无机材料学报

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低温烧结细晶Y-TZP

孙义海; 张玉峰; 郭景坤   

  1. 中国科学院上海硅酸盐研究所 上海 200050
  • 收稿日期:2001-03-20 修回日期:2001-05-14 出版日期:2002-03-20 网络出版日期:2002-03-20

Low Temperature Sintering Superfine Y-TZP Ceramics

SUN Yi-Hai; ZHANG Yu-Feng; GUO Jing-Kun   

  1. Shanghai Institute of Ceramics. Chinese Academy of Sciences; Shanghai 200050; China
  • Received:2001-03-20 Revised:2001-05-14 Published:2002-03-20 Online:2002-03-20

摘要: 通过在Y-TZP中加入适量的硅酸盐玻璃添加剂,使其烧结温度明显降低,并且制备出具有细晶粒、高强度的四方相氧化锆增韧陶瓷材料.分析了添加剂含量及烧结温度与材料致密度、显微结构及力学性能的关系,发现在Y-TZP材料中加入1wt%的添加剂,可以使材料在1400℃下烧结,氧化锆晶粒尺寸约为100~200nm;其抗折强度可达950MPa.

关键词: Y-TZP, 低温烧结, 细晶陶瓷

Abstract: Tetragonal Zirconia Polycrystals (TZP) with superfine grains and high flexural strength were obtained by adding certain glass additives into Y-TZP powder and sintered at low temperature. The relationship between the density, mechanical properties arid the amount of additives, sintering temperature were investigated. The results show that Y-TZP with 1wt% glass additives can be densifed at 1400℃. The grain size of Y-TZP is 100-200nm and flexural strength can reach 950MPa.

Key words: Y-TZP, low temperature sintering, superfine ceramics

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