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An ultra-low dielectric loss lead niobate manganate-lead niobate nickelate-lead zirconate titanate high piezoelectric ferroelectric ceramic and its preparation method

A technology of lead niobate manganate and lead niobate nickelate, applied in the field of piezoelectric ferroelectric materials, to achieve the effect of expanding the application range, reducing the driving voltage, and avoiding the effect of performance collapse

Active Publication Date: 2022-06-03
江苏省声学产业技术创新中心
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • An ultra-low dielectric loss lead niobate manganate-lead niobate nickelate-lead zirconate titanate high piezoelectric ferroelectric ceramic and its preparation method
  • An ultra-low dielectric loss lead niobate manganate-lead niobate nickelate-lead zirconate titanate high piezoelectric ferroelectric ceramic and its preparation method

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Embodiment 1

[0027] Embodiment 1: The chemical formula of an ultra-low dielectric loss lead manganate-lead niobate-lead zirconate titanate high-voltage electrical ferroelectric ceramic 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 the ultra-low dielectric loss lead manganate-lead niobate-lead zirconate titanate high-voltage electrical ferroelectric ceramics of Example 1 is carried out according to the following steps:

[0029] Step 1. Ingredients: with 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 was weighed, wherein the amount of PbO material was excessive by 1.5%, ball milled and dried; wherein MnO 2 , PbO, TiO 2 , ZrO 2 , NiO, Nb 2 O 5 They are all commercially available chemically pure raw materials (purity ≥99%);...

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Abstract

An ultra-low dielectric loss lead niobate-lead niobate-nickelate-lead zirconate titanate high-voltage ferroelectric ceramic and a preparation method thereof. The invention belongs to the field of piezoelectric ferroelectric materials. The invention aims to solve the technical problem of high dielectric loss of existing soft ceramics. The general chemical formula of a kind of lead niobate manganate-lead niobate-nickelate-lead zirconate titanate high piezoelectric ferroelectric ceramic of the present invention is x Pb(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=0.01‑0.03. Preparation method: according to the proportion of ceramic ingredients, then pre-fired, pressed, deglued, sintered, and then silver-fired and polarized to obtain lead niobate-manganate-lead niobate-zirconate with ultra-low dielectric loss Lead titanate piezoelectric ferroelectric ceramics. The method of the present invention has a low pre-firing temperature, and the lead niobate-manganese-niobate-lead-niobinickelate-lead zirconate-titanate relaxor ferroelectric ceramics are obtained by optimizing the formula and process, and the quasi-static d 33 While the piezoelectric constant measured by the tester reaches 760pC / N, the dielectric loss is lower than 0.5%, and the performance 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 manganate-lead niobate-lead zirconate titanate high-voltage electrical ferroelectric ceramic and a preparation method thereof. Background technique [0002] Informatization is an important characteristic of the 21st century. Electronic ceramics, as a new type of information materials, are developing rapidly; piezoelectric ceramics, as a kind of electronic ceramics, are used in high-tech fields such as high voltage, medical treatment, navigation, communication and intelligent systems. Get a wide range of applications. In recent years, with the integration, miniaturization and new technical fields of electronic information devices, higher requirements have also been placed on the performance of piezoelectric ceramic materials. The basis of research in the technical field has urgent market needs and great social value. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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 江苏省声学产业技术创新中心
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