系统测量了四硼酸锂(Li2O-2B2O3)熔体的密度ρ、表面张力γ随着温度的变化规律,实验结果表明在1100K到1500K范围内Li2O-2B2O3高温熔体的密度和表面张力随着温度的升高均线性减小.通过实验数据拟合得出熔体密度与温度关系为ρ(T)=2.574-4.89×10-4T,熔点处LiO-2B2O3熔体的密度为1.992g/cm3;熔体表面张力与温度关系的...
摘要: The ionic conductivity, dynamical compressibility, IR and Raman spectra, as well as Li+ -H+ ion exchange property were investigated for Li2O-(LiCl)2-B2O3-Al2O3 glasses. The electrical property was interpretated from the point of view of glass structure....
1)以Li2O-B2O3-Al2O3-BaCO3为基础玻璃,按8Li2CO3-73H3BO3-5Al2O3-12BaCO3-1TiO2-1Sb2O3称取相应原料量,将原料通过研磨混合均匀后并装入氧化铝坩锅。将坩锅放入硅钼棒电炉中,于1450℃下保温1小时,浇入已预热的铁制模具中成型,置于450℃的马弗炉中退火1h后,以10℃/h的速率冷却至室温,得到无气泡的透明玻...
摘要: 采用固相工艺制备BaAl2Si2O8-xwt%Li2O-B2O3-SiO2(x=0,0.1,0.3,0.5,1.0,2.0)陶瓷.探究不同含量的Li2O-B2O3-SiO2(LBS)玻璃相对BaAl2Si2O8(BAS)陶瓷的烧结温度、结构及微波介电性能的影响.结果表明:LBS玻璃相可明显降低BAS陶瓷的烧结温度,并促... 查看全部>> ...
Li2O-Nb2O5-B2O3-TiO2透明微晶玻璃的二阶非线性光学效应
为了降低微晶玻璃的熔化温度,改善玻璃的化学稳定性,机械性能和玻璃的熔化质量,在Li2O-Al2O3-SiO2三元玻璃系统中加入5%的B2O3.但加入氧化硼容易产生玻璃分相,生成的主晶相β-石英固溶体就会减少,引起透光性下降.作者以TiO2,ZrO2作为复合晶核剂,通过改变成核温度,成核时间,晶化温度,晶化时间,控制晶体颗粒度大小,制备...
Glass forming region in the system Li2O-B2O3-GeO2 was determined. Glasses in three series, xLi2OB2O32GeO2, xLi2OB2O3GeO2 and Li2OxB2O3(3-x)GeO2 were prepared. Measurements of density, refractive index, thermal expansion and Vickers microhardness have been made with these glasses. Infra-re...
学校代号:10255学号:2100255硕士研究生学位论文B20”Li20、Zr02对MgO—A1203-Si02系高强玻纤性能的影响Theinfluenc..
In this work, we chose Li2O-B2O3-SiO2-CaO-Al2O3 (LBSCA, molar ratio of 52.45:31.06:11.99:2:2.5) glass and Bi2O3 oxide to co-dope Li0.43Zn0.27Ti0.13Fe2.17O4 ferrite ceramics using the solid-state method with a resintering condition (annealing), seeking to suppress AGG and obtain ...
Glasses in the series 42.5Li2O: (57.5−x)B2O3:xLi2SO4 (0⩽x⩽20) have been prepared by conventional quenching technique. The glass transition temperature and electrical conductivity for these glasses have been studied. The amorphous matrix accepts Li2SO4 up to 15 mol% without devitrificati...