晶核剂P_2 O_5对Li_2 O-ZnO-SiO_2微晶玻璃析晶性能的影响  

EFFECTS OF NUCLEATING AGENTS P_2O_s ON CRYSTALLIZATION OF Li_2 O-ZnO-Si0_2 GLASS-CERAMIC

作　　者：吴守平[1] 田清波[1] 王锐 

机构地区：[1]山东建筑大学材料科学与工程学院,济南250101 [2]山东省建筑科学研究院,济南250031

出　　处：《建筑技术开发》2011年第1期23-25,共3页Building Technology Development

基　　金：山东省中青年科学家奖励基金(No:BS2009CL050)

摘　　要：应用DSC(差热分析)、X-射线衍射、SEM(扫描电镜)等分析手段,研究了晶核剂P_2O_5含量对Li_2O-ZnO-SiO_2系玻璃析晶的影响。结果表明,在所研究的微晶玻璃体系中,析出晶相为方石英、磷石英以及少量的Li_2O·ZnO·SiO_2和SiO_2相。晶核剂P_2O_5的加入促进了玻璃中方石英晶体的析出,当P_2O_5添加量增加到4.0%时,该体系玻璃中析出的方石英相对含量达到最高。当进一步提高P_2O_5的含量达到5.1%时,促进了玻璃在低温下的析晶,基础玻璃在535℃的较低温度下可以析出晶体。The effects of different contents of the nucleating agent P2O5 on the crystallization behavior were investigated by DSC ,XRD and SEM in the Li2O-ZnO-SiO2 glass system. The results show that the crystal phase in the Li2O-ZnO-SiO2 glass-ceramic are cristobalite,tridymite,SiO2 and Li2O-ZnO-SiO2 . P2O5 is in favor of precipitation of the cristobalite phase and the content of cristobalite in the glass attains the highest when the additions of P2O5 content is 4. 0%. The further addition of the nucleating agent P2O5 to 5. 1% induces the growth of the crystallization at the lower temperatures of 535℃ in Li2O-ZnO-SiO2 glass.

关 键 词：微晶玻璃 晶核剂 P2O5 Li2O-ZnO-SiO2系统 

分 类 号：TQ171[化学工程—玻璃工业]