Operation of large-volume cubic press above 8 GPa and 2500°C with a centimeter-sized cell volume using an optimized hybrid assembly

Song，Guozhu1; Ma，Dejiang1; Zhou，Xuefeng1; Wang，Lingfei1; Wei，Zheng1; Xu，Chao1,2; Wang，Wendan1,3; Wang，Liping1; Zhao，Yusheng1; Wang，Shanmin1

2021

10.1080/08957959.2021.1897983

HIGH PRESSURE RESEARCH   影响因子和分区

0895-7959

1477-2299

Large-volume cubic presses are widely used in scientific research and industrial applications. However, their pressure capability is often limited to 6 GPa, which severely restricts their applications under extended pressures. In this work, we report a newly designed hybrid cell assembly for cubic presses by embedding six WC pressure-enhancing blocks into the pyrophyllite pressure-transmitting medium, leading to profoundly increased pressure efficiency (i.e. more than 40%), hence largely extended pressure conditions up to 8–9 GPa without sacrificing sample volume. Because of the optimized design, the expensive first-stage WC anvils are effectively protected, which makes the press routinely operated up to 8–9 GPa in avoiding damage of anvils. Through optimization of heating efficiency, temperature of the new assembly can reach above 2500°C. Using this high pressure cell, we have synthesized centimetre-sized polycrystalline cubic BN bulk sample by the direct transformation of hexagonal BN at 7.7 GPa and 2000°C. Successful implementation of large-volume cubic press up to 8–9 GPa and 2500°C would provide many opportunities for the synthesis of new materials on massive scale (e.g. novel superhard compounds) and for the study of materials at extended pressures.

Cubic press high pressure hybrid cell assembly superhard materials

SCI ; EI

英语

第一 ; 通讯

WOS:000628699000001

20211210109113

Cubic boron nitride ; Efficiency ; Industrial research ; Silicate minerals

Minerals:482.2 ; Machine Tools, General:603.1 ; Ceramics:812.1 ; Engineering Research:901.3 ; Production Engineering:913.1

PHYSICS

2-s2.0-85102700382

Scopus

1.Department of Physics and Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,China
2.College of Science,Wuhan University of Science and Technology,Wuhan,China
3.College of Physical Science and Technology,Southwest Jiaotong University,Chengdu,China

Song，Guozhu,Ma，Dejiang,Zhou，Xuefeng,et al. Operation of large-volume cubic press above 8 GPa and 2500°C with a centimeter-sized cell volume using an optimized hybrid assembly[J]. HIGH PRESSURE RESEARCH,2021,41:132-141.

Song，Guozhu.,Ma，Dejiang.,Zhou，Xuefeng.,Wang，Lingfei.,Wei，Zheng.,...&Wang，Shanmin.(2021).Operation of large-volume cubic press above 8 GPa and 2500°C with a centimeter-sized cell volume using an optimized hybrid assembly.HIGH PRESSURE RESEARCH,41,132-141.

Song，Guozhu,et al."Operation of large-volume cubic press above 8 GPa and 2500°C with a centimeter-sized cell volume using an optimized hybrid assembly".HIGH PRESSURE RESEARCH 41(2021):132-141.