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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Texture preparation method of bismuth ferrite-barium titanate lead-free piezoelectric ceramic with high piezoelectric property and thermal stability
The invention discloses a texture preparation method of bismuth ferrite-barium titanate leadless piezoelectric ceramic with high piezoelectric performance and thermal stability, the chemical composition general formula of the ceramic is (1-x) BiFeO3-xBaTiO3 + yBa (W0. 5Cu0. 5) O3 + tLi2CO3 + mMnO2, x, y, t and m all represent mole fractions and are 0.25 lt, and the sum of the mole fractions is 1-5. X is less than or equal to 0.40, 0lt; y is less than or equal to 0.05, 0lt; t is less than or equal to 0.05, 0lt; and m < = 0.05. The preparation method is characterized in that a temperature gradient field and an external electric field are added in a sintering stage to induce crystal oriented growth and influence domain structure distribution, and the sintered cylindrical ceramic is transversely cut, vertically cut and obliquely cut by laser to prepare the textured lead-free piezoelectric ceramic of which the in-situ depolarization temperature Tdr is greater than 300 DEG C and the piezoelectric constant d33 is greater than 600pC/N, and creative breakthrough is achieved in process and performance.
本发明公开了一种兼具高压电性能和热稳定性的铁酸铋‑钛酸钡无铅压电陶瓷的织构制备方法，所述陶瓷的化学组成通式为(1‑x)BiFeO3‑xBaTiO3+yBa(W0.5Cu0.5)O3+tLi2CO3+mMnO2，其中x、y、t和m均表示摩尔分数，且0.25
Texture preparation method of bismuth ferrite-barium titanate lead-free piezoelectric ceramic with high piezoelectric property and thermal stability
The invention discloses a texture preparation method of bismuth ferrite-barium titanate leadless piezoelectric ceramic with high piezoelectric performance and thermal stability, the chemical composition general formula of the ceramic is (1-x) BiFeO3-xBaTiO3 + yBa (W0. 5Cu0. 5) O3 + tLi2CO3 + mMnO2, x, y, t and m all represent mole fractions and are 0.25 lt, and the sum of the mole fractions is 1-5. X is less than or equal to 0.40, 0lt; y is less than or equal to 0.05, 0lt; t is less than or equal to 0.05, 0lt; and m < = 0.05. The preparation method is characterized in that a temperature gradient field and an external electric field are added in a sintering stage to induce crystal oriented growth and influence domain structure distribution, and the sintered cylindrical ceramic is transversely cut, vertically cut and obliquely cut by laser to prepare the textured lead-free piezoelectric ceramic of which the in-situ depolarization temperature Tdr is greater than 300 DEG C and the piezoelectric constant d33 is greater than 600pC/N, and creative breakthrough is achieved in process and performance.
本发明公开了一种兼具高压电性能和热稳定性的铁酸铋‑钛酸钡无铅压电陶瓷的织构制备方法，所述陶瓷的化学组成通式为(1‑x)BiFeO3‑xBaTiO3+yBa(W0.5Cu0.5)O3+tLi2CO3+mMnO2，其中x、y、t和m均表示摩尔分数，且0.25
Texture preparation method of bismuth ferrite-barium titanate lead-free piezoelectric ceramic with high piezoelectric property and thermal stability
一种兼具高压电性能和热稳定性的铁酸铋-钛酸钡无铅压电陶瓷的织构制备方法
QIU SHAOHONG (Autor:in) / YANG HUABIN (Autor:in) / CHEN QIAOHONG (Autor:in) / JIANG MINHONG (Autor:in) / LUO QIULING (Autor:in) / ZHU JIAMING (Autor:in) / PAN XIAOHUI (Autor:in)
13.09.2024
Patent
Elektronische Ressource
Chinesisch
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