seleção de esmaltes cerâmicos utilizando um delineamento experimental segundo taguchi ceramic glaze obtaining and selection applying taguchi experimental design
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ID: 156354
2004
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Abstract
Para a obtenção de esmaltes com características adequadas a sua aplicação, é necessário definir, além da composição da frita base, a formulação da suspensão de esmalte e as condições de aplicação e queima. A influência de fatores como os aditivos utilizados e a temperatura de queima sobre as características do esmalte são muitas vezes desconhecidos. Este trabalho apresenta o método utilizado na condução dos testes de aplicação de esmaltes e os resultados obtidos para as características das superfícies esmaltadas. Foi analisada a influência de parâmetros da formulação do esmalte e temperatura de queima sobre as características de porosidade e dureza da superfície obtida. A utilização de um arranjo ortogonal de Taguchi auxiliou na escolha dos fatores e parâmetros dos testes de aplicação, definiu a seqüência de experimentos realizados e as propriedades medidas. As características avaliadas foram: a porosidade, a dureza ao risco, a dureza Mohs, a dureza Vickers e as características visuais. Após a realização dos experimentos foi possível identificar a formulação e os parâmetros que conferiram os melhores resultados quanto à aplicação pretendida para o esmalte.
Ceramic glaze with suitable characteristics can be obtained through selection of frit composition, glaze formulation and suitable application and firing parameters. However, most of time, the influence of factors like additives and firing temperature over glaze properties are unknown. This work presents the experimental design used for glaze application tests and resulting glazed surface characteristics. The influence of glaze formulation and firing temperature parameters over porosity and surface hardness was analyzed. A Taguchi orthogonal array provided support on conducting application tests and on analysis of glaze properties. The properties that were analyzed were: porosity, scratch hardness, Mohs hardness, Vickers hardness and visual characteristics. After this analysis the most suitable parameters for glaze obtaining were selected.
Ceramic glaze with suitable characteristics can be obtained through selection of frit composition, glaze formulation and suitable application and firing parameters. However, most of time, the influence of factors like additives and firing temperature over glaze properties are unknown. This work presents the experimental design used for glaze application tests and resulting glazed surface characteristics. The influence of glaze formulation and firing temperature parameters over porosity and surface hardness was analyzed. A Taguchi orthogonal array provided support on conducting application tests and on analysis of glaze properties. The properties that were analyzed were: porosity, scratch hardness, Mohs hardness, Vickers hardness and visual characteristics. After this analysis the most suitable parameters for glaze obtaining were selected.
| Reference Key |
lira2004cermicaseleo
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| Authors | ;C. Lira;O. E. Alarcon |
| Journal | Zootaxa |
| Year | 2004 |
| DOI |
10.1590/S0366-69132004000400005
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| URL | |
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