Novel material of hydrogen generation

A novel aluminum alloy which could react with water and generate hydrogen at room temperature was prepared via mechanical alloying (MA). The results shows that milling time, additives and mass ratio have a significant role in the hydrogen production rate. The highest hydrogen production rate of alloys reaches 95% of theoretical value. The velocity of hydrogen generation reaches more over 200 mL/min for a gram alloy. Active materials (Ga and In) included in the aluminum alloys can be recycled and used repeatedly. The hydrolysis reaction between aluminum and H₂O will take place and release a large amount of heat, which contributes to increasing the velocity of hydrogen generation. The reaction products consist of AlO(OH) and hydrogen.     

公路桥梁维修及预防性养护研究

随着社会经济的发展和进步,公路桥梁建设项目逐渐增多。为了保障公路桥梁得以安全运行,从公路桥梁维修及预防性养护的意义、要求等角度入手,深入研究公路桥梁维修及预防性养护技术,旨在为相关工作提供参考。     

TD处理热力学和动力学探讨

探讨了TD处理过程中的热力学和动力学,结果表明,在1200K条件下,碳化钒形成的自由能为-40.52 kJ/mol;在1273 K处理条件下碳化钒形成的动力学曲线方程为D=3.866!t。     

点焊电极电火花振动熔敷金属陶瓷TiC工艺研究

研究了点焊电极表面电火花振动熔敷金属陶瓷TiC涂层的影响因素和熔敷工艺参数。