Relationship between Leucite Content and Compressive Strength of K_2O-Al_2O_3-SiO_2 System Dental Glass Ceramics  

作　　者：张飚 钱法汤 

机构地区：[1]Key Laboratory of Oral Biomedical Engineering of Ministry of Education,Wuhan University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2009年第1期72-74,共3页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Natural Science Foundation of Hubei Province of China(No. 2006ABA250)

摘　　要：Relationship between leucite content and compressive strength of K2O-Al2O3-SiO2 sys-tem dental glass ceramics were investigated. 10 groups of feedstock powder with different composi-tions were treated according to the same thermal treatment system of leucite micro-crystallization reported in some primary studies. The products of each group were analyzed by X-ray diffractometer, polaring microscope and scanning electronic microscope （SEM）, and then the compressive strength was tested by a material testing machine. A direct proportion was found between leucite content and the compressive strength when leucite content was less than 50 vol%, and compressive strength de-creased with the increasing of leucite micro-crystals when leucite content was more than 50vol%, The leucite content has a notable influence on the compressive strength of K2O-Al2O3-SiO2 system dental glass ceramics.Relationship between leucite content and compressive strength of K2O-Al2O3-SiO2 sys-tem dental glass ceramics were investigated. 10 groups of feedstock powder with different composi-tions were treated according to the same thermal treatment system of leucite micro-crystallization reported in some primary studies. The products of each group were analyzed by X-ray diffractometer, polaring microscope and scanning electronic microscope （SEM）, and then the compressive strength was tested by a material testing machine. A direct proportion was found between leucite content and the compressive strength when leucite content was less than 50 vol%, and compressive strength de-creased with the increasing of leucite micro-crystals when leucite content was more than 50vol%, The leucite content has a notable influence on the compressive strength of K2O-Al2O3-SiO2 system dental glass ceramics.

关 键 词：leucite content compressive strength glass ceramics 

分 类 号：TQ174.1[化学工程—陶瓷工业]