| Comparison between oxide-reduced and water-atomized copper powders used in making sintered wicks of heat pipe |
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| 作者姓名： | Liu-Ho Chiu Chang-Hui Wu Pee-Yew Lee |
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| 作者单位： | [1]Department of Materials Engineering, Tatung University, Taipei 10451, Taiwan, China [2]Institute of Materials Engineering, Taiwan Ocean University, Keelung, Taiwan, China |
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| 基金项目： | Financial support of this research by National Science Council, under contract NSC 94-2216-E-036-002 is gratefully acknowledged. |
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| 摘 要： | Oxide-reduced copper powder can be produced efficiently at low cost. The volume shrinkage, porosity, maximum pore size, permeability and thermal conductivity of wicks sintered from two oxide-reduced （OR） powders were compared with one from water-atomized （WA） powder. The green specimens were sintered at temperatures from 800 to 1000 ℃ in a tube furnace under a reduction stream of 10% hydrogen and 90% argon. The results show that the property variations of OR - 100 and WA wicks due to porosity changes have a similar tendency and range. Nine hundred degree celsius is a recommended sintering temperature for producing ideal wicks for use in heat pipes. A smaller maximum pore size can be obtained by increasing the green density.2007 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V.
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| 关 键 词： | 铜粉 多孔渗水 氧化物 热处理 |
| 收稿时间： | 25 October 2006 |
| 修稿时间： | 2006-10-252007-04-04 |
Comparison between oxide-reduced and water-atomized copper powders used in making sintered wicks of heat pipe |
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| Liu-Ho Chiu Chang-Hui Wu Pee-Yew Lee.Comparison between oxide-reduced and water-atomized copper powders used in making sintered wicks of heat pipe[J].China Particuology,2007,5(3):220-224. |
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| Authors: | Liu-Ho Chiu Chang-Hui Wu Pee-Yew Lee |
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| Institution: | a Department of Materials Engineering, Tatung University, Taipei 10451, Taiwan, China
b Institute of Materials Engineering, Taiwan Ocean University, Keelung, Taiwan, China |
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| Abstract: | Oxide-reduced copper powder can be produced efficiently at low cost. The volume shrinkage, porosity, maximum pore size, permeability and thermal conductivity of wicks sintered from two oxide-reduced (OR) powders were compared with one from water-atomized (WA) powder. The green specimens were sintered at temperatures from 800 to 1000 ?C in a tube furnace under a reduction stream of 10% hydrogen and 90% argon. The results show that the property variations of OR ? 100 and WA wicks due to porosity changes have a similar tendency and range. Nine hundred degree celsius is a recommended sintering temperature for producing ideal wicks for use in heat pipes. A smaller maximum pore size can be obtained by increasing the green density. |
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| Keywords: | Sintered wick Copper powder Porous property Oxide-reduced powder |
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