,0 MPa e KIC = 6,0 MPa.m1/2), 1200 °C. O desenvolvimento e caracterização deste material foi realizado em conjunto com o Instituto Federal de Tecnologia de Zurique (ETHz) e a Imperial College London. Adicionalmente, simulações termo-óticas foram utilizadas para avaliar o desempenho térmico destas estruturas para uma possível aplicação como barreiras térmicas.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)CNPq: 140232/2015-0porUniversidade Federal de São CarlosCâmpus São CarlosPrograma de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEMUFSCarAttribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessNacreBio-inspiredThermal insulationCeramicsRefractoriesMechanical propertiesBio-inspiradoCerâmicaRefratáriosPropriedades mecânicasIsolamento térmicoMadre pérolaENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::MATERIAIS NAO METALICOSDesenvolvimento de cerâmicas refratárias engenheiradas densas e porosasDevelopment of engineered porous and dense refractoriesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesis600600390bd4d1-c505-4015-b043-b075d197c61freponame:Repositório Institucional da UFSCARinstname:Universidade Federal de São Carlos (UFSCAR)instacron:UFSCARORIGINALPedro Ivo Batistel Galiote Brossi Pelissari - Tese.pdfPedro Ivo Batistel Galiote Brossi Pelissari - Tese.pdfTese de doutoradoapplication/pdf8892584https://repositorio.ufscar.br/bitstream/ufscar/12448/1/Pedro%20Ivo%20Batistel%20Galiote%20Brossi%20Pelissari%20-%20Tese.pdffd141a76491795979a2f24f5f96daa29MD51BCO carta comprovante autoarquivamento[11318].pdfBCO carta comprovante autoarquivamento[11318].pdfCarta Comprovante assinada pelo Orientadorapplication/pdf365633https://repositorio.ufscar.br/bitstream/ufscar/12448/2/BCO%20carta%20comprovante%20autoarquivamento%5b11318%5d.pdf08bdcbaedfc5a0ec4ad6f16de85621b4MD52CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8811https://repositorio.ufscar.br/bitstream/ufscar/12448/3/license_rdfe39d27027a6cc9cb039ad269a5db8e34MD53TEXTPedro Ivo Batistel Galiote Brossi Pelissari - Tese.pdf.txtPedro Ivo Batistel Galiote Brossi Pelissari - Tese.pdf.txtExtracted texttext/plain467094https://repositorio.ufscar.br/bitstream/ufscar/12448/4/Pedro%20Ivo%20Batistel%20Galiote%20Brossi%20Pelissari%20-%20Tese.pdf.txt36aa03bfa7da051037ad2ce1ce0f34d9MD54BCO carta comprovante autoarquivamento[11318].pdf.txtBCO carta comprovante autoarquivamento[11318].pdf.txtExtracted texttext/plain1503https://repositorio.ufscar.br/bitstream/ufscar/12448/6/BCO%20carta%20comprovante%20autoarquivamento%5b11318%5d.pdf.txtb8bf808c8aeac8197a1e0cd5f9744c37MD56THUMBNAILPedro Ivo Batistel Galiote Brossi Pelissari - Tese.pdf.jpgPedro Ivo Batistel Galiote Brossi Pelissari - Tese.pdf.jpgIM Thumbnailimage/jpeg6258https://repositorio.ufscar.br/bitstream/ufscar/12448/5/Pedro%20Ivo%20Batistel%20Galiote%20Brossi%20Pelissari%20-%20Tese.pdf.jpga709e01a29019cb361d1048f25900fc4MD55BCO carta comprovante autoarquivamento[11318].pdf.jpgBCO carta comprovante autoarquivamento[11318].pdf.jpgIM Thumbnailimage/jpeg10485https://repositorio.ufscar.br/bitstream/ufscar/12448/7/BCO%20carta%20comprovante%20autoarquivamento%5b11318%5d.pdf.jpgaa23c6653094d0fcee6aba7a6a75858cMD57ufscar/124482023-09-18 18:31:57.415oai:repositorio.ufscar.br:ufscar/12448Repositório InstitucionalPUBhttps://repositorio.ufscar.br/oai/requestopendoar:43222023-09-18T18:31:57Repositório Institucional da UFSCAR - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.por.fl_str_mv |
Desenvolvimento de cerâmicas refratárias engenheiradas densas e porosas |
dc.title.alternative.eng.fl_str_mv |
Development of engineered porous and dense refractories |
title |
Desenvolvimento de cerâmicas refratárias engenheiradas densas e porosas |
spellingShingle |
Desenvolvimento de cerâmicas refratárias engenheiradas densas e porosas Pelissari, Pedro Ivo Batistel Galiote Brossi Nacre Bio-inspired Thermal insulation Ceramics Refractories Mechanical properties Bio-inspirado Cerâmica Refratários Propriedades mecânicas Isolamento térmico Madre pérola ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::MATERIAIS NAO METALICOS |
title_short |
Desenvolvimento de cerâmicas refratárias engenheiradas densas e porosas |
title_full |
Desenvolvimento de cerâmicas refratárias engenheiradas densas e porosas |
title_fullStr |
Desenvolvimento de cerâmicas refratárias engenheiradas densas e porosas |
title_full_unstemmed |
Desenvolvimento de cerâmicas refratárias engenheiradas densas e porosas |
title_sort |
Desenvolvimento de cerâmicas refratárias engenheiradas densas e porosas |
author |
Pelissari, Pedro Ivo Batistel Galiote Brossi |
author_facet |
Pelissari, Pedro Ivo Batistel Galiote Brossi |
author_role |
author |
dc.contributor.authorlattes.por.fl_str_mv |
http://lattes.cnpq.br/1402623804537094 |
dc.contributor.author.fl_str_mv |
Pelissari, Pedro Ivo Batistel Galiote Brossi |
dc.contributor.advisor1.fl_str_mv |
Pandolfelli, Victor Carlos |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/7369376873984839 |
dc.contributor.authorID.fl_str_mv |
c3c04e20-606f-4955-85f3-b6aca78ced1d |
contributor_str_mv |
Pandolfelli, Victor Carlos |
dc.subject.eng.fl_str_mv |
Nacre Bio-inspired Thermal insulation Ceramics Refractories Mechanical properties |
topic |
Nacre Bio-inspired Thermal insulation Ceramics Refractories Mechanical properties Bio-inspirado Cerâmica Refratários Propriedades mecânicas Isolamento térmico Madre pérola ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::MATERIAIS NAO METALICOS |
dc.subject.por.fl_str_mv |
Bio-inspirado Cerâmica Refratários Propriedades mecânicas Isolamento térmico Madre pérola |
dc.subject.cnpq.fl_str_mv |
ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::MATERIAIS NAO METALICOS |
description |
High temperature processes are of great importance as they are widely applied in the manufacture of commodities, consumer goods and advanced materials. For these processes to be possible, the thermal environment in which they occur must consist of materials with special features, called refractories, for which their structure at different scales, nano to micro, influence directly their thermal and mechanical performance. The development of high-performance advanced refractory ceramics has been using techniques of theoretical modelling of the materials properties in order to correlate these features, making it possible to improve their performance. This trend is based on the use of computational tools, such as numerical simulation, to evaluate the impact of different structural characteristics on the properties of materials. Thus, the main goal of the present thesis was to use different numerical methods in order to assist the microstructure design of refractory materials for structural and thermal insulation applications. The impact of different microstructural descriptors, such as pore size and distribution, was evaluated for the thermal and mechanical properties of thermal insulating ceramic foams. It was observed the existence of an optimum pore size in the 0.5 to 3.0 m, range which reduces the effective thermal conductivity of these materials to a minimum for temperatures above 1000 °C. In the case of structural materials, it was also developed a bioinspired refractory with engineered microstructure presenting high mechanical performance at room (σf = 672.0 MPa and KIC = 7.4 MPa. m1/2) and high temperature (σf = 350.0 MPa and KIC = 6.0 MPa. m1/2), 1200 °C. The development and characterization of this latest material was carried out in conjunction with the Zurich Federal Institute of Technology (ETHz) and Imperial College London. Additionally, thermo-optical simulations were used to evaluate the thermal performance of these structures for a likely application as thermal barriers. |
publishDate |
2019 |
dc.date.issued.fl_str_mv |
2019-09-04 |
dc.date.accessioned.fl_str_mv |
2020-04-23T12:30:10Z |
dc.date.available.fl_str_mv |
2020-04-23T12:30:10Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/doctoralThesis |
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doctoralThesis |
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publishedVersion |
dc.identifier.citation.fl_str_mv |
PELISSARI, Pedro Ivo Batistel Galiote Brossi. Desenvolvimento de cerâmicas refratárias engenheiradas densas e porosas. 2019. Tese (Doutorado em Ciência e Engenharia de Materiais) – Universidade Federal de São Carlos, São Carlos, 2019. Disponível em: https://repositorio.ufscar.br/handle/ufscar/12448. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufscar.br/handle/ufscar/12448 |
identifier_str_mv |
PELISSARI, Pedro Ivo Batistel Galiote Brossi. Desenvolvimento de cerâmicas refratárias engenheiradas densas e porosas. 2019. Tese (Doutorado em Ciência e Engenharia de Materiais) – Universidade Federal de São Carlos, São Carlos, 2019. Disponível em: https://repositorio.ufscar.br/handle/ufscar/12448. |
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https://repositorio.ufscar.br/handle/ufscar/12448 |
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Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ info:eu-repo/semantics/openAccess |
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Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ |
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openAccess |
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Universidade Federal de São Carlos Câmpus São Carlos |
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Universidade Federal de São Carlos Câmpus São Carlos |
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