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.
Article
Dans Zh
| WPRIM
| ID: wpr-312867
Responsable en Bibliothèque :
WPRO
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.
Texte intégral:
1
Indice:
WPRIM
Sujet Principal:
Phénomènes biomécaniques
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Test de matériaux
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Céramiques
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Matériaux dentaires
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Silicates d'aluminium
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Dureté
langue:
Zh
Texte intégral:
Journal of Biomedical Engineering
Année:
2004
Type:
Article