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Low temperature sintering lithium antimonite doped quinary system piezoelectric ceramics material and method for preparing same

A technology for sintering lithium antimonate and piezoelectric ceramics, which is applied in piezoelectric/electrostrictive/magnetostrictive devices, circuits, electrical components, etc. The effect of large displacement output force

Inactive Publication Date: 2009-01-07
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The applicant has applied for a patent with the application number: 200810150177.4 and the title of the invention: five-element piezoelectric ceramic material containing lead niobium antimonate for the driver and its preparation method. It has excellent piezoelectric properties, but the sintering temperature is relatively high ( 1150℃~1200℃)

Method used

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  • Low temperature sintering lithium antimonite doped quinary system piezoelectric ceramics material and method for preparing same
  • Low temperature sintering lithium antimonite doped quinary system piezoelectric ceramics material and method for preparing same
  • Low temperature sintering lithium antimonite doped quinary system piezoelectric ceramics material and method for preparing same

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Embodiment 1

[0042] Take the used raw material 100g of producing product of the present invention as example, when x is 0.2, y is 0.01, with general formula 0.02Pb (Mg 1 / 2 W 1 / 2 )O 3 -0.01Pb(Sb 1 / 2 Nb 1 / 2 )]O 3 -0.38Pb(Ni 1 / 3 Nb 2 / 3 )O 3 -Pb 0.59 (Zr 0.38 Ti 0.21 )O 3 +0.2wt%LiSbO 3 The expressed raw materials and their weight proportions are:

[0043] Pb 3 o 4 67.06g

[0044] ZrO 2 13.75g

[0045] TiO 2 4.92g

[0046] Mg(OH) 2 · MgCO 3 ·6H 2 O 0.3g

[0047] WO 3 0.68g

[0048] Sb 2 o 5 0.22g

[0049] Nb 2 o 5 10.09g

[0050] NiO 2.78g

[0051] LiSbO 3 0.20g

[0052] Its preparation method is as follows:

[0053] 1. Preparation of lithium antimonate

[0054] Li first 2 CO 3 , Sb 2 o 5 Mix according to a molar ratio of 1:1, put it into a nylon tank, add absolute ethanol as a dispersant and zirconia balls as a ball mill...

Embodiment 2

[0074] Take the used raw material 100g of producing product of the present invention as example, x is 0.0, y is 0.01, with general formula 0.02Pb (Mg 1 / 2 W 1 / 2 )O 3 -0.01Pb(Sb 1 / 2 Nb 1 / 2 )]O 3 -0.38Pb(Ni 1 / 3 Nb 2 / 3 )O 3 -Pb 0.59 (Zr 0.38 Ti 0.21 )O 3 , the raw materials and their weight ratio represented are:

[0075] Pb 3 o 4 67.22g

[0076] ZrO 2 13.77g

[0077] TiO 2 4.93g

[0078] Mg(OH) 2 · MgCO 3 ·6H 2 O 0.3g

[0079] WO 3 0.68g

[0080] Sb 2 o 5 0.22g

[0081] Nb 2 o 5 10.10g

[0082] NiO 2.78g

[0083] LiSbO 3 0g

[0084] Its preparation method is as follows:

[0085] In preparation process step 1 of lithium antimonate, Li 2 CO 3 , Sb 2 o 5 Mix according to a molar ratio of 1:1, put it into a nylon tank, add absolute ethanol as a dispersant and zirconia balls as a ball milling medium, the weight ratio...

Embodiment 3

[0087] Take the used raw material 100g of producing product of the present invention as example, when x is 0.40, y is 0.03, use general formula 0.02Pb (Mg 1 / 2 W 1 / 2 )O 3 -0.03Pb(Sb 1 / 2 Nb 1 / 2 )]O 3 -0.36Pb(Ni 1 / 3 Nb 2 / 3 )O 3 -Pb 0.59 (Zr 0.38 Ti 0.21 )O 3 +0.40wt%LiSbO 3 The expressed raw materials and their weight proportions are:

[0088] Pb 3 o 4 66.84g

[0089] ZrO 2 13.69g

[0090] TiO 2 4.91g

[0091] Mg(OH) 2 · MgCO 3 ·6H 2 O 0.3g

[0092] WO 3 0.68g

[0093] Sb 2 o 5 0.64g

[0094] Nb 2 o 5 9.91g

[0095] NiO 2.63g

[0096] LiSbO 3 0.4g

[0097] Its preparation method is as follows:

[0098] In preparation process step 1 of lithium antimonate, Li 2 CO 3 , Sb 2 o 5 Mix according to a molar ratio of 1:1, put it into a nylon tank, add absolute ethanol as a dispersant and zirconia balls as a ball milli...

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Abstract

The invention provides low-temperature sintering lithium antimoniate mixed quinary system piezoelectric ceramics, which consists of the materials expressed with the following general expression: 0.02Pb(Mg1 / 2W1 / 2)O3-yPb(Sb1 / 2Nb1 / 2)O3-(0.39-y)Pb(Ni1 / 3Nb2 / 3)O3-Pb0.59(Zr0.38Ti0.21)O3+xLiSbO3. In the general expression, x is more than 0 percent by weight, but less than 0.40 percent by weight; y is more than or equal to 0 percent by weight, but less than or equal to 0.030mol. The preparation method of the lower-pressure sintering lithium antimoniate mixed quinary system peizoelectric ceramics comprises the processing steps of preparing lithium antimoniate, synthesizing ingredients, pre-burning, granulation, tabletting, batching-out, sintering, burning silver and polarization. According to the laboratory investigation result, the piezoelectric constant and the planar electromechanical coupling factor of the quinary system piezoelectric ceramics prepared are high; the low-temperature sintering performance is good. By comparing the low-temperature sintering antimoniate mixed quinary system with similar piezoelectric ceramics reported in literatures, the mechanical quality factor Qm and the dielectric loss tan Delta are significantly reduced; the piezoelectric constant d33 and the planar electromechanical coupling factor Kp are significantly improved; the sintering temperature is significantly reduced from 1200 DEG C to 900 DEG C; and the preparation process is simple with high repetitiveness, yield and low cost.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a piezoelectric device or an electrostrictive device. Background technique [0002] Piezoelectric material is a functional ceramic material that can convert mechanical energy and electrical energy into each other. Because of its high piezoelectric properties, easy processing into complex shapes, low price, and easy mass production, it has been widely used in electronic devices. However, the existing piezoelectric ceramic materials cannot meet the comprehensive requirements of practical applications on material performance. In order to improve the performance of piezoelectric ceramic materials, two ways are often used: one is to achieve the purpose of modification by adding a third or fourth element to the matrix material to form a new material; the other is to modify the material according to different doping ions. The effect of structure and performance is differ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/493C04B35/622H01L41/187H10N30/853
Inventor 杨祖培晁小练
Owner SHAANXI NORMAL UNIV
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