| Revue: | Materials research |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000312945 |
| ISSN: | 1516-1439 |
| Autores: | Bezzon, Osvaldo Luiz1 Barros, Celso de Pagnano, Valeria Oliveira Soriani, Natercia Carreira |
| Instituciones: | 1Universidade de Sao Paulo, Escola de Odontologia, Ribeirao Preto, Sao Paulo. Brasil |
| Año: | 2006 |
| Periodo: | Abr-Jun |
| Volumen: | 9 |
| Número: | 2 |
| Paginación: | 237-241 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Nota breve o noticia |
| Enfoque: | Experimental |
| Resumen en inglés | The purpose of this study was to compare the effect of casting temperature and atmosphere on the castability of three Ni-Cr alloys against direct flame casting method. Vera Bond (VB), Vera Bond 2 (VB2) and Wiron 99 (W99) were cast at three temperatures: VB and VB2 (1310 °C, 1340 °C and 1370 °C); W99 (1400 °C, 1430 °C and 1460 °C) in atmosphere, vacuum and direct flame. Each alloy was cast in seven different conditions. Castability was assessed by the method that verifies the alloy potential to reproduce a nylon mesh. Kruskal-Wallis test demonstrated for VB, while there was no influence in the temperature range, castability was greater by vacuum (99.3%) than by direct flame (96.2%) and atmosphere (93.06%). For VB2, castability was greater at evaluated temperatures (1370 °C = 94.4%, 1340 °C = 91.15% and 1310 °C = 87.9%) than direct flame (77.8%); related vacuum (97.33%) obtained better values than atmosphere (84.6%) and direct flame. For W99, while atmosphere had no influence, castability was higher at 1460 °C (84.3%) than at other temperatures (1430 °C = 70.3%, 1400 °C = 37.05%) and direct flame (62.5%). Comparison among interactions showed that for all alloys it was possible to significantly increase the filling percentage of the mold in a comparative manner with the direct flame cast method |
| Disciplinas: | Ingeniería, Medicina |
| Palabras clave: | Ingeniería de materiales, Odontología, Aleaciones, Níquel, Cromo, Propiedades mecánicas, Resistencia, Temperatura, Corrosión |
| Keyword: | Engineering, Medicine, Materials engineering, Dentistry, Alloys, Nickel, Chromium, Mechanical properties, Resistance, Temperature, Corrosion |
| Texte intégral: | Texto completo (Ver HTML) |
