亲爱的研友该休息了!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!身体可是革命的本钱,早点休息,好梦!

Mechanism and Properties of UO2–Graphene Composite Fuel Prepared by In Situ Synthesis

石墨烯 材料科学 成核 颗粒 放电等离子烧结 复合数 化学工程 烧结 晶界 复合材料 纳米技术 微观结构 化学 有机化学 工程类
作者
Xuezhi Wu,Yin Bangyue
出处
期刊:Crystals [Multidisciplinary Digital Publishing Institute]
卷期号:12 (2): 230-230 被引量:8
标识
DOI:10.3390/cryst12020230
摘要

A nucleation method based on a composite of uranium dioxide (UO2) and graphene is presented by in situ synthesis, and the relevant mechanism and fuel properties are investigated. UO2–graphene composite fuel powders containing graphene volume (2%, 4%, 6%, and 8%) were prepared using a nucleation method through the reactive deposition of uranyl nitrate and aqueous ammonia on graphene by controlling the reaction parameters. The composite fuel pellets were prepared using spark plasma sintering (SPS). The results showed that the uniformity of UO2–graphene powder prepared by in situ synthesis reached up to 96.39%. An analysis on the relevant phase structure showed that only UO2 and graphene existed in the sintered pellets at 1723 K, graphene and UO2 were not destroyed during the reaction, and the pellet densities for the in-situ synthesis were 95.56%TD, 95.32%TD, 95.08%TD, and 94.76%TD for graphene contents of 2%, 4%, 6%, and 8%, respectively. The thermal conductivities of pellets at 293 K increased by 12.27%, 20.13%, 27.47%, and 34.13%, and by 18.36%, 35.00%, 47.07%, and 58.93% at 1273 K for 2%, 4%, 6%, and 8% graphene contents, respectively. The performance of graphene in the fuel was superior at high temperatures, which overcame shortcomings due to the low thermal conductivity of UO2 at high temperatures. SEM results showed that the grain sizes of the pellets prepared by synthesis in situ were 10–30 μm, and there was no obvious pore at the grain boundary because the grains were closely bound. The graphene was uniformly coated by UO2, and the thermal conductivity of the pellets improved upon the formation of a bridging heat conduction network.
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
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
ym发布了新的文献求助10
2秒前
夏天发布了新的文献求助30
3秒前
李爱国应助ym采纳,获得10
8秒前
12秒前
平平无奇打工人完成签到 ,获得积分10
29秒前
打打应助科研通管家采纳,获得10
32秒前
47秒前
能干发卡完成签到,获得积分10
49秒前
51秒前
沉静的万天完成签到,获得积分10
54秒前
58秒前
dadabad完成签到 ,获得积分10
1分钟前
remusss应助魔幻的岂愈采纳,获得10
1分钟前
负责的紫安完成签到 ,获得积分10
1分钟前
remusss应助魔幻的岂愈采纳,获得10
1分钟前
小蘑菇应助yangyangll采纳,获得10
1分钟前
1分钟前
袋鼠发布了新的文献求助10
1分钟前
2分钟前
remusss应助魔幻的岂愈采纳,获得10
2分钟前
yushan000发布了新的文献求助10
2分钟前
2分钟前
2分钟前
惘文发布了新的文献求助10
2分钟前
Kao应助科研通管家采纳,获得10
2分钟前
852应助科研通管家采纳,获得10
2分钟前
Kao应助科研通管家采纳,获得10
2分钟前
Kao应助科研通管家采纳,获得10
2分钟前
爆米花应助科研通管家采纳,获得10
2分钟前
FashionBoy应助科研通管家采纳,获得10
2分钟前
Hello应助沉默采纳,获得10
2分钟前
remusss应助魔幻的岂愈采纳,获得10
2分钟前
2分钟前
月初发布了新的文献求助10
2分钟前
zxcxcxzcxz发布了新的文献求助10
2分钟前
2分钟前
2分钟前
2分钟前
3分钟前
3分钟前
高分求助中
(应助此贴封号)【重要!!请各用户(尤其是新用户)详细阅读】【科研通的精品贴汇总】 10000
Organic Reactions, Volume 116 1500
VALIDATION OF THE TAYLOR, ALAMEL AND VPSC MODELS FOR PLASTIC ANISOTROPY MODELING OF SHEET METALS 1000
Geist der Kunst und Kultur 1000
Middleton's Allergy Principles and Practice 10th Edition(Middleton's Allergy 2-Volume Set, 10th Edition) 1000
Resistance Spot Welding Dataset for Automobile Body-in-White Quality Analysis 748
日本現代怪異事典 副読本 700
热门求助领域 (近24小时)
化学 材料科学 医学 生物 纳米技术 工程类 有机化学 化学工程 生物化学 计算机科学 内科学 物理 复合材料 催化作用 细胞生物学 无机化学 光电子学 物理化学 电极 基因
热门帖子
关注 科研通微信公众号,转发送积分 7400514
求助须知:如何正确求助?哪些是违规求助? 9005349
关于积分的说明 19171609
捐赠科研通 7034727
什么是DOI,文献DOI怎么找? 3231002
关于科研通互助平台的介绍 2393191
邀请新用户注册赠送积分活动 2212737