F、P_2O_5对钙铝硅系微晶玻璃烧结和析晶的影响  

Effects of F and P2O5 on the Sintering and Crystallization of CaO-Al_2O_3-SiO_2 System Glass-ceramic

作　　者：程金树[1] 裘慧广[1] 汤李缨[1] 

机构地区：[1]武汉理工大学硅酸盐材料工程教育部重点实验室,武汉430070

出　　处：《武汉理工大学学报》2009年第12期39-42,54,共5页Journal of Wuhan University of Technology

基　　金：国家"973"计划资助项目(2006CB708608);国家科技支撑计划(2006BAJ02B00)

摘　　要：以CaO-Al2O3-SiO2系统作为基础的微晶玻璃成分,掺入质量分数40%磷渣中所含有的F或P2O5来制备微晶玻璃。通过DTA、XRD、红外光谱等分析,研究F、P2O5对CaO-A12O3-SiO2系统微晶玻璃烧结和析晶的影响。研究结果表明:F和P2O5在微晶玻璃的核化和晶化过程中起到了促进析晶的作用,导致微晶玻璃在摊平过程时粘度增大,摊平温度升高。同时引入F和P2O5时所得到的样品比单一引入F或P2O5时所得到的样品有更高的摊平温度。F和P2O5并没有参与网络,而是起到了促进析晶的作用而改变了部分化学键的强度,使其吸收峰出现了微小的变化。XRD结果表明,样品的主晶相均为β-硅灰石,并没有含有CaF2和Ca3PO4晶相。CaO-Al2O3-SiO2 system glass-ceramic was obtained by adding F or P205 of 40% phosphorous slag into the basic ingredients. Through the DTA, XRD, FT-IR analysis, the effects of F and P2O5 on the sintering and crystallization of CaO-Al2O3-SiO2 system glass-ceramic were studied. The results show that F and P2Os have played a promoting role on the crystallization of glass-ceramics at the nucleation and crystallization process, resulting in the increasing of the viscosity and the smoothing temperature at the smoothing process of glass-ceramics. As a result, the samples added F and P2O5 have higher smoothing temperature than the samples added a single F or P2O5. F and P2O5 are not involved in the network of glass, while they have played a promoting role in the crystallization and changes the strength of chemical bonds and a small variety of FT-IR absorption peak. XRD results show that the main crystal phases of samples are all β-wollastonite and do not contain CaF2 and Ca3PO4.

关 键 词：CAO-AL2O3-SIO2 微晶玻璃 F P2O5 烧结 析晶 

分 类 号：TQ171[化学工程—玻璃工业]