Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Piezoelectric ceramic for piezoelectric alarm and preparation method of piezoelectric ceramic
The invention discloses piezoelectric ceramic for a piezoelectric alarm and a preparation method of the piezoelectric ceramic. The chemical formula of the material composition of the piezoelectric ceramic is Pb<0.98>Sr<0.02>(Zr<53>Ti<47>)<0.9>(Sb<1/3>Nb<2/3>)< 0.1>O<3> + x Mn<2>, wherein x is equal to 0.05 wt%, 0.15 wt%, 0.2 wt%, 0.25 wt%, 0.3 wt% or 0.35 wt%. The preparation method comprises thefollowing steps: mixing the powder according to the chemical formula, carrying out primary wet ball milling for 4 hours, then carrying out drying and sieving, and performing presintering at 1000 DEG Cfor 2 hours; carrying out secondary wet ball milling for 4 hours, and then carrying out drying and sieving; adding an aqueous polyvinyl alcohol solution with a concentration of 8%; conducting granulating and sieving, and carrying out pressing into a blank; discharging glue from the blank at 600 DEG C for 2 hours; heating the blank to 1250 DEG C; keeping the blank at the temperature for 4 hours toobtain a ceramic chip; and applying electrodes on the ceramic chip and conducting polarizing in silicone oil with a temperature of 75 DEG C and electric field intensity of 3 KV/mm for 25 minutes to obtain a piezoelectric disk. The piezoelectric property of the piezoelectric ceramic at d33 is about 600, and the dielectric constant of the piezoelectric ceramic is 2000-2500.
本发明公开了一种压电报警器用压电陶瓷及其制备方法。其压电陶瓷的材料组成化学式为Pb0.98Sr0.02(Zr53Ti47)0.9(Sb1/3Nb2/3)0.1O3+x MnO2，x=0.05wt%，x=0.15wt%，x=0.2wt%，x=0.25wt%，x=0.3wt%，x=0.35wt%。其制备方法是将化学式中的粉体混合后进行一次湿法球磨4h，烘干过筛后1000℃预烧2h，然后再进行二次湿法球磨4h，烘干过筛后加入8%的聚乙烯醇水溶液，造粒、过筛、压制成坯体，坯体在600℃下排胶2h后升温至1250℃、保温4h得陶瓷片，陶瓷片上电极，并温度为于75℃、电场强度为3KV/mm的硅油中极化25min，得压电陶瓷片。本发明压电陶瓷的压电性能d33为600左右，压电陶瓷材料的介电常数为2000‑2500。
Piezoelectric ceramic for piezoelectric alarm and preparation method of piezoelectric ceramic
The invention discloses piezoelectric ceramic for a piezoelectric alarm and a preparation method of the piezoelectric ceramic. The chemical formula of the material composition of the piezoelectric ceramic is Pb<0.98>Sr<0.02>(Zr<53>Ti<47>)<0.9>(Sb<1/3>Nb<2/3>)< 0.1>O<3> + x Mn<2>, wherein x is equal to 0.05 wt%, 0.15 wt%, 0.2 wt%, 0.25 wt%, 0.3 wt% or 0.35 wt%. The preparation method comprises thefollowing steps: mixing the powder according to the chemical formula, carrying out primary wet ball milling for 4 hours, then carrying out drying and sieving, and performing presintering at 1000 DEG Cfor 2 hours; carrying out secondary wet ball milling for 4 hours, and then carrying out drying and sieving; adding an aqueous polyvinyl alcohol solution with a concentration of 8%; conducting granulating and sieving, and carrying out pressing into a blank; discharging glue from the blank at 600 DEG C for 2 hours; heating the blank to 1250 DEG C; keeping the blank at the temperature for 4 hours toobtain a ceramic chip; and applying electrodes on the ceramic chip and conducting polarizing in silicone oil with a temperature of 75 DEG C and electric field intensity of 3 KV/mm for 25 minutes to obtain a piezoelectric disk. The piezoelectric property of the piezoelectric ceramic at d33 is about 600, and the dielectric constant of the piezoelectric ceramic is 2000-2500.
本发明公开了一种压电报警器用压电陶瓷及其制备方法。其压电陶瓷的材料组成化学式为Pb0.98Sr0.02(Zr53Ti47)0.9(Sb1/3Nb2/3)0.1O3+x MnO2，x=0.05wt%，x=0.15wt%，x=0.2wt%，x=0.25wt%，x=0.3wt%，x=0.35wt%。其制备方法是将化学式中的粉体混合后进行一次湿法球磨4h，烘干过筛后1000℃预烧2h，然后再进行二次湿法球磨4h，烘干过筛后加入8%的聚乙烯醇水溶液，造粒、过筛、压制成坯体，坯体在600℃下排胶2h后升温至1250℃、保温4h得陶瓷片，陶瓷片上电极，并温度为于75℃、电场强度为3KV/mm的硅油中极化25min，得压电陶瓷片。本发明压电陶瓷的压电性能d33为600左右，压电陶瓷材料的介电常数为2000‑2500。
Piezoelectric ceramic for piezoelectric alarm and preparation method of piezoelectric ceramic
压电报警器用压电陶瓷及其制备方法
ZHANG JING (Autor:in) / JIANG PING (Autor:in) / ZHANG YUANSONG (Autor:in) / CHU TAO (Autor:in) / WANG YU (Autor:in) / ZHONG MIN (Autor:in) / GUAN YAO (Autor:in)
02.03.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2017
| Europäisches Patentamt | 2017
| Europäisches Patentamt | 2019
| Europäisches Patentamt | 2017
| Europäisches Patentamt | 2022