| Revue: | Materials research |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000312754 |
| ISSN: | 1516-1439 |
| Autores: | Appoloni, Carlos Roberto1 Fernandes, Celso Peres2 Innocentini, Murilo Daniel de Mello3 Macedo, Alvaro4 |
| Instituciones: | 1Universidade Estadual de Londrina, Departamento de Fisica, Londrina, Parana. Brasil 2Universidade Federal de Santa Catarina, Departamento de Engenharia Mecanica, Florianopolis, Santa Catarina. Brasil 3Universidade Federal de Sao Carlos, Departamento de Engenharia de Materiais, Sao Carlos, Sao Paulo. Brasil 4Empresa Brasileira de Pesquisa Agropecuaria, Instrumentacao Agropecuaria, Sao Carlos, Sao Paulo. Brasil |
| Año: | 2004 |
| Periodo: | Oct-Dic |
| Volumen: | 7 |
| Número: | 4 |
| Paginación: | 557-564 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Nota breve o noticia |
| Enfoque: | Experimental |
| Resumen en inglés | Knowledge of the porous structure of amorphous materials is of fundamental importance in calculating geometrical parameters such as total porosity, pore size distribution and physical parameters relating to fluid flow inside void space. The present work deals with the measurement of the microstructural parameters of porous ceramic filters. Microtomographic measurements of samples were taken using an X-ray tube. Bremsstrahlung radiation was filtered in transmission mode with a Sn filter at 58.5 and 28.3 keV and the images analyzed in two ways. The first method consisted in analyzing transepts of the images in order to calculate total porosity based on the average particle size and media linear attenuation coefficients. The second method involved a study of the images using an image analysis software, called Imago, which allows one to calculate total porosity and pore size distribution. The total measured porosity of the filter C90 was 73.8%, 71.1%, 74.4% and 71.5% by, respectively, the Arquimedes method, simple gamma ray transmission, transept analysis and analysis of the microtomographic images at 28.3 keV |
| Disciplinas: | Ingeniería |
| Palabras clave: | Ingeniería de materiales, Ingeniería mecánica, Cerámica, Microestructuras, Porosidad, Propiedades físicas |
| Keyword: | Engineering, Materials engineering, Mechanical engineering, Ceramics, Microstructures, Porosity, Physical properties |
| Texte intégral: | Texto completo (Ver HTML) |
