华西口腔医学杂志

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氧化铝—氧化锆纳米复合渗透陶瓷热膨胀特性的研究

邓霞,岑远坤,陈永平,廖运茂   

  1. 610041 口腔生物医学工程教育部重点实验室|口腔生物医学工程教育部重点实验室
  • 收稿日期:2003-06-25 修回日期:2003-06-25 出版日期:2003-06-20 发布日期:2003-06-20
  • 基金资助:
    卫生部科学技术基金重点资助项目 (编号 99-369)

DENG Xia, CEN Yuankun, CHEN Yongping, et al.   

  1. Key Lab. for Oral Biomedical Engineering Ministry of Education,West China College of Stomatology, Sichuan University,Chengdu 610041,China
  • Received:2003-06-25 Revised:2003-06-25 Online:2003-06-20 Published:2003-06-20

摘要:

目的 本实验旨在研究氧化铝—氧化锆纳米复合渗透陶瓷的热膨胀特性。方法 分别制作氧化铝—氧化锆基体、玻璃体、玻璃渗透复合体试件 ,测定各试件的热膨 胀系数 ,对测定结果及相互关系进行比较。结果 氧化锆含量为 1 0wt%、2 0wt%和 30wt%的复合基体的热膨胀系数分别为 7 6 0 7、7 6 90和 8 1 1 1 μm (m·℃ ) ;AZ8和AZ1 0两种渗透玻 璃的热膨胀系数分别为 6 86 7和 7 333μm (m·℃ ) ;AZ8和AZ1 0玻璃渗透氧化锆含量为1 0wt%~ 30wt%的基体所得渗透复合陶瓷的热膨胀系数为 8 2 0 3~ 8 4 1 3μm (m·℃ )。 结论  渗透玻璃的热膨胀系数与复合基体是匹配的 ;氧化铝—氧化锆纳米复合渗透陶瓷的热膨胀系数与几种常用的饰面瓷是匹配的。

关键词: 纳米复合陶瓷, 渗透陶瓷, 热膨胀系数

Abstract:

Objective To study the characteristics of thermal expansion of the aluminazirconia nanocomposite infiltrated ceramic.Methods The thermal expansion coefficients of aluminazirconia composite matrix, infiltrating glass and infiltrated ceramic were determined by various methods, respectively.Results The coefficients of thermal expansion of composite matrix with 10 wt%, 20 wt% and 30 wt% zirconia were 7 607, 7 690 and 8 111 μm/(m·℃) respectively. The thermal expansion coefficients of AZ8 and AZ10 infiltration glass were 6 867 and 7 333 μm/(m·℃), respectively. The thermal expansion coefficient of infiltrated ceramic was 8 413 μm/(m·℃).Conclusion The thermal expansion coefficients of the glass and composite matrix matched well. The thermal expansion coefficients of the aluminazirconia nanocomposite infiltrated ceramic and several common veneering porcelains matched well, too.

Key words: nano-composite ceramic, infiltrated ceramic, coefficient of thermal expansion (CTE)