华南理工大学学报(自然科学版) ›› 2006, Vol. 34 ›› Issue (1): 101-104.

• 材料科学与技术 • 上一篇    下一篇

纳米氧化铝对牙科烤瓷材料的强化与增韧

杨金萍1 吕明1 辛崇飞1 彭诚2 饶平根1 吴建青1†   

  1. 1.华南理工大学 特种功能材料及其制备新技术教育部重点实验室,广东 广州 510640;2.中国科学院 上海硅酸盐研究所,上海 200050)
  • 收稿日期:2005-03-14 出版日期:2006-01-25 发布日期:2006-01-25
  • 通信作者: 吴建青,教授,E-mail:imjqwu@scut.edu.en E-mail:imjp_yang@163.com
  • 作者简介:杨金萍(1973-),女,博士生,主要从事材料学方面的研究.
  • 基金资助:

    国家“863”计划资助项目(2002AA302204 );广东省科技计划资助项目(2001A1070102)

Strengthening and Toughening of Dental Porcelain Fused to M etal by Nano-Sized AI2O3

Yang Jin-ping1  Lü Ming1  Xin Chong-fei1  Peng Cheng2  Rao Ping-gen1  Wu Jian-qing1   

  1. 1.Key Laboratory of Specially Functional Materials and Advanced Manufacturing Tech.,the Ministry of Education.South China Univ.of Tech.,Guangzhou 510640,Guangdong,China;2.Shanghai Institute of Ceramics,the Chinese Academy of Sciences,Shanghai 200050,China
  • Received:2005-03-14 Online:2006-01-25 Published:2006-01-25
  • Contact: 吴建青,教授,E-mail:imjqwu@scut.edu.en E-mail:imjp_yang@163.com
  • About author:杨金萍(1973-),女,博士生,主要从事材料学方面的研究.
  • Supported by:

    国家“863”计划资助项目(2002AA302204 );广东省科技计划资助项目(2001A1070102)

摘要: 以纳米氧化铝为弥散颗粒,对低温牙科烤瓷材料进行了增强、增韧.采用x射线衍射技术研究了氧化铝在烧结体中的存在形态,并分析了氧化铝添加量对材料强度、硬度和韧性的影响.结果表明:牙科烤瓷材料的抗弯强度、硬度和韧性随纳米氧化铝添加量的增加而增加;在烧结温度不超过900 ℃时,添加1.5%(质量分数)的纳米氧化铝对牙科烤瓷材料有明显的增强增韧作用.

关键词: 纳米氧化铝, 牙科烤瓷材料, 力学性能

Abstract:

Nano sized AI2O3powders were used as dispersed particles to improve the toughness and strength of low.temperature dental porcelain fused to metal,and XRD was used to determine the phase composition of nano- sized AI2O3in the sintered specimen.The effects of AI2O3content on the strength,hardness and toughness of the sintered specimen were also investigated.Results show that the bending strength,hardness and toughness increase with the content of nano.sized AI2O3,and that adding 1. 5%(mass fraction)of nano-sized AI2O3 into the dental porcelain may remarkably enhance the strength and toughness when the sintering temperature is not higher than 900℃.

Key words: nano-sized AI2O3, dental porcelain fused to metal, mechanical propertv