Lead zirconate titanate-manganese bismuth based perovskite-lead based composite perovskite multi-component low-temperature sintered large-power piezoelectric ceramic, and preparation method thereof

A technology of compounding perovskite and lead zirconate titanate is applied in the field of piezoelectric ceramics and its preparation, and achieves the effects of excellent piezoelectric properties, optimized electrical properties and high mechanical quality factor

Inactive Publication Date: 2019-07-02
HEFEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Unfortunately, there are no research reports on the composition design, electrical properties and preparation process of lead zirconate titanate-manganese bismuth-based perovskite-lead-based composite perovskite multi-component low-temperature sintered high-power piezoelectric ceramics in the existing literature.

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  • Lead zirconate titanate-manganese bismuth based perovskite-lead based composite perovskite multi-component low-temperature sintered large-power piezoelectric ceramic, and preparation method thereof
  • Lead zirconate titanate-manganese bismuth based perovskite-lead based composite perovskite multi-component low-temperature sintered large-power piezoelectric ceramic, and preparation method thereof
  • Lead zirconate titanate-manganese bismuth based perovskite-lead based composite perovskite multi-component low-temperature sintered large-power piezoelectric ceramic, and preparation method thereof

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Embodiment 1

[0029] Carry out each step successively according to the above-mentioned embodiment mode, the present embodiment adopts the composition general formula of piezoelectric ceramics to be:

[0030] 0.9Pb(Zr 0.48 Ti 0.52 )O 3 +0.04Bi(Mn 2 / 3 Sb 1 / 3 )O 3 +0.06Pb(Mg 1 / 3 Nb 2 / 3 )O 3 . The calcination temperature is 850° C. and the time is 2 hours. The wet ball milling time in deionized water was 10 hours. After compression molding, the green body is sintered at a temperature of 1120° C. for 2 hours. After the two ends of the polished ceramic blank are covered with silver electrodes, place them in 150°C silicone oil and apply a polarizing DC voltage of 4kV / mm, and keep them warm for 15 minutes to obtain high-power piezoelectric ceramics.

[0031] The dielectric-temperature characteristic curve of the piezoelectric ceramic prepared in this embodiment is as follows figure 1 As shown, other physical properties of the measured sample: the Curie temperature is 296°C, the dielectr...

Embodiment 2

[0033] Carry out each step sequentially according to the above-mentioned embodiment mode, the general composition formula of the piezoelectric ceramic of the present embodiment is:

[0034] 0.8937Pb(Zr 0.48 Ti 0.52 )O 3 +0.03972Bi(Mn 2 / 3 Sb 1 / 3 )O 3 +0.05958Pb(Ni 1 / 3 Nb 2 / 3 )O 3 +0.007Sm 2 o 3 . The calcination temperature is 850° C. and the time is 2 hours. The wet ball milling time in deionized water was 10 hours. After compression molding, the green body is sintered at a temperature of 1020° C. for 2 hours. After the two ends of the polished ceramic blank are covered with silver electrodes, place them in 150°C silicone oil and apply a polarizing DC voltage of 4kV / mm, and keep them warm for 15 minutes to obtain high-power piezoelectric ceramics.

[0035] The piezoelectric ceramic hysteresis loop prepared in this embodiment is as follows figure 2 As shown, its physical properties are: the Curie temperature is 302°C, the dielectric constant is 1620 (1kHz), the p...

Embodiment 3

[0037] Carry out each step sequentially according to the above-mentioned embodiment mode, the general composition formula of the piezoelectric ceramic of the present embodiment is:

[0038] 0.8928Pb(Zr 0.505 Ti 0.495 )O 3 +0.03968Bi(Mn 1 / 2 Ti 1 / 2 )O 3 +0.05952Pb(Zn 1 / 3 Nb 2 / 3 )O 3 +0.004CuO+0.004Fe 2 o 3 . The calcination temperature is 850° C. and the time is 2 hours. The wet ball milling time in deionized water was 10 hours. After compression molding, the green body is sintered at a temperature of 1020° C. for 2 hours. After the two ends of the polished ceramic blank are covered with silver electrodes, place them in 150°C silicone oil and apply a polarizing DC voltage of 4kV / mm, and keep them warm for 15 minutes to obtain high-power piezoelectric ceramics.

[0039] The scanning electron micrograph of the piezoelectric ceramic section prepared in this embodiment is as follows image 3 As shown, its physical properties are: the Curie temperature is 323°C, the die...

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Abstract

The invention relates to a lead zirconate titanate-manganese bismuth based perovskite-lead based composite perovskite multi-component low-temperature sintered large-power piezoelectric ceramic, and apreparation method thereof. The composition general formula is (1-n)[(1-u-v)Pb(Zr<1-z>Ti<z>)O<3>+uBi(Mn<x>D<y>)O3+vPb(E<t>F<w>)O<3>]+nM. The lead zirconate titanate-manganese bismuth based perovskite-lead based composite perovskite multi-component low-temperature sintered large-power piezoelectric ceramic can be prepared through common ceramic preparation method, possesses rhombic ferroelectric phase and tetragonal ferroelectric phase morphotropic phase boundary, excellent piezoelectric performance and high mechanical quality factor, high Curie temperature, and low sintering temperature, and is suitable to be used in the field of large power energy transducers.

Description

technical field [0001] The invention relates to a piezoelectric ceramic and a preparation method thereof, more precisely a lead zirconate titanate-manganese bismuth-based perovskite-lead-based composite perovskite multi-component low-temperature sintered high-power piezoelectric ceramic and a preparation method thereof. Background technique [0002] High-power piezoelectric ceramics have high piezoelectric coefficients (d 33 ), electromechanical coupling coefficient (k p ) and mechanical quality factor (Q m ), are widely used in ultrasonic motors and ceramic transformers, etc. There are two main types of common high-power piezoelectric ceramic materials: lead zirconate (PbZrO 3 , referred to as PZ), lead titanate (PbTiO 3 , referred to as PT), and relaxor ferroelectric composition such as lead magnesium niobate (Pb (Mg 1 / 3 Nb 2 / 3 )O 3 , referred to as PMN), lead niobate zincate (Pb(Zn 1 / 3 Nb 2 / 3 )O 3 , referred to as PZN) etc. to form a ternary system, which is l...

Claims

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Application Information

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IPC IPC(8): C04B35/493C04B35/622C04B41/88
CPCC04B35/493C04B35/622C04B41/5116C04B41/88C04B2235/3206C04B2235/3224C04B2235/3232C04B2235/3255C04B2235/3268C04B2235/3272C04B2235/3279C04B2235/3281C04B2235/3284C04B2235/3294C04B2235/3298C04B2235/656C04B2235/6567
Inventor 左如忠黄廷伟祁核付健
Owner HEFEI UNIV OF TECH
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