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硅酸盐通报 ›› 2010, Vol. 29 ›› Issue (1): 176-179.

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R_2O_3(R=Al,B)对含磷硅酸盐乳浊玻璃显微结构和热膨胀行为的影响

高彬;刘树江   

  1. 山东轻工业学院山东省玻璃与陶瓷重点实验室,济南,250353
  • 出版日期:2010-02-15 发布日期:2021-01-18
  • 基金资助:
    山东省优秀中青年科学家科研奖励基金(2008BS04004)%济南科技明星计划(20080118)

Effects of R_2O_3(R=Al,B) on Microstructure and Thermal Expansion Behavior of Phosphorus-containing Silicate Opal Glasses

GAO Bin;LIU Shu-jiang   

  • Online:2010-02-15 Published:2021-01-18

摘要: 采用传统的熔融法制得了含P_2O_5的硅酸盐乳浊玻璃,利用XRD、SEM和EDS等手段研究了玻璃乳浊机理和微观结构,并且讨论了Al_2O_3和B_2O_3相对含量对显微结构和热膨胀系数的影响.结果表明:采用P_2O_5为乳浊剂,可以得到乳浊效果明显的硅酸盐系统乳浊玻璃,玻璃的乳浊是由亚稳分相的不稳分解造成的;用3wt% B_2O_3取代Al_2O_3后,玻璃试样析出少量晶体,第二相颗粒的尺寸变得不均匀,热膨胀系数变大.

关键词: 乳浊玻璃;分相;显微结构;热膨胀系数

Abstract: Phosphorus-containing silicate opal glasses were prepared by means of conventional melt quenching technology, and opaque mechanism and microstructure of the glasses were investigated by XRD,SEM and EDS methods.The influence of R_2O_3(R=Al or B) content on the microstructure and the thermal expansion coefficient was investigated. The results show that heavy opaque glasses are obtained due to the addition of P_2O_5, and this is results from unstable disassemble phase separation; with substituting 3wt%B_2O_3 for Al_2O_3, traces of unknown crystals are precipitated and particles size becomes inhomogenous, and thermal expansion coefficient increases greatly.

Key words: opal glass;phase separation;microstructure;thermal expansion coefficient

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