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Quaternary piezoelectric ceramic for loudspeaker and preparation method of quaternary piezoelectric ceramic
The invention discloses quaternary piezoelectric ceramic for a loudspeaker and a preparation method of the quaternary piezoelectric ceramic. The chemical formula of the material composition of the piezoelectric ceramic is Pb(Sn0.5Nb0.5)O3-Pb(Ni1/3Nb2/3)O3-Pb[ZrxTi (1-x)]O3, x is equal to 0.4-0.45, and 0.05 wt%-3.5 wt% of CeO2 is selected for doping modification. The preparation method comprises the following steps: mixing the powder in the chemical formula, carrying out primary wet ball milling for 4 hours, drying, sieving, presintering at 800 DEG C for 4 hours, carrying out secondary wet ballmilling for 4 hours, drying, sieving, adding an 8% polyvinyl alcohol aqueous solution, granulating, sieving, pressing to obtain a blank, discharging glue from the blank at 600 DEG C for 2 hours, heating to 1280 DEG C, and keeping the temperature for 2 hours to obtain a ceramic chip and ceramic chip upper electrode, and polarizing in silicone oil with the temperature of 75 DEG C and the electric field intensity of 2.3 KV/mm for 25 minutes to obtain the piezoelectric ceramic piece. The piezoelectric property d33 of the piezoelectric ceramic is about 500-580, and the dielectric constant of the piezoelectric ceramic material is 2000-3000.
本发明公开了一种扬声器用四元系压电陶瓷及其制备方法。其压电陶瓷的材料组成化学式为Pb(Sn0.5Nb0.5)O3‑Pb(Ni1/3Nb2/3)O3‑Pb[ZrxTi(1‑x)]O3，其中x=0.4‑0.45，选用0.05wt.%‑3.5 wt.%的CeO2进行掺杂改性。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800℃预烧4h，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1280℃、保温2h得陶瓷片，陶瓷片上电极，并温度为于75℃、电场强度为2.3KV/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500‑580左右，压电陶瓷材料的介电常数为2000‑3000。
Quaternary piezoelectric ceramic for loudspeaker and preparation method of quaternary piezoelectric ceramic
The invention discloses quaternary piezoelectric ceramic for a loudspeaker and a preparation method of the quaternary piezoelectric ceramic. The chemical formula of the material composition of the piezoelectric ceramic is Pb(Sn0.5Nb0.5)O3-Pb(Ni1/3Nb2/3)O3-Pb[ZrxTi (1-x)]O3, x is equal to 0.4-0.45, and 0.05 wt%-3.5 wt% of CeO2 is selected for doping modification. The preparation method comprises the following steps: mixing the powder in the chemical formula, carrying out primary wet ball milling for 4 hours, drying, sieving, presintering at 800 DEG C for 4 hours, carrying out secondary wet ballmilling for 4 hours, drying, sieving, adding an 8% polyvinyl alcohol aqueous solution, granulating, sieving, pressing to obtain a blank, discharging glue from the blank at 600 DEG C for 2 hours, heating to 1280 DEG C, and keeping the temperature for 2 hours to obtain a ceramic chip and ceramic chip upper electrode, and polarizing in silicone oil with the temperature of 75 DEG C and the electric field intensity of 2.3 KV/mm for 25 minutes to obtain the piezoelectric ceramic piece. The piezoelectric property d33 of the piezoelectric ceramic is about 500-580, and the dielectric constant of the piezoelectric ceramic material is 2000-3000.
本发明公开了一种扬声器用四元系压电陶瓷及其制备方法。其压电陶瓷的材料组成化学式为Pb(Sn0.5Nb0.5)O3‑Pb(Ni1/3Nb2/3)O3‑Pb[ZrxTi(1‑x)]O3，其中x=0.4‑0.45，选用0.05wt.%‑3.5 wt.%的CeO2进行掺杂改性。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800℃预烧4h，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1280℃、保温2h得陶瓷片，陶瓷片上电极，并温度为于75℃、电场强度为2.3KV/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500‑580左右，压电陶瓷材料的介电常数为2000‑3000。
Quaternary piezoelectric ceramic for loudspeaker and preparation method of quaternary piezoelectric ceramic
扬声器用四元系压电陶瓷及其制备方法
ZHANG JING (author) / GUAN YAO (author) / JIANG PING (author) / ZHANG YUANSONG (author) / CHU TAO (author) / ZHONG MIN (author) / YAN ZHOUMIN (author)
2021-03-09
Patent
Electronic Resource
Chinese
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