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Lead manganate niobate-lead nickelate niobate-lead zirconate titanate high-voltage ferroelectric ceramic with ultralow dielectric loss and preparation method thereof

A technology of lead niobate manganate and lead niobate nickelate, applied in the field of piezoelectric materials

Active Publication Date: 2021-07-30
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problem of high dielectric loss of existing soft ceramics, and provides an ultra-low dielectric loss lead niobate manganate-lead niobate nickelate-lead zirconate titanate high piezoelectric ferroelectric ceramic and its preparation method

Method used

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  • Lead manganate niobate-lead nickelate niobate-lead zirconate titanate high-voltage ferroelectric ceramic with ultralow dielectric loss and preparation method thereof
  • Lead manganate niobate-lead nickelate niobate-lead zirconate titanate high-voltage ferroelectric ceramic with ultralow dielectric loss and preparation method thereof

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Embodiment 1

[0027] Embodiment 1: The chemical formula of a kind of ultra-low dielectric loss lead niobate manganate-lead niobate nickelate-lead zirconate titanate piezoelectric ferroelectric ceramics of this embodiment is xPb(Mn 1 / 3 Nb 2 / 3 )O 3 -(0.55-x)Pb(Ni 1 / 3 Nb 2 / 3 )O 3 -0.135PbZrO 3 -0.315PbTiO 3 , where x=0.1, 0.2, 0.3.

[0028] The method for preparing a kind of ultra-low dielectric loss lead niobate manganate-lead niobate nickelate-lead zirconate titanate piezoelectric ferroelectric ceramics of Example 1 is carried out according to the following steps:

[0029] Step 1. Ingredients: MnO 2 , PbO, TiO 2 , ZrO 2 , NiO, Nb 2 o 5 As a raw material, according to xPb(Mn 1 / 3 Nb 2 / 3 )O 3 -(0.55-x)Pb(Ni 1 / 3 Nb 2 / 3 )O 3 -0.135PbZrO 3 -0.315PbTiO 3 The stoichiometric ratio of raw materials is weighed, wherein the amount of PbO is 1.5% in excess, and dried by ball milling; where MnO 2 , PbO, TiO 2 , ZrO 2 , NiO, Nb 2 o 5 All are commercially available chemically pure ra...

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Abstract

The invention relates to lead manganate niobate-lead nickelate niobate-lead zirconate titanate high-voltage ferroelectric ceramic with ultralow dielectric loss and a preparation method thereof. The invention belongs to the field of ferroelectric materials. The invention aims to solve the technical problem of high dielectric loss of an existing soft ceramic. The chemical general formula of the lead manganate niobate-lead nickel niobate-lead zirconate titanate high-voltage electric ferroelectric ceramic with ultralow dielectric loss is x Pb (Mn1 / 3Nb2 / 3) O3-(0.55-x) Pb (Ni1 / 3Nb 2 / 3) O3-0.135 PbZrO3-0.315 PbTiO3, wherein x is equal to 0.01-0.03. The preparation method comprises the following steps of: proportioning components according to the proportion of the ceramic components; sequentially carrying out pre-sintering, tabletting, glue discharging and sintering; carrying out silver sintering and polarization to obtain the lead manganate niobate-lead nickelate niobate-lead zirconate titanate high-voltage ferroelectric ceramic with ultralow dielectric loss. According to the method, the pre-sintering temperature is low, the lead manganate niobate-lead nickelate niobate-lead zirconate titanate relaxor ferroelectric ceramic is sintered through optimization of a formula and a process, the piezoelectric constant of the ceramic, measured by a quasi-static d33 tester reaches 760 pC / N, meanwhile, the dielectric loss of the ceramic is lower than 0.5%, and the performance of the ceramic is excellent.

Description

technical field [0001] The invention belongs to the field of piezoelectric ferroelectric materials, in particular to an ultra-low dielectric loss lead niobate manganate-lead niobate nickelate-lead zirconate titanate high-voltage ferroelectric ceramic and a preparation method thereof. Background technique [0002] Informatization is an important era characteristic of the 21st century. As a large class of new information materials, electronic ceramics are developing rapidly; Get a wide range of applications. In recent years, with the integration, miniaturization and new technical fields of electronic information devices, higher requirements have been placed on the performance of piezoelectric ceramic materials. The foundation of research in the technical field has urgent market demand and significant social value. [0003] Piezoelectric ceramics based on lead zirconate titanate [Pb(ZrxTi1-x)O3, PZT] are widely used in actuators, sensors, piezoelectric transformers, microelec...

Claims

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Application Information

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IPC IPC(8): C04B35/499C04B35/622C04B41/88C04B41/91
CPCC04B35/499C04B35/622C04B41/5116C04B41/88C04B41/53C04B41/91C04B41/009C04B2235/3267C04B2235/3296C04B2235/3232C04B2235/3244C04B2235/3251C04B2235/3279C04B2235/602C04B2235/656C04B2235/6562C04B2235/6567C04B41/4535C04B41/0072
Inventor 边浪曹文武
Owner HARBIN INST OF TECH
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