许元浩,安士忠,王博,牛岚清,通迅

• 1:河南科技大学材料科学与工程学院
• 2:龙门实验室
• 3:省部共建有色金属新材料与先进加工技术协同创新中心
• 4:河南省有色金属材料科学与加工技术重点实验室

摘要(Abstract)：

研究了固溶处理、轧制和再结晶退火对Al-0.5Mg-0.08Sn-0.1Ga-0.05In合金组织和电化学性能的影响。结果表明：铸态合金主要由不规则等轴晶组成，平均晶粒尺寸为607.4μm;固溶处理后，合金的平均晶粒尺寸有所增大，第二相数量大幅减少；轧制后，合金的晶粒被拉长，平均晶粒尺寸减小至372.4μm,第二相细化，合金元素分布更加均匀；经350℃再结晶退火后，合金的平均晶粒尺寸由轧制态的372.4μm减小到41.6μm,随再结晶退火温度从350℃升高到550℃,晶粒尺寸增大到899.6μm,且第二相重新聚集长大并分布在晶界处，合金的析氢速率和自腐蚀速率下降。轧制后，合金的自腐蚀速率由铸态的1.176 mg·cm~(-2)·min~(-1)降低到0.883 mg·cm~(-2)·min~(-1),析氢速率由铸态的0.221 mL·cm~(-2)·min~(-1)降低到0.185 mL·cm~(-2)·min~(-1);与固溶态和退火态合金相比，轧制态合金的自腐蚀速率更低，放电性能更加优异，在40 mA·cm~(-2)电流密度下，能量密度达3230.61 Wh·kg~(-1),阳极利用效率高达90.71%。

关键词(KeyWords)： 铝空气电池;微观结构;自腐蚀速率;电化学性能

Abstract:

Keywords:

基金项目(Foundation): 河南省高等学校重点科研项目(18A430013)

作者(Author): 许元浩,安士忠,王博,牛岚清,通迅

DOI: 10.13289/j.issn.1009-6264.2024-0268

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