| Revue: | Materials research |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000312946 |
| ISSN: | 1516-1439 |
| Autores: | Miranda, Marcus Aurelio Ribeiro1 Sasaki, Jose Marcos Sombra, Antonio Sergio Bezerra Silva, Cleber Costa Remedios, Claudio Marcio Rocha |
| Instituciones: | 1Universidade Federal do Ceara, Departamento de Fisica, Fortaleza, Ceara. Brasil |
| Año: | 2006 |
| Periodo: | Abr-Jun |
| Volumen: | 9 |
| Número: | 2 |
| Paginación: | 243-246 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Nota breve o noticia |
| Enfoque: | Experimental |
| Resumen en inglés | Nanocrystalline powder of tripotassium sodium sulfate (K3Na(SO4)2 - KNS) was successfully obtained by mechanical alloying a mixture of potassium sulfate (K2SO4) and sodium sulfate (Na2SO4) with a proportion of 3:1 in a planetary mill. X ray powder diffraction (XRPD) was used to characterize this material. Powders produced with high milling times: 15, 30, 45 and 60 hours, have shown a single phase. For 60 hours of milling time, the powder was formed with very small grains (60 nm in average). We also prepared several samples with low milling times: 30, 60, 120, 150 and 180 minutes. The results for this series show that 120 minutes of milling is enough to produce a single crystalline phase of KNS. Therefore, we showed that a nanocrystalline powder of tripotassium sodium sulfate is easily obtained by mechanical alloying and that the grain size can be controlled by the amount of milling time |
| Disciplinas: | Ingeniería, Física y astronomía |
| Palabras clave: | Ingeniería de materiales, Física de materia condensada, Sulfatos, Aleaciones, Difracción de rayos X, Nanopartículas, Propiedades físicas |
| Keyword: | Engineering, Physics and astronomy, Materials engineering, Condensed matter physics, Sulfates, Alloys, X-ray diffraction, Nanoparticles, Physical properties |
| Texte intégral: | Texto completo (Ver HTML) |
