Ceramic property variation as a function of water corrosion at interfaces

陶瓷性能随界面水腐蚀的变化

• 批准号: 2444037
• 金额: --
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2444037
• 关键词: Ceramic; property; variation; function; water

This project focuses on understanding the effect of supercritical and high-temperature water on forsterite, the magnesium end-member of the olivine mineral series, an emerging engineering ceramic and major component of the upper mantle. The primary aim is to understand how the presence of water affects the grain boundary character distribution and how it incorporates into the forsterite structure (in the bulk vs at interfaces). I will synthesise forsterite and use novel electron backscatter diffraction (EBSD) and transmission Kikuchi diffraction (TKD) techniques to look at the interfacial distribution, transmission electron microscopy (TEM) to study the interfacial structure, and infrared spectroscopy to look at hydrogen incorporation. By developing an understanding of the interfacial structure and how this changes with water content, the applications of forsterite can be widened, and a greater understanding of the Earth's structure and dynamics can be achieved.

该项目的重点是了解超临界和高温水对镁橄榄石的影响，镁橄榄石是橄榄石矿物系列的镁端元，是一种新兴的工程陶瓷和上地幔的主要成分。主要目的是了解水的存在如何影响晶界特征分布，以及它如何融入镁橄榄石结构（在本体与界面处）。我将合成镁橄榄石，并使用新的电子背散射衍射（EBSD）和透射菊池衍射（TKD）技术来研究界面分布，透射电子显微镜（TEM）来研究界面结构，红外光谱来研究氢的掺入。通过了解界面结构以及这种结构如何随含水量变化，可以扩大镁橄榄石的应用范围，并可以更好地了解地球的结构和动力学。