Performance Characteristics of the Metal Foam Wick Prepared by Magnetron Sputtering Method
- 1 October 2021
- journal article
- research article
- Published by American Institute of Aeronautics and Astronautics (AIAA) in Journal of Thermophysics and Heat Transfer
- Vol. 35 (4), 669-676
- https://doi.org/10.2514/1.t6039
Abstract
The magnetron sputtering has been used to prepare metal foam wicks for heat pipes by coating the surface of copper foam with zinc oxide (ZnO) nanoparticles. The main properties, including microscopic appearance, contact angle, and capillary performance, as well as the boiling heat transfer performance of the metal foam wicks, are characterized and tested. The results indicate that, compared with the smooth copper, the low PPI (the number of pores per inch) copper foams, for example, 30 or 70 PPI, can directly enhance the boiling heat transfer performance, whereas the 110 PPI copper foam is not conducive. In addition, the effect of sputtering time was conducted. After 12 h ours of magnetron sputtering, the heat and mass transfer performance of the 30 PPI copper foam wick improves significantly. Its wick surface changes from hydrophobic to hydrophilic, the maximum wall superheat reduces by 11.11 K, and the critical heat flux and maximum heat transfer coefficient increase by 29.35% and 80.14%, respectively.Keywords
Funding Information
- National Natural Science Foundation of China (51806100)
- The startup foundation for introduced talents of Nanjing Tech University
- Major Projects of Natural Science Research in Jiangsu Higher Education Institutions (17KJA470004)
- Natural Science Foundation of Jiangsu Province (BK20180706)
This publication has 31 references indexed in Scilit:
- Thickness effect on pool boiling heat transfer of trapezoid-shaped copper foam finsApplied Thermal Engineering, 2013
- Pool boiling heat transfer on open-celled metallic foam sintered surface under saturation conditionInternational Journal of Heat and Mass Transfer, 2011
- Flow boiling in constructal tree-shaped minichannel networkInternational Journal of Heat and Mass Transfer, 2011
- Pool boiling heat transfer on copper foam covers with water as working fluidInternational Journal of Thermal Sciences, 2010
- Magnetron sputtering – Milestones of 30 yearsVacuum, 2010
- Effect of sputtering power on surface topography of dc magnetron sputtered Ti thin films observed by AFMApplied Surface Science, 2008
- Pool boiling heat transfer of ultra-light copper foam with open cellsInternational Journal of Multiphase Flow, 2008
- Parametric analysis of loop heat pipe operation: a literature reviewInternational Journal of Thermal Sciences, 2007
- Loop heat pipesApplied Thermal Engineering, 2005
- Thermophysical properties of high porosity metal foamsInternational Journal of Heat and Mass Transfer, 2002