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https://hdl.handle.net/1822/17595| Título: | 31P nuclear magnetic resonance and X-ray diffraction study of Na-Sr-phosphate glass-ceramics |
| Autor(es): | Pires, R. A. Abrahams, I. Nunes, Teresa G. Hawkes, G. E. |
| Palavras-chave: | Glass-ceramics Phosphates NMR X-ray powder diffraction |
| Data: | 2004 |
| Revista: | Key Engineering Materials |
| Resumo(s): | A set of Na-Sr-phosphate glass and glass-ceramic samples, with general formula xSrO:(0.55-x)Na2O:0.45P2O5, were prepared and analysed by solid state 31P nuclear magnetic resonance spectroscopy and X-ray powder diffraction. The results show the presence of Q1 and Q2 phosphate species in all samples. At low concentrations of Sr2+ (x £ 0.20) the strontium is preferentially incorporated in Sr2+-Q1 crystalline phases, and only at higher Sr2+ concentrations are crystalline phases present which Sr2+ is associated with Q2 phosphate units. |
| Tipo: | Artigo em ata de conferência |
| URI: | https://hdl.handle.net/1822/17595 |
| ISSN: | 1662-9795 |
| Arbitragem científica: | yes |
| Acesso: | Acesso aberto |
| Aparece nas coleções: |
