Fabrication Method for Porous Metals using Ultrasonic Microbubble Generator
Fabrication Method for Porous Metals using Ultrasonic Microbubble Generator
复制标题
使用超声波微气泡发生器的多孔金属的制造方法
DOI：
10.11395/aem.4.0_22
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Toshinori MAKUTA
中科院分区：
文献类型：
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作者：
Kouyo TAMAKI;Toshinori MAKUTA
提出了一种利用超声气泡发生器向熔融金属中吹入微气泡制备低熔点合金闭孔多孔金属的新方法。由于不需要额外的材料，如增稠剂或发泡剂，因此所开发的方法比传统方法更简单，更经济。制造装置包括供气系统、温度调节器和微泡发生器；微泡发生器的超声波将注入熔融金属的气体通过空心喇叭的尖端分解成微泡。它们的低浮力导致产生的微气泡留在熔融金属中，直到它们在冷却过程中凝固。此外，在此过程中，泡沫的形成导致了闭孔结构。本研究制备的闭孔多孔金属的孔隙率大于70%。此外，所制备的多孔金属具有微孔。这项技术使多孔金属的制造比传统方法更经济、更简单，如果大规模生产成为可能，这是一种创新方法。
A novel method to fabricate closed-cell porous metals from low melting point alloys is developed by blowing microbubbles into the molten metal using an ultrasonic bubble generator. As it does not require additional materials such as thickener or foaming agents, the developed method is simpler and more economical than conventional methods. The fabrication setup consists of a gas supply system, a temperature regulator, and a microbubble generator; the ultrasonic waves of the microbubble generator break the gas injected to the molten metal through the tip of a hollow horn down into microbubbles. Their low buoyancy causes the generated microbubbles to remain in the molten metal until they are solidified during cooling. Furthermore, the formation of foams during the process resulted in a closed-cell structure. The porosity of the closed-cell porous metal fabricated in this study was found to be greater than 70%. Moreover, the porous metal which can be fabricated has micropores. This technology makes it possible to fabricate porous metals more economically and simply than conventional methods, and if mass production is possible, it is an innovative method.