Effect of K2O addition on the crystallization property of dental glass-ceramics / 华西口腔医学杂志
West China Journal of Stomatology
; (6): 407-409, 2006.
Article
de Zh
| WPRIM
| ID: wpr-249809
Bibliothèque responsable:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To evaluate the effect of K2O addition on the crystallization property of dental glass-ceramics in the Li2O-SiO2-Al2O3-P2O5-ZnO system.</p><p><b>METHODS</b>Different content of K2O was added into Li2O-SiO2-Al2O3-P2O5-ZnO glass system. The heat-treated system of the glass-ceramics was determined by differential thermal analyses (DTA), then the crystallization components and the microstmcture of the glass-ceramics with different content of K2O were investigated from X-ray diffraction (XRD) analyses and scanning electron microscopy (SEM).</p><p><b>RESULTS</b>Addition of K2O helped to reduce the viscosity of the glass system and improved crystallization. More lithium disilicate crystals appeared after heated-treatment of the glass system which contained 5.3 wt% addition of K2O, and the homogeneously lath-shaped crystals were 4 gm in length.</p><p><b>CONCLUSION</b>Certain content of K2O can improve the crystallization property of dental glass-ceramics in the Li2O-SiO2-Al2O3-P2O5-ZnO system.</p>
Texte intégral:
1
Indice:
WPRIM
Sujet Principal:
Diffraction des rayons X
/
Microscopie électronique à balayage
/
Céramiques
/
Silice
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Cristallisation
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Porcelaine dentaire
/
Verre
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Température élevée
langue:
Zh
Texte intégral:
West China Journal of Stomatology
Année:
2006
Type:
Article