氧化铝纳米流体对铝和铜的射流冲击效应

IF 1.5 Q3 ENGINEERING, MECHANICAL
G. Molina, Fnu Aktaruzzaman, Whitney Stregles, V. Soloiu, Mosfequr Rahman
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引用次数: 17

摘要

纳米流体是纳米级粉末悬浮液,因其增强的热传输特性而引起人们的兴趣。它们被研究为普通冷却流体的有希望的替代品,但纳米流体对冷却系统材料的三生物学效应在很大程度上是未知的。作者开发了一种方法,利用射流对典型冷却系统材料的冲击来测试这种影响。这项工作介绍了作者对典型纳米流体(2%体积的氧化铝纳米粉末在乙二醇水溶液中)的相互作用的研究,该纳米流体与铝和铜样品碰撞长达112小时的测试。通过粗糙度测量和光学显微镜研究来评估表面变化。对比粗糙度表明,乙二醇和水的参考冷却液及其含2%氧化铝的纳米流体对铝的粗糙度都有变化(即使是在最短的3小时测试中),但两者之间的粗糙度没有显著差异。铜的粗糙度没有明显的变化。然而,显微镜观察显示,纳米流体及其基液对铝和铜的表面修饰不同。讨论了早期侵蚀的可能机制。这些研究为测试纳米流体对冷却系统材料的影响提供了合适的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Jet-Impingement Effects of Alumina-Nanofluid on Aluminum and Copper
Nanofluids are nanosize-powder suspensions that are of interest for their enhanced thermal transport properties. They are studied as promising alternatives to ordinary cooling fluids, but the tribiological effects of nanofluids on cooling-system materials are largely unknown. The authors have developed methodology that uses jet impingement on typical cooling-system materials to test such effects. The work is presented of the authors’ research on the interactions of a typical nanofluid (2% volume of alumina nanopowders in a solution of ethylene glycol in water) which is impinged on aluminum and copper specimens for tests as long as 112 hours. The surface changes were assessed by roughness measurements and optical-microscope studies. Comparative roughness indicate that both the reference cooling fluid of ethylene glycol and water and its nanofluid with 2% alumina produce roughness changes in aluminum (even for the shortest 3-hour test), but no significant roughness differences were observed between them. No significant roughness changes were observed for copper. Microscopy observations, however, show different surface modifications in both aluminum and copper by both the nanofluid and its base fluid. The possible mechanisms of early erosion are discussed. These investigations demonstrate suitable methods for the testing of nanofluid effects on cooling system-materials.
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来源期刊
Advances in Tribology
Advances in Tribology ENGINEERING, MECHANICAL-
CiteScore
5.00
自引率
0.00%
发文量
1
审稿时长
13 weeks
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