闭孔泡沫铝的表面积与耐腐蚀性能
Corrosion Resistance and Surface Area of Closed-cell Aluminum
摘 要
通过建立闭孔泡沫铝表面积模型,并进行相应的腐蚀试验,研究了泡沫铝孔结构参数与表面积和耐腐蚀性能的关系.结果表明:平均孔径一定时,材料孔隙率越大,实际表面积越大;孔隙率一定时,平均孔径越小,实际表面积越大;闭孔泡沫铝的耐腐蚀性远低于实体金属,在孔径相近情况下,随孔隙率的增大,耐腐蚀性能下降;孔隙率增加,使材料耐腐蚀性能下降的根本原因是表面积的增大.
表面积
耐腐蚀性能
closed-cell aluminum
surface area
corrosion resistance
Abstract
The model of real surface area(SR) and the corrosion resistance of closed-cell foamed aluminum were studied.When the average diameter is certain,the foamed aluminum with higher porosity has larger real surface area,and when the porosity is certain,the foamed aluminum with smaller average diameter has larger real surface area.The corrosion resistance of foamed aluminum is worse than that of compact Al and decreas remarkably with the increase of the porosity when the average diameter is certain.
中图分类号 TG146
所属栏目
基金项目 973计划资助项目(2006CB601201);国家自然科学基金重点资助项目(50231010);国家自然科学基金资助项目(50471031)
收稿日期 2007/6/14
修改稿日期 2007/7/19
网络出版日期
作者单位点击查看
备注张勇明(1974-),男,吉林榆树人,讲师,博士研究生.
引用该论文: ZHANG Yong-ming,HE De-ping,SHI Guo-dong,CHU Xu-ming,DAI Ge,WANG Hui. Corrosion Resistance and Surface Area of Closed-cell Aluminum[J]. Materials for mechancial engineering, 2008, 32(4): 29～31
张勇明,何德坪,施国栋,褚旭明,戴戈,王辉. 闭孔泡沫铝的表面积与耐腐蚀性能[J]. 机械工程材料, 2008, 32(4): 29～31
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参考文献
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【3】何思渊,臧晓云,何德坪.轻质能量吸收器[J].中国科学B辑,2005,35(4):265-267.
【4】张勇明,何德坪,戴戈.稀土对泡沫铝及其合金耐腐蚀性能的影响[J].机械工程材料,2006,30(7):19-22.
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【7】Seefurth,Randall N,Sharma,Ram A.Current collectors for lithium-Silicon electrodes in lithium/iron disulfide cells[J].Journal of the Electrochemical Society,1990,137(11):3323-3333.
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【12】Zou Yi,He Deping,Jiang Jiaqiao.New type of spherical pore Al alloy foam with low porosity and high strength[J].Science in China,Series B ,Chemistry,2004,47(5):407-413.
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