Modified lead nickel niobate-lead zirconate titanate piezoelectric ceramics and preparing method thereof

A technology of lead niobate nickelate and lead zirconate titanate, which is applied in the manufacture/assembly of piezoelectric/electrostrictive devices, piezoelectric/electrostrictive/magnetostrictive devices, circuits, etc., which can solve the problems of dielectric properties and Poor piezoelectric performance and other problems, to achieve the effect of excellent piezoelectric dielectric properties, high Curie temperature and electromechanical coupling coefficient

Inactive Publication Date: 2016-12-14
重庆胜普昂凯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 nickel niobate-lead zirconate titanate piezoelectric ceramics and preparing method thereof
  • Modified lead nickel niobate-lead zirconate titanate piezoelectric ceramics and preparing method thereof
  • Modified lead nickel niobate-lead zirconate titanate piezoelectric ceramics and preparing 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 ) 0.674 o 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 Ti 1-y ) 0.674 o 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 invention discloses modified lead nickel niobate-lead zirconate titanate piezoelectric ceramics. The chemical components are as follow: Pb1-xMex(Ni1 / 3Nb2 / 3)0.326(ZryTi1-y)0.674O3+3%PbO+3% NiO+zwt%A; wherein Me represents any one or two of strontium and neodymium, and A represents any one of antimony oxide and yttrium oxide. As strontium or neodymium and antimony or yttrium are doped into the piezoelectric ceramics, a substitution solid solution is formed, and the piezoelectric ceramics with good comprehensive performance of 0.326 PNN-0.647 PZT are obtained. The piezoelectric ceramics have excellent piezoelectric and dielectric properties, the high Curie temperature and a high electromechanical coupling coefficient. The preparing method is simple, raw materials are easy to obtain, and the preparing method has industrial applicability.

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 Applications(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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