...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physica, B. Condensed Matter >Dynamics of phase transformation during thermal explosion in the Al-Ni system: Influence of mechanical activation
【24h】

Dynamics of phase transformation during thermal explosion in the Al-Ni system: Influence of mechanical activation

机译：Al-Ni系统中热爆炸过程中的相变动力学：机械活化的影响

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

Time-resolved X-ray diffraction (TRXRD) techniques, which allowed for in-situ investigation of the dynamics of phase transformation during rapid, gasless heterogeneous reactions, were used to study the thermal explosion (TE) process in the stoichiometric Ni-Al system. Comparison of the phase transformation sequences for initial mixtures of the precursors and those after short-term high-energy ball milling shows that while for the former case the necessary condition for TE is melting of the reactive media, in the latter case TE occurs solely through solid-state reactions. It is also concluded that the rates of solid-state reaction are significantly enhanced due to an increase of oxygen-free contact surface area and a decrease of the scale of heterogeneity in the composite particles formed during mechanical treatment.
机译：时间分辨X射线衍射（TRXRD）技术可用于快速无气非均相反应过程中相变动力学的原位研究，用于研究化学计量Ni-Al系统中的热爆炸（TE）过程。比较前体的初始混合物和短期高能球磨后的混合物的相变顺序，结果表明，对于前一种情况，TE的必要条件是反应介质的熔化，而在后一种情况下，TE仅通过固态反应。还可以得出结论，由于无氧接触表面积的增加和机械处理过程中形成的复合颗粒异质性程度的降低，固态反应速率得到了显着提高。

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