CeO_2/TiO_2对P_2O_5-B_2O_3-ZnO玻璃的结构和性能的影响  

Effects of CeO_2/TiO_2 on the Structure and Properties of P_2O_5-B_2O_3-ZnO Glass

作　　者：王振林[1] 廖思佳 杜云南 周明 WANG Zhenlin;LIAO Sijia;DU Yunnan;ZHOU Ming(College of Materials Science and Engineering,Chongqing University of Technology,Chongqing 400054,China)

机构地区：[1]重庆理工大学材料科学与工程学院,重庆400054

出　　处：《重庆理工大学学报（自然科学）》2018年第8期108-114,共7页Journal of Chongqing University of Technology：Natural Science

基　　金：重庆理工大学实验创新基金资助项目(2017021);重庆理工大学科研启动基金资助项目

摘　　要：采用熔融冷却法制备含不同CeO_2/TiO_2的P2O5-B2O3-Zn O玻璃,应用X射线衍射法、激光拉曼光谱法、分光光度法和热水浸泡法分别对玻璃的结构、光学性质、化学稳定性进行了表征。结果表明:CeO_2作为网络改性体使PO_4网络解聚;TiO_2部分作为网络形成体以四面体形式参与网络构建,部分作为网络改性体使网络解聚;掺入CeO_2/TiO_2使玻璃吸收边红移;CeO_2对可见光透过率影响比TiO_2小;TiO_2由于Ti^(3+)的存在使可见光区产生显著光吸收;掺CeO_2/TiO_2可明显提高玻璃的化学稳定性;CeO_2对化学稳定性的改善作用比TiO_2大。P2O5-B2O3-Zn O glasses containing varied CeO2/TiO2 were fabricated through meltquenching. Characterizations on structure,optical properties and chemical durability were carried out by using XRD,laser Raman spectrometry,spectrophotometry and hot water soaking test. The results shows that CeO2 as network modifier causes depolymerization of PO4 network,while TiO2 partially as the network former participates in the network construction in the form of tetrahedral and partially as modifier depolymerize network. Doping CeO2/TiO2 results in red shift of absorption edge and decline in optical band gap with CeO2 imposing less impact on visible transmittance than TiO2 that induces notable visible absorption due to the presence of Ti3 ＋. CeO2/TiO2 evidently improves the glass ＇chemistry durability that benefits more from CeO2 than from TiO2.

关 键 词：磷酸盐玻璃 氧化铈 氧化钛 

分 类 号：TQ171.1[化学工程—玻璃工业]