title: [Castable glass-ceramic-synthesizing and testing].
abstract: This paper introduces the composition of Castabe Glass-Ceramic (CGC), synthetic technique and physical and chemical properties. By means of TEM, SEM, XRD and EPMA techniques, the structure of CGC on K2O-MgO-Al2O-SiO2-F glass, type and size of crystallization are investigated. The results are as follows: the main crystal phase is tetrasilicic flourmica (K2Mg2.5Si4-O10F2), refractive index = 1.53, transparency = 48%, Density = 2.7 g/cm3, elastic modulus = 68.22 GPa, breaking strength = 141.1 MPa, breaking durability = 1.83 and V. H. = 505 kg/mm2. Base the above properties described, the function of CGC is similar to the Dicor (Dentsply. Int. U. S. A.) which is one of the well known material in western countries in now days.
authors.affiliation: Department of Stomatology, Tianjin Medical College.
authors.forename: S J
authors.initials: SJ
authors.lastname: Shi
mesh_terms: D001672:Biocompatible Materials; D003776:Dental Porcelain / Q000138:chemical synthesis* / Q000737:chemistry; D005898:Glass; D008422:Materials Testing
chemical_list: D001672:Biocompatible Materials; D003776:Dental Porcelain