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首页> 外文期刊>Journal of Electronic Packaging >Investigation on the Optimized Binary and Ternary Gallium Alloy as Thermal Interface Materials
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Investigation on the Optimized Binary and Ternary Gallium Alloy as Thermal Interface Materials

机译：优化的二元和三元镓合金作为热界面材料的研究

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摘要

This work presents an experimental study to enhance the thermal contact conductance of high performance thermal interface materials (TIMs) using gallium alloy. In this experiment, the gallium alloy-based TIMs are synthesized by a micro-oxidation reaction method, which consists of gallium oxides (Ga_2O_3) dispersed uniformly in gallium alloys. An experimental apparatus is designed to measure the thermal resistance across the gallium alloy-based TIMs under steady-state conditions. The existence of Ga_2O_3 can effectively improve the wettability of gallium alloys with other materials. For example, they have a better wettability with copper and anodic coloring 6063 aluminum-alloy without any extrusion between the interface layers. Gallium binary alloy-based TIMs (GBTIM) or ternary alloy based-TIMs (GTTIM) are found to increase the operational temperature range comparing with that of the conventional thermal greases. The measured highest thermal conductivity is as high as 19.2 Wm~(-1)K~(-1) for GBTIM at room temperature. The wide operational temperature, better wettability, and higher thermal conductivity make gallium alloy-based TIMs promising for a wider application as TIMs in electronic packaging areas. The measured resistance is found to be as low as 2.2 mm~2 KW~(-1) for GBTIM with a pressure of 0.05MPa, which is much lower than that of the best commercialized thermal greases. In view of controlling pollution and raw materials wasting, the gallium alloy-based TIMs can be cleaned by 30% NaOH solution, and the pure gallium alloys are recycled, which can satisfy industrial production requirements effectively.
机译：这项工作提出了一项实验研究，以增强使用镓合金的高性能热界面材料（TIM）的热接触电导率。在该实验中，通过微氧化反应方法合成了基于镓合金的TIM，该方法由均匀分布在镓合金中的氧化镓（Ga_2O_3）组成。设计了一种实验设备，以测量稳态条件下整个基于镓合金的TIM的热阻。 Ga_2O_3的存在可以有效提高镓合金与其他材料的润湿性。例如，它们对铜和阳极着色6063铝合金具有更好的润湿性，而界面层之间没有任何挤压。与传统的导热油脂相比，发现基于镓二元合金的TIM（GBTIM）或基于三元合金的TIM（GTTIM）可以增加工作温度范围。在室温下，GBTIM的最高导热系数高达19.2 Wm〜（-1）K〜（-1）。较宽的工作温度，更好的润湿性和更高的导热性使基于镓合金的TIM有望在电子封装领域中作为TIM广泛应用。对于压力为0.05MPa的GBTIM，测得的电阻低至2.2 mm〜2 KW〜（-1），远低于最佳商业导热油脂的电阻。考虑到控制污染和原材料浪费，可以用30％NaOH溶液清洗镓合金基TIMs，并对纯镓合金进行回收利用，可以有效满足工业生产要求。

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