Effect of the Cool System on Internal Stress of CaO-Al_2O_3-SiO_2 Glass-ceramic System  

作　　者：何峰 

机构地区：[1]Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education(Wuhan University of Technology)

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2007年第4期760-763,共4页武汉理工大学学报（材料科学英文版）

基　　金：National Natural Science Foundation of China(50272043);Natural Science Foundation of Hubei Province(2002AB077);Natural Science Foundation of Wuhan University of Technology(2003XJJ013);Natural Science Foundation of Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education,Wuhan University of Technology

摘　　要：The samples were attained through altering the cooling system of producing glass-ceramics. The X-ray diffraction was used to test the stress value of different samples. The relation of the cooling system and internal stress were also investigated. The experimental results show that the stress of glass-ceramic had a close relation with starting cool temperature. Above 800 ~C, glass-ceramic could be accelerated cooling and did not bring stress. Temperature between 500 ℃ and 800℃ was an important temperature range of the formation of stress in glass-ceramic, in which the glass-ceramic stress would change obviously. Cool system was the key on how to control and eliminate internal stress in order to reduce the destroy of materials crated by internal stress. In addition, glass particles size increase, glass-ceramic stress increase in consequent.The samples were attained through altering the cooling system of producing glass-ceramics. The X-ray diffraction was used to test the stress value of different samples. The relation of the cooling system and internal stress were also investigated. The experimental results show that the stress of glass-ceramic had a close relation with starting cool temperature. Above 800 ~C, glass-ceramic could be accelerated cooling and did not bring stress. Temperature between 500 ℃ and 800℃ was an important temperature range of the formation of stress in glass-ceramic, in which the glass-ceramic stress would change obviously. Cool system was the key on how to control and eliminate internal stress in order to reduce the destroy of materials crated by internal stress. In addition, glass particles size increase, glass-ceramic stress increase in consequent.

关 键 词：CaO-Al203-SiO2 system GLASS-CERAMIC internal stress cooling system 

分 类 号：TQ174[化学工程—陶瓷工业]