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Highly thermally conductive nanocomposites synthesized by PVD for thermal management applications

机译:通过PVD合成的高度导热纳米复合材料,用于热管理应用

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Uniform Ag and Si layers were successfully prepared on the surface of graphite films (GF) to improve thermal conductivity (TC) by physical vapor deposition method (PVD). The results demonstrate that the unique cubic crystal structure of Ag layer with different deposition time show good interface bonding and no carbide product of Ag/GF composites. Meanwhile, the dense Si coating contribute to the enhancement of the thermal diffusion ability. The Ag/GF composites with the deposition time of 2 h possess the best comprehensive property with the TC of 9.93 (W/m.K), which is approximately 73.30% higher than untreated GF. The TC of Si/GF composites reach the maximum TC of 11.12 W/(m.K) and increase about 101.81% due to the nano-Si layer comparing with untreated GF. Those composites with high performance make them promising thermal management laminated materials. (C) 2020 Elsevier B.V. All rights reserved.
机译:在石墨膜(GF)表面上成功制备均匀的Ag和Si层,以通过物理气相沉积方法(PVD)来改善导热率(Tc)。 结果表明,具有不同沉积时间的Ag层的独特立方晶体结构显示出良好的界面粘合,无碳化物产物Ag / GF复合材料。 同时,致密的Si涂层有助于提高热扩散能力。 具有2小时的沉积时间的Ag / GF复合材料具有最佳综合性质,TC为9.93(W / M.K),比未处理的GF高约73.30%。 Si / GF复合材料的Tc达到11.12W /(M.K)的最大Tc,并且由于与未处理的GF相比,由于纳米Si层而增加约101.81%。 这些具有高性能的复合材料使它们具有有前途的热管理层压材料。 (c)2020 Elsevier B.v.保留所有权利。

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