NER: Innovative Synthesis and Modeling of Nano-Hydrides by Bulk Mechanical Alloying

NER：通过块体机械合金化纳米氢化物的创新合成和建模

• 批准号: 0508205
• 负责人: Leijun Li
• 金额: --
• 依托单位: Utah State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-15 至 2007-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0508205&HistoricalAwards=false
• 关键词: NER; Innovative; Synthesis; Modeling; Nano

AbstractThe bulk mechanical alloying (BMA) will be developed for the first time for synthesizing nanoscaled Li2NH hydride. An advanced thermomechanical testing equipment (Gleeble) will be used for the BMA process. Comprehensive processing data will be collected through the computerized data acquisitions system. These data will be available for further quantitative analysis and fundamental understanding of the BMA process. The key aspects of BMA processing of Li2NH will be modeled, namely, (1) the generation of dislocations and the dynamics for nanoscale hydride formation, and (2) the thermodynamics for Li2NH formation during BMA processing. The crystal structure and microstructure of resultant hydrides will be fully characterized. However, systematic testing of hydrogen absorption and desorption of the resultant hydrides will not be conducted due to funding constraints.This project addresses a key hydrogen storage issue for the upcoming hydrogen economy. The huge potential payback justifies the significant impact of this proposal.

本文首次发展了块体机械合金化（BMA）法合成纳米级Li2NH氢化物。BMA工艺将采用先进的热机械试验设备（Gleeble）。将通过计算机化数据采集系统收集综合加工数据。这些数据将可用于进一步的定量分析和BMA过程的基本理解。将模拟Li2NH的BMA处理的关键方面，即（1）位错的产生和纳米氢化物形成的动力学，以及（2）在BMA处理期间Li2NH形成的热力学。将充分表征所得纳米晶的晶体结构和显微结构。然而，由于资金限制，将不会对所产生的氢吸收和解吸进行系统的测试。该项目解决了即将到来的氢经济的一个关键的氢储存问题。巨大的潜在回报证明了这一提议的重大影响。