| 引用本文: | 张星明,李言祥,刘源,张华伟.对GASARITE脱合金制备微-纳复合多孔金属的研究[J].材料科学与工艺,2013,21(4):12-17.DOI:10.11951/j.issn.1005-0299.20130403. |
| ZHANG Xing-ming,LI Yan-xiang,LIU Yuan,ZHANG Hua-wei.Fabrication of micro-nano double scale porous metal by dealloying to GASARITE[J].Materials Science and Technology,2013,21(4):12-17.DOI:10.11951/j.issn.1005-0299.20130403. |
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| 摘要: |
| Gasar工艺是一种制备规则排列微米多孔金属的定向凝固工艺,脱合金工艺是一种通过选择性溶解固溶体合金而制备无序纳米多孔金属的工艺方法,将Gasar和脱合金工艺相结合可以制备一种有序-无序结合、微米-纳米复合的特殊结构多孔金属.选择Cu-Mn二元合金为研究对象,研究了Gasar工艺参数及合金成分对定向凝固多孔Cu-Mn合金结构的影响.脱合金工艺在Gasar工艺制备的定向凝固多孔Cu-Mn合金基础上进行,分析了腐蚀温度等脱合金工艺参数对纳米多孔结构的影响.在优化的Gasar和脱合金工艺参数下,制备得到了一种特殊结构的微-纳复合多孔金属. |
| 关键词: Gasar 脱合金 定向凝固 微-纳复合多孔金属 Cu-Mn二元合金 |
| DOI：10.11951/j.issn.1005-0299.20130403 |
| 分类号: |
| 基金项目:清华大学自主交叉研究项目(2010THZ01). |
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| Fabrication of micro-nano double scale porous metal by dealloying to GASARITE |
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ZHANG Xing-ming,LI Yan-xiang,LIU Yuan,ZHANG Hua-wei
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(School of Materials Science and Engineering,Tsinghua University,Beijing 100084,China)
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| Abstract: |
| The principles of Gasar-the process for fabricating regularly aligned porous metals of micrometer pore size by directional solidification and dealloying-the process for fabricating random porous metals of nanometer pore size by selective corrosion from solid solutions were combined in this paper to create a special porous structure with a combination of regular-random pore morphology and micro-nano double scale pore size.The Cu-Mn binary alloy was selected as the base material.The Gasar process for fabricating regularly aligned porous Cu-Mn alloy with a micrometer pore size was studied.The influences of alloy composition and processing parameters on the pore structure were analyzed.Dealloying treatment was conducted to the Gasar sample of porous Cu-Mn alloy to get a nano-porous structure on its base material.The influences of etching temperature and corrosion parameters on the pore structure were studied.At optimized conditions of both Gasar and dealloying processes,a porous metal with a special structure of combined micrometer and nanometer double size scales was obtained. |
| Key words: gasar dealloying directional solidification micro-nano porous metal Cu-Mn binary alloy |
