• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Chemistry and Physics >Microstructure and mechanical properties of zirconia-toughened lithium disilicate glass-ceramic composites
【24h】

Microstructure and mechanical properties of zirconia-toughened lithium disilicate glass-ceramic composites

机译：Microstructure and mechanical properties of zirconia-toughened lithium disilicate glass-ceramic composites

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

The lithium disilicate glass-ceramics composites reinforced and toughened by tetragonal zirconia (3Y-TZP) were prepared by hot-pressing at 800 degrees C with varying zirconia content from 0 to 30 wt.. In the case of the composites of small zirconia content (below 10 wt.), zirconia acted as nucleation agent primarily, and the microstructure was refined continuously. The morphology of Li2Si2O5 crystals transformed from rod-shaped to spherical structure, and the mechanical properties decreased inevitably. For the composites of large zirconia content (from 15 wt. to 30 wt.), however, zirconia restrained the phase separation of glass. The morphology of Li2Si2O5 crystals transformed to rod-shaped structure again. The mechanical properties of the composite at zirconia content of 15 wt. increased up to 340 MPa and 3.5 MPa m(1/2) which were much higher than those of zirconia-free glass-ceramics. The improved properties were attributed mainly to compressive stress reinforcement, phase transformation and bridging toughening mechanisms. (C) 2013 Published by Elsevier B.V.

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号