大尺寸金刚石激光闪射法热导率测试研究

人工晶体学报 ›› 2024, Vol. 53 ›› Issue (3): 503-510.

大尺寸金刚石激光闪射法热导率测试研究

张雅淋^1,2, 安晓明^1,2,3, 葛新岗^1,2,3, 姜龙^1,2,3, 李义锋^1,2,3

1.河北普莱斯曼金刚石科技有限公司,石家庄 050081;
2.河北省化学气相沉积金刚石重点实验室,石家庄 050081;
3.河北省激光研究所有限公司,石家庄 050081

收稿日期:2023-10-07 发布日期:2024-04-02
通信作者: 姜龙,副研究员。E-mail:jianglong@hediamond.cn
作者简介:张雅淋(1992—),女,河北省人,研究实习员。E-mail:zhangyalin@hediamond.cn
基金资助:
国家磁约束核聚变能发展研究专项资助(2019YFE03100300);河北省科学院科技计划项目重点学科提升工程资金(23A10)

Thermal Conductivity Test of Large-Size Diamond by Laser Flash Method

ZHANG Yalin^1,2, AN Xiaoming^1,2,3, GE Xingang^1,2,3, JIANG Long^1,2,3, LI Yifeng^1,2,3

1. Hebei Plasma Diamond Technology Co., Ltd., Shijiazhuang 050081, China;
2. Hebei Key Laboratory of Chemical Vapor Deposition Diamond, Shijiazhuang 050081, China;
3. Hebei Institute of Laser, Shijiazhuang 050081, China

Received:2023-10-07 Published:2024-04-02

摘要/Abstract

摘要： 为解决大尺寸金刚石热导率的测试问题,本文在耐驰LFA467激光闪射仪的基础上,设计了垂直模式和In-Plane模式的ϕ100 mm测试样品架,从理论分析和实际测试两方面证明了ϕ100 mm样品架的可行性。从理论分析结果得出,新样品架带来的样品边界条件的变化对测试结果影响不大。从实际测试结果来看,垂直模式和In-Plane模式的ϕ100 mm样品架的热导率比标准样品架的热导率分别高3.6%和6.5%,仍在可接受范围内。本文设计的ϕ100 mm样品架最大能够测试ϕ100 mm的样品,有助于保护样品的完整性,实现激光闪射法大尺寸金刚石热导率的无损测试。

关键词: 金刚石, 激光闪射法, 热导率, 大尺寸, 热扩散系数

Abstract: In order to solve the problem of thermal conductivity test of large-size diamond, the ϕ100 mm sample holder of vertical mode and In-Plane mode was designed for the NETZSCH LFA467 HyperFlash instrument. The test results of the ϕ100 mm sample holder are proved to be credible from both principle and test results. From the theoretical analysis, it is concluded that the change of sample boundary conditions brought by the new sample holder has little effect on the test results. The thermal conductivity test results of the ϕ100 mm sample holder in the In-Plane mode are 6.5% higher than that of the standard sample holder, and the thermal conductivity test results of the ϕ100 mm sample holder in the vertical mode are 3.6% higher than that of the standard sample holder. The test results are still within the acceptable range. The ϕ100 mm sample holder designed in this paper can test ϕ100 mm samples at most, which helps to protect the integrity of samples. In this paper, the non-destructive testing of thermal conductivity of large-size diamond by laser flash method is realized.

Key words: diamond, laser flash method, thermal conductivity, large-size, thermal diffusivity

中图分类号:

TQ163

张雅淋, 安晓明, 葛新岗, 姜龙, 李义锋. 大尺寸金刚石激光闪射法热导率测试研究[J]. 人工晶体学报, 2024, 53(3): 503-510.

ZHANG Yalin, AN Xiaoming, GE Xingang, JIANG Long, LI Yifeng. Thermal Conductivity Test of Large-Size Diamond by Laser Flash Method[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(3): 503-510.

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