A Mechanism of Flash Sintering of Ionic Ceramics

离子陶瓷的闪速烧结机理

基本信息

  • 批准号:
    1900876
  • 负责人:
  • 金额:
    $ 32.84万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2019
  • 资助国家:
    美国
  • 起止时间:
    2019-05-01 至 2024-04-30
  • 项目状态:
    已结题

项目摘要

NON-TECHNICAL DESCRIPTION: Traditional densification of ceramics powders into a functional component usually takes at least several hours. In 2010, a group of scientists discovered that nearly instantaneous full densification can occur (within five seconds) for certain ceramics when a high-level voltage or current pass through a compact of these ceramic powders. Thus, this rapid densification technique was named flash sintering. Since then, flash sintering has become one of the most promising techniques for ceramics processing. However, the mechanisms for this rapid sintering process are unclear; this project attempts to reveal the underlying reasons. The experimental work in this study is complemented by computational modeling, enabling a more comprehensive understanding on the rapid densification mechanisms of flash sintering of ceramic powders. This new knowledge then serves as fundamental guidance to extend the flash sintering technique into a wider range of ceramic materials. Graduate and undergraduate students (including minority and other underrepresented students) are being trained in mechanical engineering and materials science and engineering for careers in academia or high-technology manufacturing. Virtual reality technology is used to provide an immersive and interactive teaching and learning environment for materials sciences topics, and helps to educate a workforce capable of using adaptive new technologies in a rapidly changing society.TECHNICAL DETAILS: The technique, flash sintering, has demonstrated the ability to rapidly densify powder compacts of ceramic materials. In this technique, an applied electric field initiates a "flash" event and sintering occurs within a few seconds (at a threshold temperature for a given applied electric field). Although flash sintering has been observed in a variety of ceramic systems, the exact effects of electric field or current on enhancing the densification rate and influencing the microstructure evolution remain elusive, apart from the known thermal runaway Joule heating ohmic mechanisms. A series of experimental and theoretical modeling research activities are being carried out on ionic ceramic systems to clarify the thermal and non-thermal factors of electric field in the flash sintering process. In situ nanoscale imaging is used to observe the flash sintering process of yttrium-stabilized zirconia ceramic systems as a function of applied electric field, providing insights into the flash sintering mechanism. In addition, multiscale atom-to-continuum modeling is being used to simulate the flash sintering process of ionic ceramics in the presence of an electric field. The modeling is revealing the rapid densification mechanisms of flash sintering of ionic ceramics at the atomic level. Students are being educated to become experts in the practice of experimental and computational aspects of ceramic sintering technologies. As a result, graduates are being well prepared to create sustainable engineering solutions to complex problems, and thereby contributing to the cutting-edge of science and technology of ceramics processing and materials science.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
非技术描述:传统的陶瓷粉末致密化成功能组件通常需要至少几个小时。2010年,一组科学家发现,当高电压或高电流通过陶瓷粉末时,某些陶瓷几乎可以瞬间(在5秒内)发生完全致密化。因此,这种快速致密化技术被命名为闪速烧结。从那时起,闪速烧结已成为最有前途的陶瓷加工技术之一。然而,这种快速烧结过程的机制尚不清楚;这个项目试图揭示潜在的原因。本研究的实验工作与计算模型相辅相成,使我们对陶瓷粉末闪速烧结的快速致密化机理有了更全面的认识。这一新的知识可以作为基本的指导,将闪烧技术扩展到更广泛的陶瓷材料中。研究生和本科生(包括少数民族和其他代表性不足的学生)正在接受机械工程、材料科学和工程方面的培训,以适应学术界或高科技制造业的职业发展。虚拟现实技术用于为材料科学主题提供身临其境的交互式教学环境,并有助于教育能够在快速变化的社会中使用适应性新技术的劳动力。技术细节:闪蒸烧结技术已经证明了快速致密陶瓷材料粉末的能力。在这种技术中,外加电场引发“闪光”事件,烧结在几秒钟内发生(在给定外加电场的阈值温度下)。虽然在多种陶瓷体系中已经观察到闪速烧结,但除了已知的热失控焦耳加热欧姆机制外,电场或电流对提高致密率和影响微观结构演变的确切影响仍然是难以捉摸的。为了弄清闪烧过程中电场的热因素和非热因素,对离子陶瓷体系进行了一系列的实验和理论建模研究。利用原位纳米成像技术观察了钇稳定氧化锆陶瓷体系的闪烧过程随外加电场的变化,为闪烧机理的研究提供了新的思路。此外,还采用多尺度原子-连续介质模型模拟了离子陶瓷在电场作用下的闪烧过程。该模型在原子水平上揭示了离子陶瓷闪烧的快速致密化机制。学生被教育成为陶瓷烧结技术实验和计算方面的实践专家。因此,毕业生将为复杂问题创造可持续的工程解决方案做好充分准备,从而为陶瓷加工和材料科学的前沿科技做出贡献。该奖项反映了美国国家科学基金会的法定使命,并通过使用基金会的知识价值和更广泛的影响审查标准进行评估,被认为值得支持。

项目成果

期刊论文数量(8)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Effect of external electric field on diffusivity and flash sintering of 8YSZ: A molecular dynamics study
外电场对 8YSZ 扩散率和闪速烧结的影响:分子动力学研究
  • DOI:
    10.1016/j.actamat.2020.116596
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    9.4
  • 作者:
    Xu, Wenwu;Maksymenko, Andrey;Hasan, Shahrier;Meléndez, Juan J.;Olevsky, Eugene
  • 通讯作者:
    Olevsky, Eugene
Modeling zirconia sintering trajectory for obtaining translucent submicronic ceramics for dental implant applications
  • DOI:
    10.1016/j.actamat.2020.01.061
  • 发表时间:
    2020-04-15
  • 期刊:
  • 影响因子:
    9.4
  • 作者:
    Maniere, Charles;Lee, Geuntak;Olevsky, Eugene A.
  • 通讯作者:
    Olevsky, Eugene A.
An atomistic study of deformation mechanisms in metal matrix nanocomposite materials
金属基纳米复合材料变形机制的原子研究
  • DOI:
    10.1016/j.mtcomm.2022.104658
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    3.8
  • 作者:
    Hasan, Md Shahrier;Berkeley, Gregory;Polifrone, Kyrel;Xu, Wenwu
  • 通讯作者:
    Xu, Wenwu
Graphite creep negation during flash spark plasma sintering under temperatures close to 2000 °C
在接近 2000°C 的温度下闪光火花等离子烧结过程中石墨蠕变消除
  • DOI:
    10.1016/j.carbon.2020.02.027
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    10.9
  • 作者:
    Manière, Charles;Lee, Geuntak;McKittrick, Joanna;Maximenko, Andrey;Olevsky, Eugene A.
  • 通讯作者:
    Olevsky, Eugene A.
Deformation nanomechanics and dislocation quantification at the atomic scale in nanocrystalline magnesium
  • DOI:
    10.1016/j.jma.2020.08.014
  • 发表时间:
    2020-12
  • 期刊:
  • 影响因子:
    17.6
  • 作者:
    Md Shahrier Hasan;R. Lee;Wenwu Xu
  • 通讯作者:
    Md Shahrier Hasan;R. Lee;Wenwu Xu
{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Wenwu Xu其他文献

Multi-omics elucidates the kidney damage caused by aquatic Cu via the gut-kidney axis in ducks
多组学揭示了水生铜通过鸭肠道-肾脏轴对肾脏造成的损害
  • DOI:
    10.1016/j.ecoenv.2025.117844
  • 发表时间:
    2025-02-01
  • 期刊:
  • 影响因子:
    6.100
  • 作者:
    Mingcai Duan;Jinyu Liu;Zhaoxia Cai;Li Chen;Yong Tian;Wenwu Xu;Tao Zeng;Tiantian Gu;Lizhi Lu
  • 通讯作者:
    Lizhi Lu
Process comparison and performance evaluation of different entrainers for pressure swing extractive distillation refining gasoline additives based on multi-objective optimization and process intensification
  • DOI:
    10.1016/j.seppur.2024.128630
  • 发表时间:
    2025-01-19
  • 期刊:
  • 影响因子:
  • 作者:
    Wenxuan Zhao;Haiyang Cheng;Wenwu Xu;Jianhui Zhong;Chenxi Guo;Zhaoyou Zhu;Yinglong Wang;Peizhe Cui
  • 通讯作者:
    Peizhe Cui
Ti<sub>12</sub>Xe: A twelve-coordinated Xe-containing molecule
  • DOI:
    10.1016/j.physleta.2017.05.052
  • 发表时间:
    2017-08-05
  • 期刊:
  • 影响因子:
  • 作者:
    Junjian Miao;Wenwu Xu;Beien Zhu;Yi Gao
  • 通讯作者:
    Yi Gao
Toxicity effects of disinfection byproduct chloroacetic acid to emMicrocystis aeruginosa/em: Cytotoxicity and mechanisms
消毒副产物氯乙酸对铜绿微囊藻的毒性效应:细胞毒性及其机制
  • DOI:
    10.1016/j.jes.2022.09.023
  • 发表时间:
    2023-07-01
  • 期刊:
  • 影响因子:
    6.300
  • 作者:
    Jing Ye;Jiawei Ni;Fuxiang Tian;Xiyan Ji;Meifang Hou;Yuanting Li;Lei Yang;Runxiang Wang;Wenwu Xu;Liang Meng
  • 通讯作者:
    Liang Meng
Effect of fermented feed on volatile flavor of duck meat through fatty acid metabolism pathways in gut microbiota and muscle
发酵饲料通过肠道菌群和肌肉中的脂肪酸代谢途径对鸭肉挥发性风味的影响
  • DOI:
    10.1016/j.fbio.2025.106186
  • 发表时间:
    2025-04-01
  • 期刊:
  • 影响因子:
    5.900
  • 作者:
    Ligen Xu;Tingting Mao;Chunqing Jiang;Zhaoxia Cai;Tao Zeng;Yong Tian;Weifeng Feng;Lizhi Lu;Wenwu Xu
  • 通讯作者:
    Wenwu Xu

Wenwu Xu的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

相似国自然基金

FLASH放疗减弱中性粒细胞呼吸爆发调控 肝细胞Phlda3-Akt2信号轴减轻放射性肝 损伤的机制研究
  • 批准号:
  • 批准年份:
    2025
  • 资助金额:
    10.0 万元
  • 项目类别:
    省市级项目
肿瘤微环境响应型纳米材料用于增强FLASH-RT抗结肠癌效果的研究
  • 批准号:
    JCZRQN202500360
  • 批准年份:
    2025
  • 资助金额:
    0.0 万元
  • 项目类别:
    省市级项目
FLASH放射免疫的物质基础及其远隔效应的规律和机制研究
  • 批准号:
    12375334
  • 批准年份:
    2023
  • 资助金额:
    53.00 万元
  • 项目类别:
    面上项目
基于智能模糊信息处理的多元LDPC译码算法及其在Flash存储器中的应用研究
  • 批准号:
    62361003
  • 批准年份:
    2023
  • 资助金额:
    29 万元
  • 项目类别:
    地区科学基金项目
基于微介质气体电离室的X射线FLASH放射治疗剂量测量体系研究
  • 批准号:
    12375318
  • 批准年份:
    2023
  • 资助金额:
    52.00 万元
  • 项目类别:
    面上项目
质子FLASH放疗通过p53-Drp1通路介导线粒体稳态减轻肺正常组织损伤的分子机制研究
  • 批准号:
  • 批准年份:
    2022
  • 资助金额:
    30 万元
  • 项目类别:
    青年科学基金项目
FLASH光子放疗联合肿瘤免疫治疗的最适物理参量及生物机制研究
  • 批准号:
    12235004
  • 批准年份:
    2022
  • 资助金额:
    291 万元
  • 项目类别:
    重点项目
HEX-FLASH与可示踪纳米介孔药物协同治疗三阴性乳腺癌的作用和机制研究
  • 批准号:
    U2230123
  • 批准年份:
    2022
  • 资助金额:
    49.00 万元
  • 项目类别:
    联合基金项目
FLASH-RT促进树突状细胞淋巴结归巢及T细胞激活能力的效果及机制研究
  • 批准号:
    82202965
  • 批准年份:
    2022
  • 资助金额:
    20 万元
  • 项目类别:
    青年科学基金项目
FLASH光子照射调控PD-L1敲除型小鼠肠道辐射损伤的机制研究
  • 批准号:
  • 批准年份:
    2021
  • 资助金额:
    55 万元
  • 项目类别:
    面上项目

相似海外基金

Rapid manufacture of solid-state battery structures by additive manufacturing and Flash sintering
通过增材制造和闪速烧结快速制造固态电池结构
  • 批准号:
    10007480
  • 财政年份:
    2021
  • 资助金额:
    $ 32.84万
  • 项目类别:
    Collaborative R&D
Flash Sintering of SiC, Boron Carbide and Boron Carbide/SiC composites
SiC、碳化硼和碳化硼/SiC 复合材料的闪速烧结
  • 批准号:
    2483702
  • 财政年份:
    2021
  • 资助金额:
    $ 32.84万
  • 项目类别:
    Studentship
Development of Ceramic AM Method by Local Flash Sintering
局部闪速烧结陶瓷增材制造方法的发展
  • 批准号:
    19K14868
  • 财政年份:
    2019
  • 资助金额:
    $ 32.84万
  • 项目类别:
    Grant-in-Aid for Early-Career Scientists
Flash Sintering of Composite Ceramic Materials and Structures
复合陶瓷材料和结构的闪速烧结
  • 批准号:
    EP/R029873/1
  • 财政年份:
    2018
  • 资助金额:
    $ 32.84万
  • 项目类别:
    Research Grant
Flash Sintering of Multiphase Ceramics
多相陶瓷的闪速烧结
  • 批准号:
    1662791
  • 财政年份:
    2017
  • 资助金额:
    $ 32.84万
  • 项目类别:
    Standard Grant
Flash Sintering of Non-Oxide Ceramics for Armour
装甲用非氧化物陶瓷的闪速烧结
  • 批准号:
    1937671
  • 财政年份:
    2017
  • 资助金额:
    $ 32.84万
  • 项目类别:
    Studentship
Flash-sintering: its atomistic process and mechanism
闪速烧结:其原子过程和机理
  • 批准号:
    17H03394
  • 财政年份:
    2017
  • 资助金额:
    $ 32.84万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
From FAST to FLASH: Field assisted sintering of oxide ceramics with controlled electric field and current density
从FAST到FLASH:具有受控电场和电流密度的氧化物陶瓷的场辅助烧结
  • 批准号:
    319257740
  • 财政年份:
    2016
  • 资助金额:
    $ 32.84万
  • 项目类别:
    Priority Programmes
SNM: Physics Guided Innovation of Integrated Flash-Light-Sintering, Continuous Nanomaterial Synthesis and Roll-To-Roll Deposition Processes
SNM:集成闪光烧结、连续纳米材料合成和卷对卷沉积工艺的物理引导创新
  • 批准号:
    1449383
  • 财政年份:
    2014
  • 资助金额:
    $ 32.84万
  • 项目类别:
    Standard Grant
SBIR Phase I: One Step Flash-Sintering of Multilayer Structures for SOFC Below 1000°C: a New Manufacturing Paradigm for Commercial Viability
SBIR 第一阶段:1000°C 以下 SOFC 多层结构的一步闪速烧结:商业可行性的新制造范式
  • 批准号:
    1315774
  • 财政年份:
    2013
  • 资助金额:
    $ 32.84万
  • 项目类别:
    Standard Grant
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了