Cr2O3掺杂对钡硼硅微晶玻璃的性能影响
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国防基础科研计划基金资助项目(No. A1420110097);中央高校基本科研业务费专项基金资助项目(No. ZYGX2011J025)

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Effect of Cr2O3 on the Properties of BaO-B2O3-SiO2 Glass-ceramics
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    摘要:

    采用固相合成法制备了高膨胀系数钡硼硅微晶玻璃材料。通过对该微晶玻璃进行X线衍射仪(XRD)、扫描电子显微镜(SEM)测试分析研究铬掺杂对BaO-B2O3- SiO2力、热、电性能及微观机理的影响。结果显示,热膨胀系数与介电损耗随Cr2O3含量增加而增大,研究表明,加入Cr2O3会促进该体系晶粒的生长,并促使晶相由石英晶相转变为方石英晶相,方石英热膨胀系数较高,其晶相含量增多导致热膨胀系数增大。该体系Cr2O3质量分数为0.5%时,制备出具有较高热膨胀系数(18.44×10-6/℃),较高抗弯强度(187 MPa),较低相对介电常数(5.5)的封装材料。

    Abstract:

    BaO-B2O3-SiO2 Glass-ceramics with high thermal expansion coefficient was made by solid state method.The phase composition and microstructure of the Glass ceramics were characterized by SEM and XRD.It turned out that the thermal expansion coefficient and dielectric loss increased with the content of Cr2O3.The results showed that the crystal growth was accelerated because of Cr2O3,and the quartz was transformed into the cristobalite.Because of the high thermal expansion coefficient of cristobalite,the increase of cristobalite accounted for the increase of the thermal expansion coefficient of Glass ceramics.The BaO-B2O3-SiO2 Glass ceramics were made with high thermal expansion coefficient (18.44×10-6/℃),high bending strength(187 MPa) and low dielectric constant(5.5) when the mass fraction of Cr2O3 was 0.5%.

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徐明江,李波. Cr2O3掺杂对钡硼硅微晶玻璃的性能影响[J].压电与声光,2014,36(2):248-251. XU Mingjiang, LI Bo. Effect of Cr2O3 on the Properties of BaO-B2O3-SiO2 Glass-ceramics[J]. PIEZOELECTRICS AND ACOUSTOOPTICS

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  • 在线发布日期: 2014-03-14
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