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Bismuth ferrite-zinc bismuth titanate high-temperature leadless piezoelectric ceramic with high-temperature stability and preparation method thereof
The invention discloses bismuth ferrite-zinc bismuth titanate high-temperature lead-free piezoelectric ceramic with high-temperature stability and a preparation method thereof. The general compositionformula of the ceramic is xBi<1.05>FeO<3-y> Bi(Ti<0.5>Zn<0.5>)O<3>+tP+mMnCO<3>, wherein P is one sintering aid or a combination of two sintering aids selected from the group consisting of Ba(W<0.5>Cu<0.5>)O<3>, Ba(Cu<1/3>Nb<2/3>)O<3> and Li<2>CO<3>; x, y, t and m represent molar fractions; x is greater than or equal to 0.50 and less than or equal to 0.90; y is greater than 0 and less than or equal to 0.5; t is greater than 0 and less than or equal to 0.1; and m is greater than 0 and less than or equal to 0.1. The preparation method comprises the following steps: conducting procedures including burdening according to the composition general formula, ball-milling, forming, glue discharging, sintering and the like, and then promoting sintering by adopting the low-temperature sintering aids to obtain the compact piezoelectric ceramic. With the method, a piezoelectric ceramic base with a depolarization temperature Td of 725 DEG C or above and the highest piezoelectric constant of 15.7 pC/Nis prepared; and the ceramic is expected to be applied to high-temperature fields of aerospace, nuclear power, oil exploration, automobiles and the like.
本发明公开了一种具有高温稳定性的铁酸铋‑锌钛酸铋高温无铅压电陶瓷及其制备方法，其组成通式为xBiFeO‑yBi(TiZn)O+tP+mMnCO，其中P为Ba(WCu)O、Ba(CuNb)O、LiCO中的一种或两种烧结助剂的组合；x、y、t、m表示摩尔分数，且0.50≤x≤0.90，0
Bismuth ferrite-zinc bismuth titanate high-temperature leadless piezoelectric ceramic with high-temperature stability and preparation method thereof
The invention discloses bismuth ferrite-zinc bismuth titanate high-temperature lead-free piezoelectric ceramic with high-temperature stability and a preparation method thereof. The general compositionformula of the ceramic is xBi<1.05>FeO<3-y> Bi(Ti<0.5>Zn<0.5>)O<3>+tP+mMnCO<3>, wherein P is one sintering aid or a combination of two sintering aids selected from the group consisting of Ba(W<0.5>Cu<0.5>)O<3>, Ba(Cu<1/3>Nb<2/3>)O<3> and Li<2>CO<3>; x, y, t and m represent molar fractions; x is greater than or equal to 0.50 and less than or equal to 0.90; y is greater than 0 and less than or equal to 0.5; t is greater than 0 and less than or equal to 0.1; and m is greater than 0 and less than or equal to 0.1. The preparation method comprises the following steps: conducting procedures including burdening according to the composition general formula, ball-milling, forming, glue discharging, sintering and the like, and then promoting sintering by adopting the low-temperature sintering aids to obtain the compact piezoelectric ceramic. With the method, a piezoelectric ceramic base with a depolarization temperature Td of 725 DEG C or above and the highest piezoelectric constant of 15.7 pC/Nis prepared; and the ceramic is expected to be applied to high-temperature fields of aerospace, nuclear power, oil exploration, automobiles and the like.
本发明公开了一种具有高温稳定性的铁酸铋‑锌钛酸铋高温无铅压电陶瓷及其制备方法，其组成通式为xBiFeO‑yBi(TiZn)O+tP+mMnCO，其中P为Ba(WCu)O、Ba(CuNb)O、LiCO中的一种或两种烧结助剂的组合；x、y、t、m表示摩尔分数，且0.50≤x≤0.90，0
Bismuth ferrite-zinc bismuth titanate high-temperature leadless piezoelectric ceramic with high-temperature stability and preparation method thereof
一种具有高温稳定性的铁酸铋-锌钛酸铋高温无铅压电陶瓷及其制备方法
YUAN LINNA (author) / YANG HUABIN (author) / SUN YUANYUAN (author) / YANG LING (author) / HUANG WEIRAN (author)
2020-05-12
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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