1. Pressure generation to 65 GPa in a Kawai-type multi-anvil apparatus with tungsten carbide anvils.
- Author
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Ishii, Takayuki, Yamazaki, Daisuke, Tsujino, Noriyoshi, Xu, Fang, Liu, Zhaodong, Kawazoe, Takaaki, Yamamoto, Takafumi, Druzhbin, Dmitry, Wang, Lin, Higo, Yuji, Tange, Yoshinori, Yoshino, Takashi, and Katsura, Tomoo
- Subjects
TUNGSTEN carbide ,SYNCHROTRONS ,X-ray diffraction ,EARTH sciences ,DETECTORS - Abstract
We have expanded the pressure ranges at room and high temperatures generated in a Kawai-type multi-anvil apparatus (KMA) using tungsten carbide (WC) anvils with a high hardness ofHv = 2700 and a Young’s modulus of 660 GPa. At room temperature, a pressure of 64 GPa, which is the highest pressure generated with KMA using WC anvils in the world, was achieved using 1°-tapered anvils with a 1.5-mm truncation. Pressures of 48–50 GPa were generated at high temperatures of 1600–2000 K, which are also higher than previously achieved. Tapered anvils make wide anvil gaps enabling efficient X-ray diffraction. The present pressure generation technique can be used for studying the upper part of the Earth’s lower mantle down to 1200 km depth without sintered diamond anvils. [ABSTRACT FROM PUBLISHER]
- Published
- 2017
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