无氧铜冲击熔化温度的辐射法测量

张凌云; 戴诚达; 许灿华; 谭华

doi:10.11858/gywlxb.2005.04.015

无氧铜冲击熔化温度的辐射法测量

doi: 10.11858/gywlxb.2005.04.015

中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室，四川绵阳 621900

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通讯作者:
张凌云

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出版历程
- 收稿日期: 2004-05-08
- 修回日期: 2004-08-01
- 发布日期: 2005-12-05

Melting Temperatures of OFHC Copper under Shock Compression Measured by Optical Radiometry Techniques

Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, CAEP, Mianyang 621900, China

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Corresponding author: ZHANG Ling-Yun

摘要

摘要: 在发生冲击熔化的情况下，金属样品/窗口界面压力下的熔化温度与卸载温度数值相等，且十分接近于界面温度值。根据这一结论，利用二级轻气炮加载手段和光辐射法测温技术，用氟化锂（LiF）单晶作透明窗口，获得了110~140 GPa压力范围内无氧铜的熔化温度。实验表明，无氧铜的高压熔化温度数据与文献发表的无氧铜高压声速实验结果是一致的，铜的高压熔化规律可用Lindemann熔化定律近似描述。采用的熔化温度测量方法不必反演出冲击温度，简化了冲击熔化温度的数据处理方法，为金属冲击熔化温度测量提供了一种潜在的技术途径。
- 光辐射法 /
- 界面温度 /
- 界面压力 /
- 熔化温度
Abstract: Melting temperatures of OFHC (Oxygen-Free High Conductivity) copper at pressures ranging from 110 GPa to 140 GPa were measured on a two-stage light-gas gun by optical radiometry techniques and using LiF single crystal as window, based on such a conclusion that the melting temperatures at the sample/window interface pressure is equal to the release temperature, and close to the interfacial temperature if the OFHC copper sample is initially shocked or released into the region adjacent to the liquidus. The obtained data are consistent with the experimental results of high-pressure sound velocity measurements and theoretical predictions, and the melting behavior of OFHC copper at high pressure can be approximately described with Lindemann melting law. The method for melting temperature measurements we proposed in this paper avoided derivation of Hugoniot temperature, which simplified the determination of melting temperature, and provided a potential approach for melting temperature measurements of metals.
- optical radiometry technique /
- interfacial temperature /
- interfacial pressure /
- melting temperature

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参考文献(21)

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