Thermal conductivity of bulk nanocrystalline nickel-diamond composites produced by electrodeposition

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• 作者：Hai Jun Cho^a ; ^{haejoon.cho@mail.utoronto.ca" class="auth_mail" title="E-mail the corresponding author} ; Jason Tam^a ; Miroslavna Kovylina^a ; Young-June Kim^b ; Uwe Erb^a
• 关键词：Composite materials ; Nanostructured materials ; Thermodynamic properties ; Chemical synthesis
• 刊名：Journal of Alloys and Compounds
• 出版年：2016
• 出版时间：5 December 2016
• 年：2016
• 卷：687
• 期：Complete
• 页码：570-578
• 全文大小：1780 K

文摘

Previous research has shown that electrodeposited metal-diamond composite materials exhibit excellent mechanical properties, but their potential applications for thermal management in electronic devices have not been addressed. In contrast to common high temperature-high pressure (HTHP) methods, electrodeposition could offer a more economically viable route for making metal-diamond heat sink materials. In this study, nanocrystalline nickel-diamond composite materials were produced by electrodepositon. Using them as a prototype, the feasibility of using electrodeposited metal-diamond composite materials for heat sink applications was examined. The maximum thermal conductivity of nanocrystalline nickel-diamond composite was 200 W/mK at 61 vol% diamond, which is 2.6 times higher than 77 W/mK for pure nanocrystalline nickel. In addition, the thermal boundary conductance in the composite materials produced by electrodeposition was comparable to that previously reported for copper-diamond composite materials produced by the HTHP method. These results are a promising sign for producing electrodeposited metal-diamond composite materials with thermal conductivities high enough for heat management applications.