CuO掺量对ZnO-B_(2)O_(3)-Bi_(2)O_(3)玻璃结构与热性能的影响  

Effect of CuO Doping on the Structure and Thermal Properties of ZnO-B_(2)O_(3)-Bi_(2)O_(3)Glass

作　　者：向婉婷 罗欣 江正迪 连启会 黄佳鑫 吴浪[1] Xiang Wanting;Luo Xin;Jiang Zhengdi;Lian Qihui;Huang Jiaxin;Wu Lang(School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang,Sichuan 621010)

机构地区：[1]西南科技大学材料与化学学院,四川绵阳621010

出　　处：《非金属矿》2024年第5期5-9,共5页Non-Metallic Mines

基　　金：国家自然科学基金(12375316)。

摘　　要：为了降低硼酸盐无铅封接玻璃的软化温度,研究了CuO掺量(0~15%,质量分数,下同)对40ZnO-30B_(2)O_(3)-30Bi_(2)O_(3)玻璃结构及热性能的影响。结果表明,在950℃保温2 h的熔制工艺条件下,试验组成范围内均能形成均质玻璃。随着CuO掺量增加,ZnO-B_(2)O_(3)-Bi_(2)O_(3)玻璃中的[BO_(3)]/[BO_(4)]结构单元比例先增大后减小,在CuO掺量为8%时达到最大值,此时[BO_(3)]结构单元含量相对较多。当CuO掺量进一步增加,部分[BO_(3)]逐渐向[BO_(4)]转变。此外,随CuO掺量增加,玻璃化转变温度及析晶温度逐渐降低,在400~850℃范围质量损失速率逐渐减小,但15%高掺量时呈现质量增加的趋势。玻璃的平均线热膨胀系数(25~450℃)随CuO增多无明显变化,保持在7.10×10^(-6)℃^(-1)左右。玻璃的软化温度和半球温度呈先降低后升高的趋势,当CuO掺量为8%时,软化温度和半球温度最低。In order to reduce the softening temperature of borate lead-free sealing glass,the effect of CuO doping(0-15%)on the structure and thermal properties of 40ZnO-30B_(2)O_(3)-30Bi_(2)O_(3)glass was investigated.The results showed that homogeneous glass was formed in the range of test compositions under the melting process at 950℃for 2 h.With the increase of CuO doping,the ratio of[BO_(3)]/[BO_(4)]units in ZnO-B_(2)O_(3)-Bi_(2)O_(3)glass system increased and then decreased,and reached the maximum at 8%CuO doping.The number of[BO_(3)]units was relatively more at 8%CuO doping.With the further increase of CuO incorporation,it gradually transformed part of[BO_(3)]to[BO_(4)].Furthermore,the glass transition temperature and the crystallization temperature decreased gradually with the increase of CuO doping.The rate of mass loss decreased gradually at 400-850℃,but showed a trendency of increasing mass at 15%high doping.The thermal expansion coefficient of the glass(25-450℃)remained almost unchanged with the increase of CuO doping,and kept about 7.10×10^(-6)℃^(-1).The softening temperature and hemispherical temperature of the glass showed a trendency of decreasing and then increasing,and the softening temperature and hemispherical temperature were the lowest when the CuO doping was 8%.

关 键 词：ZnO-B_(2)O_(3)-Bi_(2)O_(3) 低熔点玻璃 热膨胀系数 软化温度 CUO 

分 类 号：TQ171.1[化学工程—玻璃工业]