Study on high strength mica-based machinable glass-ceramic / 生物医学工程学杂志
Journal of Biomedical Engineering
;
(6): 54-61, 2004.
Artigo
em Chinês
| WPRIM
| ID: wpr-312867
ABSTRACT
The phase constitution, microstructure and properties of a new type of machinable glass-ceramics containing fluorophlogopite-type (FPT) Ca-mica for used in restorative dentistry were investigated. According to the results of X-ray diffraction (XRD) and energy-dispersive spectrometry(EDS), its main crystalline phases were FPT Ca-mica and t-ZrO2, together with few KxCa(1-x)/2Mg2Si4O10F2, m-ZrO2. The flexible strength was 235 MPa, which was nearly two times larger than that of the present mica-based dental materials, and the highest fracture toughness was 2.17 MPa.m1/2. The microstructure had a great effect on properties, the glass-ceramics contained a large volume, and the fine crystals showed higher strength. The material possessed typical microstructure of machinable glass-ceramics and displayed excellent machinability during drilling test and CAD/CAM.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Fenômenos Biomecânicos
/
Teste de Materiais
/
Cerâmica
/
Materiais Dentários
/
Silicatos de Alumínio
/
Dureza
Idioma:
Chinês
Revista:
Journal of Biomedical Engineering
Ano de publicação:
2004
Tipo de documento:
Artigo
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