中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
The effect of thermal oxidation on the coefficient of thermal expansion of nuclear graphite

文献类型:期刊论文

作者Yang, X; Wang, X; Tsang, DKL
刊名JOURNAL OF MATERIALS SCIENCE
出版日期2020
卷号55期号:18页码:7805-7815
关键词PHYSICAL-PROPERTIES MICROSTRUCTURE IRRADIATION POROSITY DEFECTS TEMPERATURE DIFFUSION CORROSION BEHAVIOR MODULUS
ISSN号0022-2461
DOI10.1007/s10853-020-04577-8
文献子类期刊论文
英文摘要Nuclear graphite has been used in nuclear reactors for almost 80 years, its material behavior after oxidation and irradiation is still not fully understood. In this paper, an old question of why the oxidation has a considerable effect on Young's modulus but not on the coefficient of thermal expansion (CTE) is tried to be answered. The multi-scale finite-element method was used to analyze CTE dependence on various porosities, pore shape ratios and pore arrangements. The numerical results suggested that these factors have no significant influence on the CTE. Three different types of nuclear graphite samples were thermally oxidized at 525 degrees C. The microstructures of the graphite samples before and after oxidation were observed by using a laser scanning confocal microscope. The changes in sample volume, weight loss and CTE were measured after each oxidation period. The experimental results suggested that thermal oxidation at 525 degrees C was controlled by the in-pore diffusion-controlled regime and weight losses of up to 30% had no significant influence on CTE.
语种英语
源URL[http://ir.sinap.ac.cn/handle/331007/33192]  
专题上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位1.Chinese Acad Sci, Div Mat Res, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
2.Wuhan Univ, Dept Radiat Oncol, Renmin Hosp, Wuhan 430060, Peoples R China
推荐引用方式
GB/T 7714
Yang, X,Wang, X,Tsang, DKL. The effect of thermal oxidation on the coefficient of thermal expansion of nuclear graphite[J]. JOURNAL OF MATERIALS SCIENCE,2020,55(18):7805-7815.
APA Yang, X,Wang, X,&Tsang, DKL.(2020).The effect of thermal oxidation on the coefficient of thermal expansion of nuclear graphite.JOURNAL OF MATERIALS SCIENCE,55(18),7805-7815.
MLA Yang, X,et al."The effect of thermal oxidation on the coefficient of thermal expansion of nuclear graphite".JOURNAL OF MATERIALS SCIENCE 55.18(2020):7805-7815.

入库方式: OAI收割

来源:上海应用物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。