| Revista: | Quimica nova |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000199083 |
| ISSN: | 0100-4042 |
| Autores: | Campos, Silvia Denofre de1 Espindola, Claudio Silveira, Cristian Berto da Campos, Elvio Antonio de |
| Instituciones: | 1Universidade Federal de Santa Catarina, Departamento de Química, Florianopolis, Santa Catarina. Brasil 2Centro de Ciencias Exatas e Tecnologicas, Toledo, Parana. Brasil |
| Año: | 2002 |
| Periodo: | Mar-Abr |
| Volumen: | 25 |
| Número: | 2 |
| Paginación: | 186-190 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental |
| Resumen en inglés | The chemical durability of the Li2O-ZrO2-BaO-SiO2 system was examined by determination of the Vickers hardness. The dependence of hardness and of the chemical resistance with BaO addition was investigated. The experimental results indicate that the hardness increases with the BaO content. The samples surface's morphology submitted to the chemical treatment in acidic (H2SO4) and basic (KOH) solution was accompanied by scanning electron microscopy. The chemical durability of the materials with BaO showed better than the glass ceramic without this content. These materials treated with H2SO4 solution showed a preferential attack to the silica rich sites |
| Disciplinas: | Ingeniería |
| Palabras clave: | Ingeniería de materiales, Ingeniería química, Dureza, Vitro-cerámicas, Durabilidad, Morfología, Resistencia química, Acidos, Soluciones |
| Keyword: | Engineering, Chemical engineering, Materials engineering, Hardness, Glass ceramics, Durability, Morphology, Chemical resistance, Acids, Solutions |
| Texto completo: | Texto completo (Ver HTML) |
