真空退火制备铝基合金及其水解产氢性能研究  

Research on Preparation of Al-based Alloy by Vacuum Annealing and Performane of Hydrogen Generation

作　　者：周向阳[1] 杨焘[1] 王辉[1] 

机构地区：[1]中南大学冶金与环境学院,湖南长沙410083

出　　处：《热加工工艺》2017年第10期63-66,共4页Hot Working Technology

基　　金：国家自然科学基金项目(51304254)

摘　　要：利用易拉罐真空退火制备了铝基合金。发现合金表面存在着许多纳米结构的枝晶,其主要成分是镁、铟、锡和铝,这些枝晶体相互交错构成多层网状结构,能增加合金与水的接触面积,有利于合金水解产氢。分别控制了合金制备过程中的保温时间、合金成分和表层塑料,并利用排水法进行产氢性能测试,以期找到最佳条件。结果表明:保温时间为3 h,成分为93wt%Can-4.2wt%Ga-2.1wt%In-0.7wt%Sn的合金产氢性能最佳,最大产氢量为1030 mL·g^(-1),最大产氢速率710 mL·min^(-1)·g^(-1)。Al-based alloy was prepared by aluminum beverage cans by vacuum annealing. Lots of nano-dendrite crystals appear on the surface of the alloy, and their major components are Mg, In, Sn and A1. The crystals cross connection between each other constitute a multi-layer mesh structure, which can increase the contact areas of alloy and water and is beneficial for hydrogen generation from alloy. In order to fred out the optimum conditions,the holding time, alloy composition and surface plastic in the preparation of Al-based alloy were controlled, and the hydrogen generation performance was tested by drainage method .The results show that holding for 3h, the alloy with the composition of 93wt%Can-4.2wt%Ga-2.1wt%In-0.7wt%Sn has the best hydrogen generation properties, the maximum capacity of hydrogen generation is 1030 mL·g^-1, and the maximum rate of hydrogen generation is 710 mL·min^-1·g^-1.

关 键 词：易拉罐 真空退火 铝基合金 产氢 

分 类 号：TG146.21[一般工业技术—材料科学与工程]