...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Crystal Research and Technology: Journal of Experimental and Industrial Crystallography >In situ high-temperature X-ray diffraction study of the Rb2O-B2O3 glass forming system
【24h】

In situ high-temperature X-ray diffraction study of the Rb2O-B2O3 glass forming system

机译：Rb2O-B2O3玻璃形成系统的原位高温X射线衍射研究

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 results of X-ray structural analysis, in situ powder high temperature X-ray diffraction (HTXRD), DTA and annealing studies are summarized to refine the phase equilibria in the Rb2O-B2O3 system in air. Samples were prepared by solid state reaction as well as by the crystallisation of glasses. Investigations show that, in the latter case, high-temperature metastable phases crystallise first, and it takes some months to reach phase equilibria. The recent determination of crystal structures of Rb2B4O7, Rb3B7O12, Rb5B19O31, alpha,beta-RbB3O5 and beta-RbB5O8 along with the HTXRD and DTA study led to substantial revising of the Rb2O-B2O3 phase diagram between the 5-50 mol. % Rb2O Compositions. New compounds Rb3B7O12 and Rb5B19O31 and new phase relations in this connection are presented. The low (alpha) and high temperature (beta) modifications of RbB3O5 were discovered and alpha<---->beta transition is studied in details by powder HTXRD.
机译：总结了X射线结构分析，原位粉末高温X射线衍射（HTXRD），DTA和退火研究的结果，以改善Rb2O-B2O3系统在空气中的相平衡。通过固相反应以及玻璃的结晶制备样品。研究表明，在后一种情况下，高温亚稳相首先结晶，并且需要数月的时间才能达到相平衡。最近对Rb2B4O7，Rb3B7O12，Rb5B19O31，α，β-RbB3O5和β-RbB5O8的晶体结构的确定以及HTXRD和DTA研究导致对Rb2O-B2O3相图在5-50 mol之间的实质性修改。 ％Rb2O组成。提出了新的化合物Rb3B7O12和Rb5B19O31以及与此相关的新的相关系。发现了RbB3O5的低（α）和高温（β）修饰，并通过粉末HTXRD详细研究了α-β过渡。

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