Structural and thermal behavior of 45S5 Bioglass®-based compositions containing alumina and strontium
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2020
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Journal of the American Ceramic Society
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The present research exposes the influence of 2 mol% of Al2O3 and 2 mol% SrO in
45S5 Bioglass®-based compositions. Four compositions were produced to elucidate
the difference in how both oxides influence structure and thermal behavior separately
and their synergy when together. Thermal properties, crystallization tendency, and
sintering behavior was evaluated by differential scanning calorimetry, hot stage microscopy,
and dilatometry. Changes of medium-range structures were characterized
by Qn distribution of Raman spectroscopy and evaluation of 31P, 27Al, 23Na, and 29Si
environment obtained by magic angle spinning nuclear magnetic resonance. Despite
Qn distribution was predominantly Q2 in all samples, the composition criteria used
enabled improved processing and stabilibity characteristics. The addition of Al2O3
and SrO promoted larger sinterability parameter (Sc) which indicates better sintering
behavior, the glass stability against crystallization doubled (KH) compared to 45S5
and the processing window enlarged from 106 to 171.
Como referenciar
ARAUJO, MARIANA S.; SILVA, ANTONIO C.; BARTOLOMÉ, JOSÉ F.; MELLO-CASTANHO, SONIA. Structural and thermal behavior of 45S5 Bioglass®-based compositions containing alumina and strontium. Journal of the American Ceramic Society, v. 103, n. 6, p. 3620-3630, 2020. DOI: 10.1111/jace.17061. Disponível em: http://repositorio.ipen.br/handle/123456789/31386. Acesso em: 28 Mar 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.