J4 ›› 2011, Vol. 24 ›› Issue (5): 26-29.

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ZnO含量对Li2O-ZnO-SiO2玻璃析晶及性能的影响

 陈立宗1, 吴守平2, 田清波2   

  1. 1.山东省分析测试中心,山东 济南 250014; 2.山东建筑大学材料科学与工程学院,山东 济南 250101
  • 收稿日期:2011-05-05 出版日期:2011-10-20 发布日期:2011-10-20
  • 通信作者: 陈立宗(1971-),男,工学硕士,研究方向为材料加工工程
  • 基金资助:

    山东省中青年科学家奖励基金项目(BS2009CL050)

Effects of ZnO content on the crystallization and property of Li2O-ZnO-SiO2 glass

 CHEN Li-Zong1, WU Shou-Ping2, TIAN Qing-Bo2   

  1. 1.Shandong Analysis and Test Center, Jinan 250014, China;
    2.School of Material Science and Engineering, Shandong Jianzhu University, Jinan 250101, China
  • Received:2011-05-05 Online:2011-10-20 Published:2011-10-20

摘要:

     应用差示扫描量热仪(DSC)、x-射线衍射(XRD)、扫描电子显微镜(SEM)等分析研究了ZnO含量对Li2O-ZnO-SiO2系玻璃析晶及性能的影响。结果表明,在所研究的微晶玻璃体系中,析出晶相为方石英、磷石英、Li2SiZnO4和SiO2相。随着ZnO添加量的不断增加,析出方石英相相对含量呈现出先增加后减少的趋势。其热膨胀系数α值受析出方石英相相对含量的影响,也呈现出先增加后降低的趋势。当ZnO的质量分数增加到21.1%时,该体系玻璃中析出的方石英相对含量达到最高;当ZnO的质量分数为26.7%时,其热膨胀系数α值达到最大为19.13×10-6/ ℃。

关键词: 微晶玻璃, 晶核剂, ZnO, Li2O-ZnO-SiO2体系

Abstract:

     We addressed the effects of different ZnO content on the crystallization behavior and property of the Li2O-ZnO-SiO2 glass system with differential scanning calorimeters (DSC), x-ray diffraction (XRD) and scanning electronic microscope (SEM). Experimental results show that its precipitated phases are cristobalite, tridymite, Li2SiZnO4and SiO2. The relative cristobalite content initially increases and then decreases with the increase of ZnO content. The cristobalite phase influenced thermal expansion coefficient α also initially increases and then decreases. The relative cristobalite content reaches the highest value when the ZnO content arrives at 21.1%.Its thermal expansion coefficient α reaches the maximum value of 19.13×10-6/℃ when the ZnO content arrives at 26.7%.

 

Key words: glass-ceramic, nucleating agent, ZnO, Li2O-ZnO-SiO2 glass system

中图分类号: 

  • TQ171