...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Improving glass-forming ability and crystallization behavior of porous glass-ceramics in CaO-Al_2O_3-TiO_2-P _2O_5 system
【24h】

Improving glass-forming ability and crystallization behavior of porous glass-ceramics in CaO-Al_2O_3-TiO_2-P _2O_5 system

机译：在CaO-Al_2O_3-TiO_2-P _2O_5体系中提高多孔玻璃陶瓷的玻璃形成能力和结晶行为

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

Glass-forming ability and crystallization behavior of various compositions in the CaO-Al_2O_3-TiO_2-P_2O _5 system were investigated, using differential thermal analyzer (DTA), X-ray diffractometry (XRD) and scanning electron microscopy (SEM) methods. According to our experiments, the precipitated crystalline phases were altered and the glass-forming and crystallization behaviors improved simultaneously, by addition of Al_2O_3 to the system. In the most promising composition, calcium pyrophosphate (Ca_2P _2O_7) and calcium titanium phosphate (CaTi _4(PO_4)_6) were formed during an ordinary short time heat treatment around the first DTA crystallization peak temperature of it. However, long-term heat treatment led to crystallization of calcium pyrophosphate (Ca_2P_2O_7) and titanium pyrophosphate (TiP_2O_7) phases. Chemical leaching of the optimum resulted glass-ceramic with HCl, caused that calcium pyrophosphate was selectively dissolved out and a porous skeleton of titanium pyrophosphate remained. Porous structure of final products seems to be conceivable for applications as filters, membranes, catalyst supports, etc.
机译：利用差热分析仪（DTA），X射线衍射法（XRD）和扫描电子显微镜（SEM）研究了CaO-Al_2O_3-TiO_2-P_2O_5体系中各种成分的玻璃形成能力和结晶行为。根据我们的实验，通过向体系中添加Al_2O_3，改变了沉淀的结晶相，同时改善了玻璃的形成和结晶行为。在最有前途的组成中，焦磷酸钙（Ca_2P _2O_7）和磷酸钛钙（CaTi_4（PO_4）_6）在其第一个DTA结晶峰温度附近的普通短时热处理中形成。然而，长期的热处理导致焦磷酸钙（Ca_2P_2O_7）和焦磷酸钛（TiP_2O_7）相的结晶。用HCl对最佳的玻璃陶瓷进行化学浸出，导致焦磷酸钙被选择性地溶解出来，并保留了多孔的焦磷酸钛骨架。最终产品的多孔结构似乎可以用作过滤器，膜，催化剂载体等。

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