Glass-Ceramics: Damaging Bubble Formation

微晶玻璃：破坏气泡的形成

基本信息

批准号：
EP/M018792/1
负责人：
Karl Whittle
金额：
$ 53.93万
依托单位：
University of Liverpool
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2016
资助国家：
英国
起止时间：
2016 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FM018792%2F1
关键词：
Glass Ceramics Damaging Bubble Formation

项目摘要

Developing improving methods for the safe immobilisation of radioactive nuclear waste is a challenge the world over. There are many options which have been developed based on both glass and ceramics, each of which has advantages and disadvantages, and behaves differently to the effects of radiation damage from alpha decay. This project combines the expertise and talents within the UK and India to develop the next generation of materials capable of safely storing nuclear waste, using glass-ceramics. Glass-ceramics are defined as ceramic particles distributed within a glass matrix, similar to fruit/nut placed in chocolate.The project will address both model compositions and the effects of radiation damage, from alpha decay, and the formation of helium bubbles within the material, through to real life systems. For example one key question to answer is whether the interface between a ceramic particle and the glass matrix acts as a location where He bubbles can form and act as a stress point which in turn initiates crack formation. Of equal importance is how the interface behaves over time, does it remain sharp or begin to soften, which in itself will impact the long term stability of the material. Such an effect will have profound effect on the mechanical performance over extended periods of time. The results from this work will extend the applicability of glass-ceramics and extend their use into other areas, while at the same broaden collaboration between India and the UK in the development of nuclear waste storage for the future.

开发改进的方法来安全固定放射性核废料是全世界的挑战。基于玻璃和陶瓷都有许多选择，每种选择都具有优势和缺点，并且对α衰减的辐射损害的影响有所不同。该项目结合了英国和印度境内的专业知识和才能，以开发能够使用玻璃陶瓷安全存储核废料的下一代材料。玻璃陶瓷定义为分布在玻璃基质中的陶瓷颗粒，类似于巧克力中放置的水果/螺母。该项目将解决模型组合物和辐射损伤的影响，来自Alpha decay以及材料中氦气的形成，通过现实生活系统。例如，要回答的一个关键问题是陶瓷粒子和玻璃基质之间的接口是否充当他的气泡可以形成并充当应力点的位置，从而又启动了裂纹形成。同等重要的是界面随着时间的流逝的行为，它会保持清晰还是开始软化，这本身会影响材料的长期稳定性。这种影响将对长时间的机械性能产生深远的影响。这项工作的结果将扩大玻璃陶瓷的适用性，并将其扩展到其他领域，而在印度和英国之间在未来开发核废料储存方面的相同范围内。