...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Philosophical Magazine Letters >Crystal growth kinetics in binary mixtures of model charged sphere colloids
【24h】

Crystal growth kinetics in binary mixtures of model charged sphere colloids

机译：模型带电球体胶体的二元混合物中的晶体生长动力学

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

From the formation of crystalline materials from their melts is at the heat of many important industrial processes. A rigorous and comprehensive understanding of the crystallization process, however, is still lacking, and its experimental and theoretical investigation has remained a considerable challenge. We studied the crystal growth velocities v of random composition body centred cubic (rc-bcc) colloidal crystals formed from a shear molten binary mixture of charged colloidal spheres suspended in deionized water. We used Bragg microscopy at constant particle number density n and as a function of the number fraction of large particles p. With increasing p the growth velocity v first drops steeply, then more slowly to yield an overall trapezoidal composition dependence. This dependence is not expected from the Wilson-Frenkel growth law for reaction limited growth which on the other hand correctly describes the number density dependence. The deviation possibly indicates a change in the kinetic prefactor.
机译：由它们的熔体形成结晶材料是在许多重要的工业过程中产生的。然而，仍然缺乏对结晶过程的严格和全面的理解，并且其实验和理论研究仍然是相当大的挑战。我们研究了由悬浮在去离子水中的带电胶体球的剪切熔融二元混合物形成的随机组成的体心立方（rc-bcc）胶体晶体的晶体生长速度v。我们使用布拉格显微镜以恒定的粒子数密度n和大粒子p的分数的函数进行计算。随着p的增加，生长速度v首先急剧下降，然后下降得更慢，从而产生总体梯形成分依赖性。威尔逊-弗伦克尔生长定律不能预期这种依赖关系，因为反应受限的生长可以正确地描述数量密度的依赖关系。该偏差可能表明动力学因素的变化。

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