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.

磁控溅射已用于通过用氧化锌（ZnO）纳米粒子涂覆泡沫铜的表面来制备用于热管的金属泡沫芯。表征并测试了主要性能，包括微观外观，接触角和毛细管性能以及金属泡沫芯的沸腾传热性能。结果表明，与光滑的铜相比，低PPI（每英寸的孔数）的铜泡沫，例如30或70 PPI，可以直接提高沸腾传热性能，而110 PPI的铜泡沫却不能。有利的。另外，进行溅射时间的影响。经过我们的磁控溅射12小时后，30 PPI泡沫铜芯的传热和传质性能显着提高。