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

摘要本文将首次发展体机械合金化（BMA）技术来合成纳米级氢化锂。先进的热机械测试设备（Gleeble）将用于BMA过程。综合加工数据将通过计算机数据采集系统收集。这些数据将用于进一步的定量分析和对BMA过程的基本理解。将对BMA加工Li2NH的关键方面进行建模，即：(1)位错的产生和纳米级氢化物形成的动力学，以及(2)BMA加工过程中Li2NH形成的热力学。所得氢化物的晶体结构和微观结构将被充分表征。然而，由于资金限制，将不会进行系统的氢吸收和解吸所得氢化物的测试。该项目为即将到来的氢经济解决了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。

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.