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High-entropy ceramic with olivine structure and preparation method thereof
The invention provides high-entropy ceramic with an olivine structure and a preparation method of the high-entropy ceramic. The chemical general formula of the high-entropy ceramic is LiMg < 1-x > A < x > PO4 (0 lt; x is less than or equal to 0.8), and A is at least four elements of Zn, Cu, Mg, Ni, Mn and Co. A solid-phase reaction sintering method is adopted, the preparation method is simple, the sintering temperature is lower than 950 DEG C, and application to a low-temperature co-firing technology is facilitated. The high-entropy ceramic with the olivine structure can obtain excellent comprehensive microwave dielectric properties under the condition that a positive tau f value material does not need to be additionally added. The LiMg0.9 (ZnNiMnCo) 0.025 PO4 ceramic sintered at the temperature of 875 DEG C has excellent microwave dielectric properties: epsilon r is equal to 8.13, Q * f is equal to 37149 GHz, and tau f is equal to-9.7 ppm/DEG C.
本发明提供了一种具有橄榄石结构的高熵陶瓷及其制备方法。所述高熵陶瓷的化学通式为LiMg1‑xAxPO4(0
High-entropy ceramic with olivine structure and preparation method thereof
The invention provides high-entropy ceramic with an olivine structure and a preparation method of the high-entropy ceramic. The chemical general formula of the high-entropy ceramic is LiMg < 1-x > A < x > PO4 (0 lt; x is less than or equal to 0.8), and A is at least four elements of Zn, Cu, Mg, Ni, Mn and Co. A solid-phase reaction sintering method is adopted, the preparation method is simple, the sintering temperature is lower than 950 DEG C, and application to a low-temperature co-firing technology is facilitated. The high-entropy ceramic with the olivine structure can obtain excellent comprehensive microwave dielectric properties under the condition that a positive tau f value material does not need to be additionally added. The LiMg0.9 (ZnNiMnCo) 0.025 PO4 ceramic sintered at the temperature of 875 DEG C has excellent microwave dielectric properties: epsilon r is equal to 8.13, Q * f is equal to 37149 GHz, and tau f is equal to-9.7 ppm/DEG C.
本发明提供了一种具有橄榄石结构的高熵陶瓷及其制备方法。所述高熵陶瓷的化学通式为LiMg1‑xAxPO4(0
High-entropy ceramic with olivine structure and preparation method thereof
具有橄榄石结构的高熵陶瓷及其制备方法
SU CONGXUE (author) / HUANG LIYING (author) / CHE HAIYAN (author) / QIN XINGLIU (author) / CHEN LIANCHUN (author) / FAN JUN (author) / FANG LIANG (author)
2024-04-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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