Modified lead niobate nickelate-lead zirconate titanate piezoelectric ceramic and preparation method thereof

A technology of lead niobate and lead zirconate titanate is applied in the manufacture/assembly of piezoelectric/electrostrictive devices, piezoelectric/electrostrictive/magnetostrictive devices, circuits, etc. Problems such as poor piezoelectric performance, to achieve the effect of excellent piezoelectric dielectric properties, high Curie temperature and electromechanical coupling coefficient

Inactive Publication Date: 2019-08-16
重庆胜普昂凯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the invention patent with the publication number CN102659404A discloses low-temperature sintered lead niobate nickelate-lead zirconate titanate piezoelectric ceramics and its preparation method. This technology discloses raw materials Pb3O4, Ni2O3, Nb2O5, ZrO2, TiO2 and CuO. , drying, synthesis, tableting, debinding, sintering, silver polarization and other processes, but its dielectric properties and piezoelectric properties are not good

Method used

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  • Modified lead niobate nickelate-lead zirconate titanate piezoelectric ceramic and preparation method thereof
  • Modified lead niobate nickelate-lead zirconate titanate piezoelectric ceramic and preparation method thereof
  • Modified lead niobate nickelate-lead zirconate titanate piezoelectric ceramic and preparation method thereof

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Embodiment 1

[0023] A method for preparing a modified lead niobate-lead zirconate titanate piezoelectric ceramic, comprising the following steps:

[0024] (1) Ingredients: commercially available analytically pure PbO, NiO, Nb 2 o 5 、TiO 2 , ZrO 2 、Nd 2 o 3 , SrCO 3 , Y 2 o 3 and Sb 2 o 3 As a raw material, after stoichiometric proportioning, put it into a ball mill tank and use absolute ethanol as a medium to wet grind for 4 hours to obtain a wet material and dry it;

[0025] (2) Pre-calcination: put the dried mixed powder in step (1) in an alumina crucible, compact it, cover it, calcinate it in a box furnace at 800°C for 2 hours, and repeat wet grinding once to obtain pre-calcined powder material;

[0026] (3) Tablet pressing: After the calcined powder is ground and pulverized, then use absolute ethanol as a solvent for wet grinding for 8 hours, and after drying, add 5wt% to 10wt% polyvinyl alcohol (PVA) to granulate into fluid fine sand particles , under a pressure of 10-20MP...

Embodiment 2

[0031] A modified lead niobate-lead zirconate titanate piezoelectric ceramic, the chemical composition of which is:

[0032] Pb 1-x Ndx(Ni 1 / 3 Nb 2 / 3 )0.326 (Zr y Ti 1-y )0.674O 3 +3%PbO+3%NiO+zwt%A; according to the preparation method of Example 1, according to different stoichiometry, wherein x=0.005, y=0.426, z=0.

Embodiment 3

[0034] A modified lead niobate-lead zirconate titanate piezoelectric ceramic, the chemical composition of which is:

[0035] Pb 1-x Ndx(Ni 1 / 3 Nb 2 / 3 )0.326 (Zr y Ti1-y )0.674O 3 +3%PbO+3%NiO+zwt%A; According to the preparation method of Example 1, according to different stoichiometry, wherein x=0.01, y=0.426, z=0.

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Abstract

The present invention disclosed a modified nickel nickel -leading leader -titanic acid lead and voltage ceramics. The chemical group is divided into: PB 1‑x Me x Ni 1 / 3 NB 2 / 3 Cure 0.326 (ZR y TI 1‑y Cure 0.674 O 3 +3 % PBO+3 % NIO+ZWT % A; ME in the formula is any or two types in 锶 and 钕, A is any type of metal oxide of 锑 and 钇.The invention piezoelectric ceramics can form a solid -soluble solid solid -soluble through the mix of 锶 and 钕, 锑 or 钇, and obtain a 0.326pnn‑0.647pzt piezoelectric ceramics with good comprehensive performance.Highly rested temperature and electromechanical coupling coefficients; at the same time, the preparation method is simple, the raw materials are easy to obtain, and the practicality of industrial is.

Description

technical field [0001] The invention relates to the field of electronic component manufacturing, in particular to a modified lead niobate-lead zirconate titanate piezoelectric ceramic and a preparation method thereof. Background technique [0002] Piezoelectric ceramics are a class of widely used functional ceramic materials. Because of their stable mechanical properties, excellent electrical properties, simple preparation process, and low cost, they are widely used in lasers, biology, military information, and aviation. Following the discovery of barium titanate piezoelectric ceramics in World War II, the lead zirconate titanate (PZT) system was discovered in the early 1950s, and PZT series piezoelectric ceramics have been most widely used in the field of piezoelectricity. However, the commonly used piezoelectric materials are mainly lead zirconate (PZ), lead titanate (PT) and lead magnesium niobate (PMN), lead niobate zincate (PZN) and lead niobate nickelate (PNN). A mult...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/493C04B35/622H01L41/187H01L41/43
CPCC04B35/493C04B35/622C04B2235/96C04B2235/3225C04B2235/3224C04B2235/3213C04B2235/3296C04B2235/3294C04B2235/3279C04B2235/3251C04B2235/3232C04B2235/3244H10N30/853H10N30/097
Inventor 曾祥明冯小东廖建中刘振华陈世钗刘炉李瑞峰蹇胜勇徐莉莲杨静
Owner 重庆胜普昂凯科技有限公司
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