| 闭孔泡沫纯铝的导热性能 |
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| 引用本文： | 赵军,何德坪. 闭孔泡沫纯铝的导热性能[J]. 机械工程材料, 2009, 33(4): 76-78 |
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| 作者姓名： | 赵军 何德坪 |
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| 作者单位： | 南京理工大学汤山科研实验中心,江苏南京,210094;东南大学材料科学与工程系,江苏南京,210096 |
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| 摘 要： | 采用隔热测试仪研究了闭孔泡沫纯铝的孔隙率和孔径对其导热性能(导热系数)的影响.结果表明:闭孔泡沫纯铝的导热性能受传导、对流、辐射三者的综合影响;孔隙率为83.2%～91.0%的闭孔泡沫纯铝的导热系数随孔隙率的增大而减小,而孔径对导热系数的影响没有一定规律;在孔隙率为83.2%～91.0%、孔径为2.5～5.3 mm时,闭孔泡沫纯铝的导热系数在常温下为0.297～0.752 W/(m·K).
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| 关 键 词： | 闭孔泡沫纯铝 孔隙率 导热系数 |
Thermal Conductivity Property of Closed-cell Pure Aluminum Foam |
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| ZHAO Jun,HE De-ping. Thermal Conductivity Property of Closed-cell Pure Aluminum Foam[J]. Materials For Mechanical Engineering, 2009, 33(4): 76-78 |
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| Authors: | ZHAO Jun HE De-ping |
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| Affiliation: | 1.Nanjing University of Science and Technology;Nanjing 210094;China;2.Southeast University;Nanjing 210096;China |
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| Abstract: | The thermal conductivity coefficient of closed-cell pure aluminum foam was measured as a function of porosity and cell size.The results show that the thermal conductivity property of the closed-cell pure aluminum foam was influenced by conduction,convection and radiation.The thermal conductivity coefficient of closed-cell pure aluminum foam decreased with the increase of porosity,and the cell size showed no obvions influence on the thermal conductivity coefficient.The thermal conductivity coefficient of sam... |
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| Keywords: | closed-cell pure aluminum foam porosity thermal conductivity coefficient |
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