期刊
APPLIED THERMAL ENGINEERING
卷 143, 期 -, 页码 621-629出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2018.07.143
关键词
Porous wick; Nanostructures; Dealloying; Capillary performance
资金
- open fund of Hubei key laboratory of mechanical transmission and manufacturing engineering in Wuhan University of Science and Technology [2017A05]
- Innovation Project of Graduate School of South China Normal University
- National Natural Science Foundation of China [51405166, 201711530647]
- Natural Science Foundation of Guangdong Province [2016A030310438]
- Guangdong Innovative Research Team Program [2013C102]
- Science and technology project of Guangdong Province [2016B090909001]
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology [2017B030301007]
- Guangzhou Key Laboratory of Electronic Paper Displays Materials and Devices [201705030007]
- MOE International Laboratory for Optical Information Technologies
- 111 Project
In this study, a new multi-scale composite porous wick (MCPW) is proposed for the loop heat pipe to guarantee the thermal reliability of the microelectronics packages. The MCPW, which is featured with the nanostructures distributed on the sintered copper powders, can effectively enhance the capillary performance through modifying the properties of the copper powders. In this study, a number of MCPWs were developed by the sintering and alloying-dealloying treatment. Based on the infrared radiation (IR) thermal imaging method, the capillary rate-of-rise tests were used to the evaluate the capillary pumping performance, and the effects of the porous substrate and nanostructures were investigated in detail. The results indicated that morphologies of the copper powders, including powder size and powder type, would influence the capillary performance. The larger powder size and irregular type were better for liquid rise. Meanwhile, nanostructures on the powder surface played a dominant role in forming the hydrophilic surface on the copper powders, which could achieve the higher capillary height and rising velocity of working fluid for the wick. The optimum choice for the nanostructures formation was NaOH solution under the corrosive time 24 h.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据