Preparation of Cobalt-Doped Magnesium Oxide Pressure-Transmitting Medium with Solid Reaction Process

WU Jingjun; HE Duanwei; WANG Qiang; ZHANG Jiawei; LIU Jin

doi:10.11858/gywlxb.20180564

Volume 32 Issue 5

Aug 2018

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Abstract

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Chinese Journal of High Pressure Physics > 2018 > 32(5): 053301.

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WU Jingjun, HE Duanwei, WANG Qiang, ZHANG Jiawei, LIU Jin. Preparation of Cobalt-Doped Magnesium Oxide Pressure-Transmitting Medium with Solid Reaction Process[J]. Chinese Journal of High Pressure Physics, 2018, 32(5): 053301. doi: 10.11858/gywlxb.20180564

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Preparation of Cobalt-Doped Magnesium Oxide Pressure-Transmitting Medium with Solid Reaction Process

doi: 10.11858/gywlxb.20180564

WU Jingjun^{1, 2
,},
HE Duanwei^{1, 2,*
,
,},
WANG Qiang^{1, 2},
ZHANG Jiawei^{1, 2},
LIU Jin^{1, 2}

1.
Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
2.
Key Laboratory of High Energy Density Physics and Technology of Ministry of Education, Sichuan University, Chengdu 610065, China

Received Date: 16 May 2018
Rev Recd Date: 24 May 2018

Abstract

Abstract

In this study, magnesium oxide (MgO) doped by cobalt (Co) was prepared as pressure-transmitting medium, by solid reaction process.The starting material is a pre-compressed mixture of MgO and cobalt oxide (CoO), which was mixed for 8 h and compressed at 200 MPa, and then treated at 1 200℃.The as-prepared samples were characterized by X-ray diffraction, scanning electron microscopy, and thermogravimetric analysis.The results demonstrate that during the sintering process, the reaction between MgO and CoO was completed and the exchange of metal ions between MgO and CoO leads to a single solid solution phase.Compared to the domestic products (MgO+10wt% Na₄SiO₄), there is no impurity found in Co-doped MgO, which is more stable than the domestic products under high pressure and high-temperature.In addition, the temperature-generation efficiency of the cell assembly with MgO+9mol% CoO as pressure-transmitting medium is also higher than that of the domestic products.
- solid reaction process,
- high pressure and high temperature,
- MgO-CoO solid solution,
- pressure-transmitting medium,
- temperature generation efficiency

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References(24)

References

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