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Chinese Journal of High Pressure Physics  > 2011  >  25(5): 421-428 .
LI Jun, LI Jia-Bo, ZHOU Xian-Ming, WANG Qing-Song, DAI Cheng-Da. A Combined Technique for Measuring Hugoniot and Interfacial Temperature of Preheating Metals[J]. Chinese Journal of High Pressure Physics, 2011, 25(5): 421-428 . doi: 10.11858/gywlxb.2011.05.007
Citation: LI Jun, LI Jia-Bo, ZHOU Xian-Ming, WANG Qing-Song, DAI Cheng-Da. A Combined Technique for Measuring Hugoniot and Interfacial Temperature of Preheating Metals[J]. Chinese Journal of High Pressure Physics, 2011, 25(5): 421-428 . doi: 10.11858/gywlxb.2011.05.007
shu

A Combined Technique for Measuring Hugoniot and Interfacial Temperature of Preheating Metals

doi: 10.11858/gywlxb.2011.05.007

  • National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China

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  • Corresponding author: ZHOU Xian-Ming
  • Received Date: 21 Aug 2010
  • Rev Recd Date: 31 Dec 2010
  • Issue Publish Date: 15 Oct 2011
    Abstract
  • Research of dynamic respond properties for metal at initial high-temperature condition is very important to develop the universal equation of state. Thus, resistance-wire preheating apparatus over initial temperature range of 300－800 K has been built up by our group in light-gas-gun experiments, and a non-contact pyrometer diagnostic technique was developed to perform simultaneous measurements of the shock-Hugoniot and the interfacial temperature on a preheated metal. Examples for measuring dynamic respond properties of tantalum are presented. The measured data for shock velocity versus particle velocity at initial temperature of 300 K is in agreement with previous shock compression data, while the data of 773 K lies below the theoretical Hugoniot that was calculated based on the principal Hugoniot. The obtained interfacial temperatures are in agreement with the melting points that shocked from the ambient conditions and ab initio results. It indicates that our target-preheating apparatus and non-contact pyrometer diagnostic technique is a viable approach to study the temperature effects on shock response of metals.

     

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