Utilize este identificador para referenciar este registo:
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: | 3B’s - Artigos em revistas/Papers in scientific journals |