张建斌,焦凯,高计计,容煜,石玗.海水制氢Al-Mg-Ga-Sn合金的研究[J].稀有金属材料与工程,2020,49(10):3582~3589.[Zhang jianbin,Jiao kai,Gao jiji,Rong yu,Shi yu.Hydrogen Production Behavior of Al-Mg-Ga-Sn Alloy in Seawater[J].Rare Metal Materials and Engineering,2020,49(10):3582~3589.]
海水制氢Al-Mg-Ga-Sn合金的研究
投稿时间:2019-11-07  修订日期:2019-11-18
中文关键词:  铝合金  降解  显微组织  腐蚀形貌
基金项目:国家自然科学(51561021),甘肃省基础研究创新群体(17JR5RA107)
中文摘要:
      采用铸造法制备6种Al-Mg-Ga-Sn合金。研究该类合金在模拟海水(3.5%NaCl)溶液中,30℃、50℃、70℃和90℃下的产氢行为,定量分析产氢速率、产氢量、能量密度和转化率。从组织结构和电化学角度进行了定性分析。采用XRD结合SEM分析发现:Al-Mg-Ga-Sn合金主要组成相与Al/Ga比值有关,Al/Ga=17/1合金有Alss、Mg2Sn;Al/Ga≤14/1合金有Alss、Mg2Sn和Ga5Mg2;Al-Mg-Ga-Sn合金/海水反应产物除NaCl外,30℃~70℃时产物为Alss、Mg2Sn和Al(OH)3;90℃时产物为Alss和AlO(OH)。室温下,Al-Mg-Ga-Sn合金在3.5%NaCl溶液中的极化电阻随Al/Ga比值增大逐渐增大;且腐蚀电流与组织结构相关。在90℃,Al/Ga=8/1时,产氢速率19.36mL/(min?g),产氢量1.156×103mL/g,能量密度3.515×1010J/m3,转换率达97.6%。
Hydrogen Production Behavior of Al-Mg-Ga-Sn Alloy in Seawater
英文关键词:aluminum  alloy, simulated  seawater, hydrogen  production, corrosion  current
英文摘要:
      Al-Mg-Ga-Sn alloys with six different Al/Ga weight ratio were prepared by casting. The hydrogen production behavior of these alloys in simulated seawater (3.5% NaCl) solution at 30 ° C, 50 ° C, 70 ° C and 90 ° C was investigated, respectively, where quantitative analysis of hydrogen production rate, hydrogen yield, energy density and conversion rate, and qualitative analysis of microstructure and electrochemical performance were conducted. XRD analysis combined with SEM revealed that composition phase of Al-Mg-Ga-Sn alloys are related to the Al/Ga weight ratio. If Al/Ga=17/1, Alss and Mg2Sn dominate; if Al/Ga≤14/1, composition phases contain Alss, Mg2Sn and Ga5Mg2. In addition to NaCl, the reaction product of Al-Mg-Ga-Sn alloy/seawater include Alss、Mg2Sn and Al(OH)3 at 30 °C-70 °C; and Alss, and AlO(OH) at 90 °C. The polarization resistance of Al-Mg-Ga-Sn alloy in the 3.5%NaCl solution at room temperature gradually increases as the Al/Ga ratio increases, and the corrosion current is related to the microstructure. At 90 ° C, when Al/Ga = 8 / 1, hydrogen production rate is 19.36mL / (min ? g), hydrogen yield is 1.156×103 mL / g, energy density is 3.515×1010J / m3, and conversion rate is up to 97.6%.
作者单位E-mail
张建斌 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室 兰州 jbzhangjb@hotmail.com 
焦凯 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室 兰州  
高计计 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室 兰州  
容煜 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室 兰州  
石玗 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室 兰州  
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