用于低温应用的具有小弹性常数的高性能导热体
High Performance Heat Conductor with Small Spring Constant for Cryogenic Applications
摘要：
我们开发了一种用于低温应用的软质高导热热链。测得的最大热导率在10 K时约为18500 W/m/K。该弹性常数是室温下具有相同横截面积的单根粗丝的1/43。我们通过使用高纯度铝（99.9999%，6 N）和绞合许多直径为0.15 mm的细线来实现这些性能。还测量了残余电阻率比（RRR），并通过Wiedemann-Franz定律估计热导率。我们观察了电导率的尺寸效应，并评估了机械变形对RRR的影响。这些评估使我们能够设计一个实用的低温应用热链接。
英文摘要：
We developed a soft and high thermal conductive heat link for cryogenic applications. The measured maximum thermal conductivity was approximately 18500 W/m/K at 10 K. This spring constant was 1/43 of that of a single thick wire with the same cross-sectional area at room temperature. We realized these performances by utilizing high purity aluminum (99.9999 %, 6N) and by stranding many thin wires that are 0.15 mm in diameter. The electrical Residual Resistivity Ratio (RRR) was also measured and used to estimate the thermal conductivity by Wiedemann-Franz law. We observed the size effect on the electrical conductivity, and evaluated the effect of mechanical deformation to the RRR. These evaluations allow us to design a pragmatic heat link for cryogenic application.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
