已入深夜,您辛苦了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!祝你早点完成任务,早点休息,好梦!

Effect of soft-mould pressing method on anisotropy of the graphitic matrix spheres: Dry-bag isostatic vs. Quasi-isostatic

热等静压 材料科学 各向异性 微观结构 石墨 热膨胀 复合材料 热导率 核石墨
作者
Zhenming Lu,Xiongfei Gao,Wenke Zhang,Jie Zhang,Xiangwen Zhou,Xiaotong Chen,Xuanke Li,Bing Liu
出处
期刊:Journal of Nuclear Materials [Elsevier BV]
卷期号:570: 153950-153950
标识
DOI:10.1016/j.jnucmat.2022.153950
摘要

The anisotropy of graphitic matrix in fuel elements for high-temperature gas-cooled reactors (HTR) has an important effect on the distribution of thermal stress and irradiation stress, which should be strictly controlled. In this study, the graphitic matrix spheres were prepared through quasi-isostatic pressing and dry-bag isostatic pressing. The anisotropy was compared from the elastic modulus, crushing load, coefficient of thermal expansion (CTE) and thermal conductivity in different directions. The causes of anisotropy were investigated from the aspects of raw material microstructure, charging, pressing, as well as heat treatment. The graphite microstructure and the preferred orientation of graphite particles in the production process were found as the main reasons for the anisotropy of thermal and mechanical properties. The dry-bag isostatic pressing method can effectively reduce anisotropy and increase the production capacity compared with the quasi-isostatic method, which is consistent with the development trends of high quality and low cost fuel elements. Internal stress simulation result of soft-mould under quasi-isostatic and dry-bag isostatic pressure. In this study, the graphitic matrix spheres were prepared through quasi-isostatic pressing and dry-bag isostatic pressing. The anisotropy was compared from the elastic modulus, crushing loading, coefficient of thermal expansion (CTE) and thermal conductivity in different directions. The causes of anisotropy were investigated from the aspects of raw material microstructure, charging, pressing, as well as heat treatment. The graphite microstructure and the preferred orientation of graphite particles in the production process were found as the main reasons for the anisotropy of thermal and mechanical properties. The dry-bag isostatic method can effectively reduce anisotropy and increase the production capacity compared with the quasi-isostatic method, which consistent with the development trends of high quality and low cost of fuel elements.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
酷波er应助与山采纳,获得10
刚刚
领导范儿应助zztt采纳,获得30
1秒前
脑洞疼应助YanZhe采纳,获得10
2秒前
ZXH完成签到,获得积分10
2秒前
mia发布了新的文献求助10
3秒前
6秒前
轻舟发布了新的文献求助10
7秒前
xiaomeng完成签到 ,获得积分10
8秒前
洋芋二号完成签到,获得积分10
8秒前
在水一方应助科研通管家采纳,获得10
11秒前
小蘑菇应助科研通管家采纳,获得10
11秒前
11秒前
今后应助科研通管家采纳,获得10
11秒前
11秒前
11秒前
11秒前
12秒前
14秒前
zz发布了新的文献求助10
16秒前
端庄的飞阳完成签到 ,获得积分10
16秒前
Captain发布了新的文献求助10
19秒前
20秒前
22秒前
姜宇航完成签到 ,获得积分10
23秒前
24秒前
白斯特发布了新的文献求助10
26秒前
藏沙完成签到 ,获得积分10
27秒前
32秒前
35秒前
米米发布了新的文献求助10
37秒前
晚意意意意意完成签到 ,获得积分10
38秒前
45秒前
46秒前
47秒前
shinysparrow应助Hung采纳,获得200
48秒前
虚幻初之发布了新的文献求助10
48秒前
清逸完成签到 ,获得积分10
51秒前
張医铄完成签到,获得积分10
51秒前
Orange应助Vivian采纳,获得10
52秒前
turbohero发布了新的文献求助10
54秒前
高分求助中
The Mother of All Tableaux Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 2400
Ophthalmic Equipment Market by Devices(surgical: vitreorentinal,IOLs,OVDs,contact lens,RGP lens,backflush,diagnostic&monitoring:OCT,actorefractor,keratometer,tonometer,ophthalmoscpe,OVD), End User,Buying Criteria-Global Forecast to2029 2000
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Cognitive Neuroscience: The Biology of the Mind (Sixth Edition) 1000
Optimal Transport: A Comprehensive Introduction to Modeling, Analysis, Simulation, Applications 800
Official Methods of Analysis of AOAC INTERNATIONAL 600
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3959928
求助须知:如何正确求助?哪些是违规求助? 3506172
关于积分的说明 11128138
捐赠科研通 3238123
什么是DOI,文献DOI怎么找? 1789535
邀请新用户注册赠送积分活动 871803
科研通“疑难数据库(出版商)”最低求助积分说明 803024