Sintering character of nanocrystal calcium-deficient apatite / 实用口腔医学杂志
Journal of Practical Stomatology
;
(6)1996.
Artículo
en Chino
| WPRIM
| ID: wpr-542839
ABSTRACT
Objective:
To study the sintering character of calcium-deficient apatite.Methods:
Calcium-deficient apatite synthesised by wet chemical method was sintered at different temperature and then its chemical composition, phase structure and morphology were examined by FT-IR spectroscopy, X-ray diffraction (XRD) and field emission scanning microscopy (FESEM) respectively.Results:
When the heating temperature is below 500 ℃, apatite crystal kept a stable size with a diameter of 12-26 nm and a length of 30-66 nm. After sintered at 600 ℃ for 2 h, apatite crystal were with a diameter of 25-40 nm and a length of 75-100 nm. Around 800 ℃ for 2 h, apatite was decomposed into Ca_3(PO_4)_2.The crystal size of the Ca_3(PO_4)_2 surpassed 200 nm in diameter and length. NH_4+ ion could be removed at temperature beyond 300 ℃.Conclusion:
Calcium-deficient apatite has it's specific sintering character.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Idioma:
Chino
Revista:
Journal of Practical Stomatology
Año:
1996
Tipo del documento:
Artículo
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