| 镀铜碳纤维对粉末冶金泡沫铝稳定性的影响 |
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| 引用本文： | 王磊,姚广春,罗洪杰,陈培红.镀铜碳纤维对粉末冶金泡沫铝稳定性的影响[J].功能材料,2010,41(3). |
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| 作者姓名： | 王磊 姚广春 罗洪杰 陈培红 |
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| 作者单位： | 东北大学,材料与冶金学院,教育部材料先进制备技术工程研究中心,辽宁,沈阳,110004 |
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| 基金项目： | 国家高技术研究发展计划(863计划)资助项目(2008AA03Z512);;国家自然科学基金资助项目(50774021) |
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| 摘 要： | 以工业酒精为分散剂,采用搅拌法将0.7%(体积分数)含量的短Cf均匀分散到可发泡前驱体的混合物中,并成功制备了高稳定性的泡沫铝材料。利用300dpi扫描仪、SEM和EDX,结合液态金属泡沫排液模型和Plateau边界与薄膜之间压差对粉末冶金泡沫铝的泡沫稳定性进行了研究。结果表明,短Cf改善了同铝熔体之间的润湿性,并广泛分布于Plateau边界和泡壁内以及泡孔内表面上;面扫描中的Cu元素分布均匀,没有出现CuAl2脆性相;短Cf的添加增加了熔体的表观粘度,因此减小了泡壁变薄速率和液态泡沫流动速率;通过在短Cf长度方向上改变Plateau边界和泡壁薄膜的曲率半径,减小了二者之间的压差。对于粉末冶金泡沫铝而言,短Cf是一种有效的外加稳定剂。
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| 关 键 词： | 泡沫铝 粉末冶金 镀铜碳纤维 颗粒稳定 压制压强 |
Effect of copper-coated carbon fibers on foam stability of Al foams made by PM route |
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| WANG Lei,YAO Guang-chun,LUO Hong-jie,CHEN Pei-hong.Effect of copper-coated carbon fibers on foam stability of Al foams made by PM route[J].Journal of Functional Materials,2010,41(3). |
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| Authors: | WANG Lei YAO Guang-chun LUO Hong-jie CHEN Pei-hong |
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| Affiliation: | Engineering and Researching Center of Advanced Preparation Technology of Materials;Ministry of Education;School of Materials and Metallurgy;Northeastern University;Shenyang 110004;China |
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| Abstract: | Short copper-coated carbon fibers with the content of 0.7vol% were dispersed uniformly into the mixture of foamable precursors using industrial alcohol as dispersant by stirring method and Al foams were also prepared.Connecting with the drainage model for liquid metal foams and the difference between Plateau borders and films,foam stability was investigated using the scanner with 300dpi,SEM and EDX.The results showed wetting behaviors with Al melt were improved due to short Cf,and short Cf were located into... |
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| Keywords: | aluminum foams powder metallurgy copper-coated carbon fibers particle stability pressing pressures |
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