Research Initiation Award: Single Particle Studies of Particle Morphology Evolution During Spray Processing of Inorganic Materials
研究启动奖:无机材料喷涂过程中颗粒形态演化的单颗粒研究
基本信息
- 批准号:9409394
- 负责人:
- 金额:$ 10万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:1994
- 资助国家:美国
- 起止时间:1994-07-01 至 1997-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
ABSTRACT Timothy Ward CTS-9509394 The objectives of this research are: (1) to advance the understanding of the physical and chemical processes which govern the particle morphology (e.g. dense, hollow particles or porous) and microstructure (e.g. find-grained or single crystal) of inorganic (ceramic or metal) powders produced by spray processes, and (2) to utilize that understanding to develop and test strategies for producing desired, or avoiding undesired, morphologies for several representative materials and precursor types. The basic experimental approach will be to utilize an electrodynamic balance to levitate individual solution precursor particles, and then observe the morphology evolution of the individual particle as the temperature and/or humidity are changed in a controlled fashion. As the temperature is changed (up to 800{SYMBOL 176 \f "Symbol"}C or higher in some cases), solvent evaporation, precursor decomposition, gas evolution, melting, sintering, evaporation/condensation and other processes contribute to the final morphology and microstructure. Morphology evolution will be followed visually using a video camera and light scattering, and mass changes will be monitored using a video camera and light scattering, and mass changes will be monitored using the particle levitation voltage. Both single-phase and multicomponent/multiphase particles will be investigated utilizing precursors which have been reported to yield different particle morphologies in powder synthesis by spray pyrolysis. Specifically, metallic Ag and zirconia will be studied using nitrate, chloride, organometallic and colloidal precursors. Metal/ceramic composite particles (zirconia/silver) and multicomponent mixtures containing a volatile component (PbO) will be investigated. The results of this project will enable better control over particle characteristics in materials produced by spray processes. Inorganic materials which might be good candidates for production by spray processes include: elec tronic ceramics such as superconductors and ferroelectrics, fullerenes, nanophase materials and composites, and metal powders. ***
摘要Timothy Ward CTS-9509394 本研究的目标是:(1)提高对控制颗粒形态的物理和化学过程的理解(例如致密、中空颗粒或多孔)和微观结构(如细晶粒或单晶)无机物的(陶瓷或金属)粉末,以及(2)利用这种理解来开发和测试用于生产期望的,或避免不希望的形态。 基本的实验方法将是利用电动平衡来悬浮各个溶液前体颗粒,然后观察随着温度和/或湿度以受控方式改变的各个颗粒的形态演变。 随着温度的变化(在某些情况下高达800{SYMBOL 176 \f“}C或更高),溶剂蒸发、前体分解、气体析出、熔化、烧结、蒸发/冷凝和其他过程有助于最终的形态和微观结构。 使用摄像机和光散射目视跟踪形态演变,使用摄像机和光散射监测质量变化,使用颗粒悬浮电压监测质量变化。 单相和多组分/多相颗粒将利用前体进行研究,这些前体已被报道在粉末合成中通过喷雾热解产生不同的颗粒形态。 具体而言,金属银和氧化锆将使用硝酸盐,氯化物,有机金属和胶体前体进行研究。 将研究金属/陶瓷复合颗粒(氧化锆/银)和含有挥发性组分(PbO)的多组分混合物。 该项目的结果将能够更好地控制喷涂工艺生产的材料中的颗粒特性。 可能是通过喷涂工艺生产的良好候选者的无机材料包括:电子陶瓷,如超导体和铁电体,富勒烯,纳米相材料和复合材料,以及金属粉末。 ***
项目成果
期刊论文数量(0)
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会议论文数量(0)
专利数量(0)
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Timothy Ward其他文献
UTILIZATION OF COMPLETE VS. LIMITED TRANSTHORACIC ECHOCARDIOGRAPHY: AN OPPORTUNITY FOR COST SAVINGS IN THE ERA OF VALUE BASED CARE
- DOI:
10.1016/s0735-1097(20)32408-6 - 发表时间:
2020-03-24 - 期刊:
- 影响因子:
- 作者:
Timothy Ward;Deyu Sun;Lucas Oliveira;Roberto Lang;Abdulrahman Dia;Natasha Markuzon;R. Parker Ward - 通讯作者:
R. Parker Ward
Surgical Correction of Myelomeningocele Scoliosis: A Critical Appraisal of Various Spinal Instrumentation Systems
脊髓脊膜膨出脊柱侧凸的手术矫正:对各种脊柱器械系统的批判性评估
- DOI:
10.1097/01202412-198909030-00002 - 发表时间:
1989 - 期刊:
- 影响因子:1.7
- 作者:
Timothy Ward;D. Wenger;J. Roach - 通讯作者:
J. Roach
Refined methodology for quantifying emPseudomonas aeruginosa/em virulence using emGalleria mellonella/em
使用大蜡螟量化铜绿假单胞菌毒力的优化方法
- DOI:
10.1128/spectrum.01666-24 - 发表时间:
2024-12-27 - 期刊:
- 影响因子:3.800
- 作者:
Christopher M. R. Axline;Travis J. Kochan;Sophie Nozick;Timothy Ward;Tania Afzal;Issay Niki;Sumitra D. Mitra;Ethan VanGosen;Julia Nelson;Aliki Valdes;David Hynes;William Cheng;Joanne Lee;Prarthana Prashanth;Timothy L. Turner;Nathan B. Pincus;Marc H. Scheetz;Kelly E. R. Bachta;Alan R. Hauser - 通讯作者:
Alan R. Hauser
Integrating management of marine activities in Australia
澳大利亚海洋活动的综合管理
- DOI:
10.1016/j.ocecoaman.2022.106465 - 发表时间:
2023-03-01 - 期刊:
- 影响因子:5.400
- 作者:
Robert L. Stephenson;Alistair J. Hobday;Ian Butler;Toni Cannard;Mel Cowlishaw;Ian Cresswell;Christopher Cvitanovic;Jon C. Day;Kirstin Dobbs;Leo X.C. Dutra;Stewart Frusher;Maree Fudge;Beth Fulton;Bronwyn M. Gillanders;Natalie Gollan;Marcus Haward;Trevor Hutton;Alan Jordan;Jan McDonald;Catriona Macleod;Timothy Ward - 通讯作者:
Timothy Ward
Timothy Ward的其他文献
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{{ truncateString('Timothy Ward', 18)}}的其他基金
Group Travel Support for the 10th International Conference on Inorganic Membranes in Tokyo, Japan
为日本东京第十届国际无机膜会议提供团体旅行支持
- 批准号:
0813521 - 财政年份:2008
- 资助金额:
$ 10万 - 项目类别:
Standard Grant
NIRT: Nanostructural Engineering of Complex Functional Particles
NIRT:复杂功能颗粒的纳米结构工程
- 批准号:
0210835 - 财政年份:2002
- 资助金额:
$ 10万 - 项目类别:
Standard Grant
Aerosol Processing of Structured Mesoporous Particles and Particle Coatings
结构化介孔颗粒和颗粒涂层的气溶胶处理
- 批准号:
9812899 - 财政年份:1998
- 资助金额:
$ 10万 - 项目类别:
Standard Grant
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