CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES |
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Static strength of gold compressed up to 127 GPa |
Jing Qiu-Min (敬秋民), Wu Qiang (吴强), Liu Lei (柳雷), Bi Yan (毕延), Zhang Yi (张毅), Liu Sheng-Gang (刘盛刚), Xu Ji-An (徐济安) |
Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China |
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Abstract Gold powder is compressed non-hydrostatically up to 127 GPa in a diamond anvil cell (DAC), and its angle dispersive X-ray diffraction patterns are recorded. The compressive strength of gold is investigated in a framework of the lattice strain theory by the line shift analysis. The result shows that the compressive strength of gold increases continuously with the pressure up to 106 GPa and reaches 2.8 GPa at the highest experimental pressure (127 GPa) achieved in our study. This result is in good agreement with our previous experimental result in a relevant pressure range. The compressive strength of gold may be the major source of the error in the equation-of-state measurement in various pressure environments.
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Received: 12 March 2012
Revised: 25 April 2012
Accepted manuscript online:
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PACS:
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62.20.fg
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(Shape-memory effect; yield stress; superelasticity)
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62.50.-p
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(High-pressure effects in solids and liquids)
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07.35.+k
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(High-pressure apparatus; shock tubes; diamond anvil cells)
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Fund: Project supported by the Defense Industrial Technology Development Program (Grant No. B1520110001) and the Fund of Key Laboratory of Shock Wave and Detonation Physics of China (Grant No. 9140C6703031002). |
Corresponding Authors:
Jing Qiu-Min
E-mail: j_qm@163.com
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Cite this article:
Jing Qiu-Min (敬秋民), Wu Qiang (吴强), Liu Lei (柳雷), Bi Yan (毕延), Zhang Yi (张毅), Liu Sheng-Gang (刘盛刚), Xu Ji-An (徐济安) Static strength of gold compressed up to 127 GPa 2012 Chin. Phys. B 21 106201
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