复合晶核剂对BaO-B2O3-SiO2微晶玻璃性能的影响
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国防基础科研计划基金资助项目(A1420110097)

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Effect of ZrO2 and TiO2 Doped as Nucleating Agents on the Properties of BaO-B2O3-SiO2 Glass-ceramics
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    摘要:

    采用固相法制备高热膨胀系数BaO-B2O3-SiO2微晶玻璃,并通过X线衍射分析(XRD)、扫描电子显微镜(SEM)等方法研究不同比例锆钛复合晶核剂对微晶玻璃中石英的晶型转变、显微结构、热膨胀性能和介电性能的影响。结果表明,适当增大BaOB2O3SiO2微玻璃中晶核剂TiO2/ZrO2的比例,能促进微晶玻璃中石英晶相向方石英晶相的转变,提高微晶玻璃的热膨胀系数;晶核剂含量(质量分数)为3%ZrO2+4%TiO2时,制备出微观结构均匀致密,密度为2.876 g·cm-3,弯曲强度为172 MPa,热膨胀系数为16.05×10-6/℃,介电常数为5.81及介质损耗为6.4×10-4的低温共烧陶瓷(LTCC)基板封装材料。

    Abstract:

    BaO-B2O3-SiO2 glassceramics with high thermal expansion coefficient were prepared by the normal solid state reactions. Phase transformation of quartz, microstructure and thermal expansion coefficient of BaO-B2O3-SiO2 glassceramics doped with different TiO2/ZrO2 were investigated by X-ray diffraction(XRD) and scanning electron microscopes(SEM).Results showed that the thermal expansion coefficient of BaO-B2O3-SiO2 glass-ceramics could be promoted with the increasing of the proportion of the TiO2/ZrO2 because of the phase transformation from quartz to cristobalite.When doped with 3% ZrO2 and 4% TiO2 as nucleating agents, the low temperature cofired ceramics (LTCC) substrate material was obtained with compact structure(2.876 g·cm-3), max flexural strength of 172 MPa,thermal expansion coefficient of 16.05×10-6/℃,lower relative dielectric constant(5.81) and lower dielectric loss(6.4×10-4).

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吴流洋,李波,龙泉吟.复合晶核剂对BaO-B2O3-SiO2微晶玻璃性能的影响[J].压电与声光,2015,37(4):689-692. WU Liuyang, LI Bo, LONG Quanyin. Effect of ZrO2 and TiO2 Doped as Nucleating Agents on the Properties of BaO-B2O3-SiO2 Glass-ceramics[J]. PIEZOELECTRICS AND ACOUSTOOPTICS

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  • 在线发布日期: 2015-07-22
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