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Preparation method of high-performance bismuth ferrite barium titanate-based lead-free high-temperature piezoelectric ceramic
The invention discloses a preparation method of high-performance bismuth ferrite barium titanate-based lead-free high-temperature piezoelectric ceramic. The preparation method comprises the following steps: S1, preparing 0.7 BiFeO3-0. 3 BaTiO3 (BF-BT) powder; s2, (Ba0. 85Ca0. 15Zr0. 1Ti0. 9) O3 (BCZT) powder is prepared; s3, preparing 0.7 BF <-> to 0.3 BT <-> to x% of BCZT <-> to y% of MnO2 powder; s4, adding 3wt%-7wt% of a polyvinyl alcohol (PVA) solution into the 0.7 BF <-0.3 > BT <-x >% BCZT <-y >% MnO2 powder, granulating, and then pressing into a wafer; and S5, sintering to obtain the large-strain piezoelectric ceramic material. According to the preparation method disclosed by the invention, a morphotropic phase boundary is constructed by utilizing BCZT compounding, and meanwhile, a crystal microstructure is improved, so that the high-performance BF-BT-based high-temperature lead-free piezoelectric ceramic is obtained.
本发明公开一种高性能铁酸铋钛酸钡基无铅高温压电陶瓷制备方法，包括以下步骤：S1、制备0.7BiFeO3‑0.3BaTiO3(BF‑BT)粉体；S2、制备(Ba0.85Ca0.15Zr0.1Ti0.9)O3(BCZT)粉末；S3、制备0.7BF‑0.3BT‑x％BCZT‑y％MnO2粉末；S4、在0.7BF‑0.3BT‑x％BCZT‑y％MnO2粉体种加入3wt％～7wt％的聚乙烯醇(PVA)溶液进行造粒，然后压制成圆片；S5、烧结得到大应变压电陶瓷材料。本发明利用BCZT复合，构件准同型相界，同时改善晶体微观组织结构，从而获得高性能BF‑BT基高温无铅压电陶瓷。
Preparation method of high-performance bismuth ferrite barium titanate-based lead-free high-temperature piezoelectric ceramic
The invention discloses a preparation method of high-performance bismuth ferrite barium titanate-based lead-free high-temperature piezoelectric ceramic. The preparation method comprises the following steps: S1, preparing 0.7 BiFeO3-0. 3 BaTiO3 (BF-BT) powder; s2, (Ba0. 85Ca0. 15Zr0. 1Ti0. 9) O3 (BCZT) powder is prepared; s3, preparing 0.7 BF <-> to 0.3 BT <-> to x% of BCZT <-> to y% of MnO2 powder; s4, adding 3wt%-7wt% of a polyvinyl alcohol (PVA) solution into the 0.7 BF <-0.3 > BT <-x >% BCZT <-y >% MnO2 powder, granulating, and then pressing into a wafer; and S5, sintering to obtain the large-strain piezoelectric ceramic material. According to the preparation method disclosed by the invention, a morphotropic phase boundary is constructed by utilizing BCZT compounding, and meanwhile, a crystal microstructure is improved, so that the high-performance BF-BT-based high-temperature lead-free piezoelectric ceramic is obtained.
本发明公开一种高性能铁酸铋钛酸钡基无铅高温压电陶瓷制备方法，包括以下步骤：S1、制备0.7BiFeO3‑0.3BaTiO3(BF‑BT)粉体；S2、制备(Ba0.85Ca0.15Zr0.1Ti0.9)O3(BCZT)粉末；S3、制备0.7BF‑0.3BT‑x％BCZT‑y％MnO2粉末；S4、在0.7BF‑0.3BT‑x％BCZT‑y％MnO2粉体种加入3wt％～7wt％的聚乙烯醇(PVA)溶液进行造粒，然后压制成圆片；S5、烧结得到大应变压电陶瓷材料。本发明利用BCZT复合，构件准同型相界，同时改善晶体微观组织结构，从而获得高性能BF‑BT基高温无铅压电陶瓷。
Preparation method of high-performance bismuth ferrite barium titanate-based lead-free high-temperature piezoelectric ceramic
一种高性能铁酸铋钛酸钡基无铅高温压电陶瓷制备方法
TAN HUA (Autor:in) / XIONG QIANG (Autor:in) / ZHANG HAIBO (Autor:in) / WU TIANQIONG (Autor:in) / MA WEIGANG (Autor:in) / LUO JIANGHAI (Autor:in) / WANG CHUANMIN (Autor:in) / LIU JINPENG (Autor:in) / CHEN ZHIMING (Autor:in)
23.02.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2024
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