Orientation independent heat transport characteristics of diamond/copper interface with ion beam bombardment
Orientation independent heat transport characteristics of diamond/copper interface with ion beam bombardment
复制标题
离子束轰击金刚石/铜界面的方向独立热传输特性
DOI：
10.1016/j.actamat.2021.117283
复制
发表时间：
2021-09
期刊：
影响因子：
9.4
通讯作者：
Tongxiang Fan
中科院分区：
文献类型：
--
作者：
Kunming Yang;Zhongyin Zhang;Haohao Zhao;Bihuan Yang;Boan Zhong;Chen Naiqi;Jian Song;Chu Chen;Dawei Tang;Jie Zhu;Yue Liu;Tongxiang Fan
金刚石/铜（Dia/Cu）复合材料具有较高的热导率（k）和合适的热膨胀系数（CTE），作为先进的热管理材料受到广泛关注，但同时也存在边界热导率（G）低的问题。这是因为在金属/非金属界面复杂的能量载体行为。虽然传统的碳化物形成中间层可以作为声匹配的桥梁，晶体取向仍然是至关重要的影响Dia/Cu界面的热传输特性。在这项工作中，理论计算和时域热反射（TDTR）的结果显示两个不同的G（100）和（111）Dia/Cu界面。然后，我们采用一种易于控制的离子束轰击技术来降低取向相关的G，观察到两种不同的趋势：（1）当t30 min时，G随t的增加而降低;我们的微观结构和表面电位分析表明，sp3到sp2杂化和纳米级无定形碳（a-C）层在金刚石表面的形成。Cu和a-C中的电子之间的耦合提供了额外的热传输路径，然而，当连续增加离子轰击时间时，界面缺陷散射变得占主导地位。本研究结果可能提供更多的见解，以了解在金属/非金属界面的取向依赖的热传输机制。
Owing to high thermal conductivity ( k ) and appropriate coefficient of thermal expansion (CTE), Diamond/copper (Dia/Cu) composites have attracted extensive attention as advanced thermal management materials, but also suffered with low thermal boundary conductance ( G ). This is because complex energy carrier behaviors at metal/nonmetal interfaces. Although conventional carbide forming interlayers may serve as acoustic matching bridge, crystallographic orientation is still critical to influence heat transport characteristics of Dia/Cu interface. In this work, both theoretical calculations and time-domain thermoreflectance (TDTR) results revealed two distinct G of (100) and (111) Dia/Cu interfaces. We then applied an easy-controlled ion-beam bombardment technique to reduce the orientation dependent G , and two different trends are observed with ion-bombardment time ( t ): (1) when t 30 min, G decreases with increasing t . Our microstructural and surface potential analysis suggests sp 3 -to-sp 2 hybridization and formation of nanoscale amorphous carbon (a–C) layer at the diamond surface. The coupling between electrons in Cu and a–C provides an additional heat transport pathway, however, the interfacial defect scattering becomes dominant when continuously increasing ion-bombardment time. The present findings may provide more insight to understand the orientation dependent heat transport mechanisms at metal/nonmetal interfaces.
登录
查看更多内容
通过时域热反射测量铜/金刚石界面的钼层间介导的热导
DOI：
10.1016/j.compositesa.2020.105921
发表时间：
2020-08
期刊：
Composites Part A: Applied Science and Manufacturing
影响因子：
--
作者：
Chang Guo;Sun Fangyuan;Wang Luhua;Zhang Yin;Wang Xitao;Wang Jinguo;Kim Moon J.;Zhang Hailong
通讯作者：
Zhang Hailong
Si(100)基体上溅射Mo中间层对热丝化学气相沉积金刚石膜的影响
影响因子：
5.4
作者：
Li, Jie;Zhang, D.;Li, Zhou;Yu, Z. M.
通讯作者：
Yu, Z. M.
影响因子：
10.9
作者：
Bin Xu;S. Hung;Shiqian Hu;Cheng Shao;Rulei Guo;Junho Choi;T. Kodama;Fu-Rong Chen;J. Shiomi
通讯作者：
Bin Xu;S. Hung;Shiqian Hu;Cheng Shao;Rulei Guo;Junho Choi;T. Kodama;Fu-Rong Chen;J. Shiomi
影响因子：
3.7
作者：
Gundrum, BC;Cahill, DG;Averback, RS
通讯作者：
Averback, RS
影响因子：
4
作者：
K. Goodson;O. Käding;M. Rösner;R. Zachai
通讯作者：
K. Goodson;O. Käding;M. Rösner;R. Zachai