Atomistic Scale Study of Radiation Effects in ABO3 Perovskites

ABO3 钙钛矿辐射效应的原子尺度研究

基本信息

批准号：
EP/L005581/1
负责人：
Karl Whittle
金额：
$ 60.21万
依托单位：
University of Sheffield
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2014
资助国家：
英国
起止时间：
2014 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FL005581%2F1
关键词：
Atomistic Scale Study Radiation Effects

项目摘要

SummaryThe development of nuclear power is at an important juncture, with two competing but in many ways complementary technologies: fusion and fission. However, while the nuclear methodology is different the engineering challenge is the same, that is, the need to remove the generated heat while structures are subject to high levels of radiation damage and residual nuclear products. In particular, radiation damage effects and gas bubble formation are problematic issues for the development of both fusion and GenIV fission reactors. For example in a GenIV fission core, the Xe and Kr gas comes from fission of the fissile nuclei, that is, Pu and U, while in a fusion core He is formed within the D-T plasma. This proposal aims to address these issues using tunable perovskites, as model materials, and focusing on the following issues:1. Crystalline to amorphous transformation mechanisms in tunable ceramics instigated using non-radioactive ion beams.2. Bubble nucleation at micro-structural traps in predominantly fission reactor materials, e.g. oxide based fuels, and ODS materials, but which can be formed by He implantation from fusion plasma He nucleation, and damage in materials for use in fusion cores, such as YBCO superconductors suggested as magnetic containment in for example, ITER and DEMO.The research will be undertaken using the approach of experimental and simulation techniques combined holistically. The experimental study will utilise in-situ and bulk irradiation, primarily in combination with advanced electron microscopy and atom probe tomography. The complementary simulation programme will be based on irradiated materials, but focusing on recovery mechanisms, bubble evolution, and validation of current models. The outcomes of the research will be used in the development of new materials for use as both fuels, for example Inert Matrix, or as magnetic containment devices in ITER/DEMO. The information from this research can also be utilised in other non-standard reactor technologies such as the travelling wave designs.The information derived will also help the design of future waste forms for Pu/U, specifically into new phases capable of tolerating the effects of radiation damage, and He bubble formation.

总结核能的发展是一个重要的关头，具有两个竞争，但在许多方面互补的技术：融合和裂变。但是，虽然核方法与工程挑战不同，也就是说，在结构受到高水平的辐射损伤和残留核产品的同时，需要去除产生的热量。特别是，辐射损伤效应和气泡形成是融合和节奏裂变反应器发展的问题问题。例如，在节奏裂变核心中，Xe和Kr气体来自裂变核的裂变，即PU和U，而在融合核心中，他在D-T等离子体中形成。该建议旨在使用可调的钙钛矿作为模型材料来解决这些问题，并专注于以下问题：1。使用非放射活性离子束刺激的可调陶瓷中的晶体至无定形转化机制。2。在主要裂变反应器材料中的微观结构陷阱的气泡成核，例如基于氧化物的燃料和ODS材料，但可以通过融合等离子植入核定和用于融合核的材料的损坏来形成，例如YBCO超导体，例如在ITER和DEMO中建议用作磁性封闭。将使用整体合并的实验和仿真技术的方法进行。实验研究将利用原位和大量照射，主要与晚期电子显微镜和原子探针断层扫描结合使用。互补的仿真程序将基于辐射的材料，但着重于恢复机制，气泡演化和当前模型的验证。该研究的结果将用于开发新材料作为两种燃料的使用，例如惰性矩阵，或ITER/DEMO中的磁遏制装置。这项研究的信息也可以用于其他非标准反应堆技术，例如波动波设计。该信息还将有助于PU/U的未来废物形式的设计，特别是用于能够容忍影响的新阶段辐射损坏，他的气泡形成。

项目成果

期刊论文数量（7）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Using Machine Learning To Identify Factors That Govern Amorphization of Irradiated Pyrochlores

DOI：
10.1021/acs.chemmater.6b04666
发表时间：
2016-07
期刊：
Chemistry of Materials
影响因子：
8.6
作者：
G. Pilania;K. Whittle;Chao Jiang;R. Grimes;C. Stanek;K. Sickafus;B. Uberuaga
通讯作者：
G. Pilania;K. Whittle;Chao Jiang;R. Grimes;C. Stanek;K. Sickafus;B. Uberuaga

In-situ irradiation of Ca1-xLa2/3xTiO3 defect perovskites: The role of vacancies in recovery

Ca1-xLa2/3xTiO3 缺陷钙钛矿的原位辐照：空位在恢复中的作用