稀土离子替代对无岩结构相位分解的影响
Geeta Sharma1, Sarathkumar Loganathan1, Eric K Barimah1
1Faculty of Engineering and Physical Sciences, School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, United Kingdom.
概括
稀土离子兴奋剂影响了阿帕的分解,影响了三酸的形成. 这影响了高温材料的处理和对阿帕蒂特结构的理解.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 晶体学 晶体学是指结晶学.
背景情况:
- 在各种高温应用中,阿帕矿物质至关重要.
- 了解相位分解是优化材料性能的关键.
- 稀土离子兴奋剂提供了一种调整无情行为的方法.
研究的目的:
- 调查稀土离子合的阿帕提特的阶段分解.
- 分析晶体变化和热性质.
- 确定兴奋剂对三酸形成的影响.
主要方法:
- 稀土离子合的阿帕蒂特的Sol-gel合成.
- 在现场高温粉末X射线衍射 (XRD) 用于相位分析.
- 不同扫描热度计 (DSC),热重度计分析 (TGA) 和X射线光电谱 (XPS) 用于分解和化学状态分析.
主要成果:
- 稀土离子兴奋剂 (Ce,Sm,Ho) 是通过sol-gel方法实现的.
- XRD揭示了晶体变化和扩张,主要沿着c轴.
- DSC/TGA显示出受稀土离子及其氧化状态 (Ce, Sm) 影响的可变分解行为.
- XPS表示,和的兴奋剂通过调节空隙度将三酸盐产量限制在25%.
结论:
- 稀土离子兴奋剂显著改变了亚酸盐阶段分解和三酸的形成.
- 这项研究提供了对氧化状态和空缺在化酸盐系统中的作用的见解.
- 这些发现对涉及无材料的高温工业工艺有影响.
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