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PbZrO3-based low-remanent-polarization ceramic with A-bit high-entropy design and preparation method of PbZrO3-based low-remanent-polarization ceramic
The invention discloses a PbZrO3-based low-remanent polarization ceramic with A-bit high-entropy design and a preparation method thereof, and belongs to the technical field of high-entropy ceramic materials. The chemical formula of the high-entropy ceramic material is (Pb0. 2Bi0. 2Ba0. 2Sr0. 2Me0. 2) ZrO3, Me = Na, K and Li, and the preparation process comprises the following steps: respectively weighing PbO powder, BaCO3 powder, Bi2O3 powder, SrCO3 powder, ZrO2 powder, Na2CO3 powder or K2CO3 powder or Li2CO3 powder according to a designed stoichiometric ratio, then carrying out wet ball milling, centrifugal spray drying and pre-sintering, carrying out dry grinding, drying, grinding, sieving and tabletting on the obtained pre-sintered powder, and finally sintering in air at 1260 DEG C for 2.5 hours to obtain the (Pb0. 2Bi0. 2Ba0. 2Sr0. 2Me0. 2) ZrO3 (Me = Na, K and Li) high-entropy ceramic. The breakdown field strength of the (Pb0. 2Bi0. 2Ba0. 2Sr0. 2Na0. 2) ZrO3 high-entropy ceramic reaches 120kv/cm under the test frequency of 10Hz, the remanent polarization is only 0.06 mu C/cm < 2 >, and the (Pb0. 2Bi0. 2Ba0. 2Sr0. 2Na0. 2) ZrO3 high-entropy ceramic is expected to become a candidate material of a ceramic capacitor with low
本发明公开了一种A位高熵化设计的PbZrO3基低剩余极化强度的陶瓷及其制备方法，属于高熵陶瓷材料技术领域。本发明所述高熵陶瓷材料的化学式为(Pb0.2Bi0.2Ba0.2Sr0.2Me0.2)ZrO3，Me＝Na、K、Li制备过程为按照设计的化学计量比分别称量PbO、BaCO3、Bi2O3、SrCO3、ZrO2、Na2CO3或者K2CO3或者Li2CO3粉末，之后进行湿法球磨、离心喷雾干燥、预烧，对所得预烧粉末进行干磨、干燥、研磨、过筛、压片，最后经空气中1260℃下烧结2.5h得到(Pb0.2Bi0.2Ba0.2Sr0.2Me0.2)ZrO3(Me＝Na、K、Li)高熵陶瓷。(Pb0.2Bi0.2Ba0.2Sr0.2Na0.2)ZrO3高熵陶瓷在10Hz测试频率下，击穿场强达到120kv/cm，剩余极化强度仅仅为0.06μC/cm2，有望成为低剩余极化的陶瓷电容器的候选材料。
PbZrO3-based low-remanent-polarization ceramic with A-bit high-entropy design and preparation method of PbZrO3-based low-remanent-polarization ceramic
The invention discloses a PbZrO3-based low-remanent polarization ceramic with A-bit high-entropy design and a preparation method thereof, and belongs to the technical field of high-entropy ceramic materials. The chemical formula of the high-entropy ceramic material is (Pb0. 2Bi0. 2Ba0. 2Sr0. 2Me0. 2) ZrO3, Me = Na, K and Li, and the preparation process comprises the following steps: respectively weighing PbO powder, BaCO3 powder, Bi2O3 powder, SrCO3 powder, ZrO2 powder, Na2CO3 powder or K2CO3 powder or Li2CO3 powder according to a designed stoichiometric ratio, then carrying out wet ball milling, centrifugal spray drying and pre-sintering, carrying out dry grinding, drying, grinding, sieving and tabletting on the obtained pre-sintered powder, and finally sintering in air at 1260 DEG C for 2.5 hours to obtain the (Pb0. 2Bi0. 2Ba0. 2Sr0. 2Me0. 2) ZrO3 (Me = Na, K and Li) high-entropy ceramic. The breakdown field strength of the (Pb0. 2Bi0. 2Ba0. 2Sr0. 2Na0. 2) ZrO3 high-entropy ceramic reaches 120kv/cm under the test frequency of 10Hz, the remanent polarization is only 0.06 mu C/cm < 2 >, and the (Pb0. 2Bi0. 2Ba0. 2Sr0. 2Na0. 2) ZrO3 high-entropy ceramic is expected to become a candidate material of a ceramic capacitor with low
本发明公开了一种A位高熵化设计的PbZrO3基低剩余极化强度的陶瓷及其制备方法，属于高熵陶瓷材料技术领域。本发明所述高熵陶瓷材料的化学式为(Pb0.2Bi0.2Ba0.2Sr0.2Me0.2)ZrO3，Me＝Na、K、Li制备过程为按照设计的化学计量比分别称量PbO、BaCO3、Bi2O3、SrCO3、ZrO2、Na2CO3或者K2CO3或者Li2CO3粉末，之后进行湿法球磨、离心喷雾干燥、预烧，对所得预烧粉末进行干磨、干燥、研磨、过筛、压片，最后经空气中1260℃下烧结2.5h得到(Pb0.2Bi0.2Ba0.2Sr0.2Me0.2)ZrO3(Me＝Na、K、Li)高熵陶瓷。(Pb0.2Bi0.2Ba0.2Sr0.2Na0.2)ZrO3高熵陶瓷在10Hz测试频率下，击穿场强达到120kv/cm，剩余极化强度仅仅为0.06μC/cm2，有望成为低剩余极化的陶瓷电容器的候选材料。
PbZrO3-based low-remanent-polarization ceramic with A-bit high-entropy design and preparation method of PbZrO3-based low-remanent-polarization ceramic
一种A位高熵化设计的PbZrO3基低剩余极化强度的陶瓷及其制备方法
ZHANG HAN (author) / LI CHAOXIONG (author) / HUANG ZHANGFENG (author) / YANG XIANMENG (author) / HUANG XINCHUN (author) / SONG BANGHONG (author)
2024-08-16
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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