ZrO_2含量对Bi_2O_3-B_2O_3-SiO_2系封接玻璃结构性能的影响  

Effect of ZrO_2 Content on Structure and Properties of Bi2O_3-B2O_3-SiO_2 Sealing Glass

作　　者：刘小磐[1,2] 庞先兵 万隆[1] 宋冬冬[1] 李荣辉[1] 

机构地区：[1]湖南大学材料科学与工程学院,湖南长沙410082 [2]广东风华高科技材料股份有限公司,广东肇庆526000

出　　处：《湖南大学学报（自然科学版）》2016年第12期44-49,共6页Journal of Hunan University:Natural Sciences

基　　金：硅酸盐建筑材料国家重点实验室开放基金资助项目(SYSJJ2015-09);湖南省科技计划项目(JC3048);环境光催化应用技术湖南省重点实验室开放课题项目(ccsu-KF-1504);上海航天八院SAST基金资助项目(2015044)

摘　　要：采用熔融法制备了Bi2O_3-B2O_3-SiO_2系封接玻璃.采用红外光谱、X-射线衍射、综合热分析、电子扫描电镜、抗弯强度测试等表征方法研究了ZrO_2含量对玻璃试样的结构、物相组成、软化温度、热膨胀系数、耐酸性和力学性能的影响.结果表明:当ZrO_2质量分数低于4%时,玻璃试样中没有晶体析出;当ZrO_2质量分数大于等于4%时,试样中有ZrO_2和α-Bi2O_3晶体析出.玻璃结构中主要存在[BO_3],[BO_4],[BiO_3],[SiO_4]和[ZrO_4]基团.当ZrO_2质量分数小于3%时,随着ZrO_2质量分数的增加,玻璃试样的转变温度Tg和软化温度Tf升高,膨胀系数降低,耐酸性增强,抗弯强度增加;当ZrO_2质量分数为3%时,试样的Tg和Tf达到最大值为510℃和562℃,膨胀系数达到最小值6.92×10-6 K-1,抗弯强度达到最大值49MPa;继续增加ZrO_2的含量,玻璃试样的转变温度Tg和软化温度Tf降低,膨胀系数增大,耐酸性变差,抗弯强度降低.Bi2O3-B2O3-SiO2 sealing glass was firstly prepared by melting method. The effect of ZrO2 content on the phase composition, softening temperature, thermal analysis, acid resistance, microstruc- ture and mechanical properties of sealing glass was studied by infrared spectra, X-ray diffraction analysis, thermal expansion coefficient testing, scanning electron microscopy and three-point bending testing. The results showed that when the ZrO2 content was less than 4%, crystal did not occurred in the glass sample, as it is known that when the ZrO2 content was equal to or more than 4%, ZrO2 crystal and α-Bi2O3 was found in the glass sample. [BO3], [BO4], [BiO3], [SiO4] and [ZrO4] groups are the main components of the sealing glass. When the ZrO2 content was less than 3% and with the increased amount of ZrO2, the softening temperature, transition temperature, acid resistance and bending strength of the glass sample in-creased, while its thermal expansion coefficient decreased. Meanwhile, when the ZrO2 content was 3%, softening temperature and transition temperature of the glass sample reached the maximum value of 510 ℃ and 562 ℃, respectively, while the thermal expansion coefficient reached the minimum value of 6.92 × 10^- 6 K^-1 , and the bending strength also reached the maximum value of 49 MPa. With the increase of ZrO2content, the softening temperature, transition temperature, acid resistance and bending strength of the glass sample decreased, but its expansion coefficient increased.

关 键 词：ZRO2 BI2O3 封接玻璃 耐酸性 膨胀系数 

分 类 号：TG171[金属学及工艺—金属表面处理]