• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Symposium on Advanced Ceramics; 20061211-15; Singapore(SG) >In Situ Synthesis of Rod-like Tielite / Alumina Ceramic Composites via Mechanical Activation
【24h】

In Situ Synthesis of Rod-like Tielite / Alumina Ceramic Composites via Mechanical Activation

机译：机械活化原位合成棒状铁素体/氧化铝陶瓷复合材料

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

摘要

The purpose of this paper is to investigate the possibility of rod-like Al_2TiO_5 /α-Al_2O_3 composites in situ formation via a mechanical activation process. A QM-ISP-4 Planetary Mill was employed to activate mechanically the mixtures of anatase and corundum in air at room temperature for different times. The milled powder mixtures were pressed into platelets and then sintered in air at 1300℃ for 3 h. The XRD results showed that only Al_2TiO_5 and α-Al_2O_3 phases could be detected in the sintered samples when the activated time reached 30 hours. The SEM observations illustrated the unusual microstructure of Al_2TiO_5 /α-Al_2O_3 ceramic composite materials. Abnormal grains with longitudinal length ～10 μm transversal length ～1 μm and equiaxed matrix grains of ～3 μm on an average were observed. EDXA proved that the rod-like grains and the fine equiaxed matrix grains were composed of Al_2TiO_5 and α-Al_2O_3, separately. The roles of anisotropic grain growth caused by mechanical activation are discussed for the in situ formation of rod-like Al_2TiO_5 /α-Al_2O_3 ceramic composite materials.
机译：本文的目的是研究通过机械活化过程原位形成棒状Al_2TiO_5 /α-Al_2O_3复合材料的可能性。使用QM-ISP-4行星式研磨机在室温下在空气中机械活化锐钛矿和刚玉的混合物不同的时间。将磨碎的粉末混合物压成片，然后在1300℃的空气中烧结3小时。 X射线衍射结果表明，当活化时间达到30小时时，烧结样品中仅能检测到Al_2TiO_5和α-Al_2O_3相。 SEM观察表明，Al_2TiO_5 /α-Al_2O_3陶瓷复合材料具有不同寻常的微观结构。观察到纵向长度〜10μm的横向长度〜1μm的异常晶粒和平均等轴晶的〜3μm的等轴晶粒。 EDXA证明棒状晶粒和细等轴基体晶粒分别由Al_2TiO_5和α-Al_2O_3组成。讨论了由机械活化引起的各向异性晶粒长大对原位形成棒状Al_2TiO_5 /α-Al_2O_3陶瓷复合材料的作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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