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Electrocaloric refrigeration ceramic and preparation method thereof
The invention discloses an electrocaloric refrigeration ceramic which comprises the following components in mole percent: (Ba1-yCay) (Ti1-xSnx) O3, x is more than or equal to 0 and less than or equal to 0.19, and y is more than or equal to 0.10 and less than or equal to 0.22. The invention also discloses a preparation method of the electrocaloric refrigeration ceramic. According to the invention, the BaTiO3 ceramic is doped with the Sn element and the Ca element in a certain proportion, so that the tri-critical point and the relaxation region in the BaTiO3 ceramic coincide, a tri-critical-relaxation cross region is formed, and the electrocaloric refrigeration ceramic with a large electrocaloric effect in a wide temperature range is realized.
本公开揭示了一种电卡制冷陶瓷，所述陶瓷的组分及摩尔百分比含量为：(Ba1‑yCay)(Ti1‑xSnx)O3，其中，0≤x≤0.19，0.10≤y≤0.22。本公开还揭示了一种电卡制冷陶瓷的制备方法。本公开通过在BaTiO3陶瓷中掺杂一定比例的Sn元素和Ca元素，使得BaTiO3陶瓷中的三临界点和弛豫区域重合，形成三临界‑弛豫交叉区，实现了在宽温度范围具有大电卡效应的电卡制冷陶瓷。
Electrocaloric refrigeration ceramic and preparation method thereof
The invention discloses an electrocaloric refrigeration ceramic which comprises the following components in mole percent: (Ba1-yCay) (Ti1-xSnx) O3, x is more than or equal to 0 and less than or equal to 0.19, and y is more than or equal to 0.10 and less than or equal to 0.22. The invention also discloses a preparation method of the electrocaloric refrigeration ceramic. According to the invention, the BaTiO3 ceramic is doped with the Sn element and the Ca element in a certain proportion, so that the tri-critical point and the relaxation region in the BaTiO3 ceramic coincide, a tri-critical-relaxation cross region is formed, and the electrocaloric refrigeration ceramic with a large electrocaloric effect in a wide temperature range is realized.
本公开揭示了一种电卡制冷陶瓷，所述陶瓷的组分及摩尔百分比含量为：(Ba1‑yCay)(Ti1‑xSnx)O3，其中，0≤x≤0.19，0.10≤y≤0.22。本公开还揭示了一种电卡制冷陶瓷的制备方法。本公开通过在BaTiO3陶瓷中掺杂一定比例的Sn元素和Ca元素，使得BaTiO3陶瓷中的三临界点和弛豫区域重合，形成三临界‑弛豫交叉区，实现了在宽温度范围具有大电卡效应的电卡制冷陶瓷。
Electrocaloric refrigeration ceramic and preparation method thereof
一种电卡制冷陶瓷及其制备方法
GAO JINGHUI (author) / WU MING (author) / XIAO YANAN (author) / LIU YONGBIN (author) / ZHONG LISHENG (author)
2023-05-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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