Modified lead zirconate titanate powder and preparation method thereof as well as piezoelectric ceramic forming blank

A lead zirconate titanate and piezoelectric ceramic technology, applied in the field of piezoelectric ceramics, can solve the problems of cracks and pores, difficult to form piezoelectric ceramics, low density, etc., and achieves good surface finish, good resin compatibility, Excellent rheological properties

Active Publication Date: 2018-04-20
GUANGDONG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the light-curing molding technology has higher requirements on ceramic powders. The piezoelectric ceramics prepared by 3D printing using existing ceramic powders are difficult

Method used

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  • Modified lead zirconate titanate powder and preparation method thereof as well as piezoelectric ceramic forming blank
  • Modified lead zirconate titanate powder and preparation method thereof as well as piezoelectric ceramic forming blank
  • Modified lead zirconate titanate powder and preparation method thereof as well as piezoelectric ceramic forming blank

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0042] The invention provides a method for preparing modified lead zirconate titanate powder, which comprises the following steps:

[0043] A) Weigh ZrO according to the molar ratio of Pb:Nb:Ni:Zr:Ti=(1-y-z):y:z:a:(1-a) in the chemical formula shown in formula I 2 , TiO 2 , Pb 3 O 4 , NiO and NbO are mixed to obtain a mixture;

[0044] B) The mixture in step A) is sequentially ball milled, rotary steamed and dried to obtain an intermediate;

[0045] C) Sintering the intermediate to obtain lead zirconate titanate powder having the chemical formula shown in formula I;

[0046] Pb 1-y-z Nb y Ni z (Zr a Ti 1-a )O 3 Formula I;

[0047] Among them, 0

[0048] In the present invention, the values ​​of y, z, and a are consistent with the above value ranges, and will not be repeated here.

[0049] In the present invention, the mixture is preferably placed in a polytetrafluoroethylene ball milling tank, and grinding balls and grinding media are added for ball mill...

Example Embodiment

[0074] Example 1

[0075] Follow the steps below to synthesize Pb 0.92 Nb 0.05 Ni 0.03 (Zr 0.52 Ti 0.48 )O 3 Powder.

[0076] (1) According to the molar ratio of each element of the modified lead zirconate titanate powder to be synthesized, Zr:Ti:Pb:Nb:Ni:=0.52:0.48:0.92:0.05:0.03, weigh ZrO 2 , TiO 2 And Pb 3 O 4 The main component raw materials are mixed with NiO and NbO modified additives to obtain mixture one.

[0077] (2) Put the mixture 1 described in feature (1) in a polytetrafluoroethylene ball mill tank, add zirconia grinding balls and absolute ethanol, and the mass ratio is: mixture 1: ball milling medium: water = 100%: 300%: 15%, the mixture was obtained after 3 hours of ball milling at 350r / min.

[0078] (3) Using a rotary evaporator to evaporate the absolute ethanol from the second mixture of feature (2), and then placing the evaporated mixture three in an oven at 60° C. for 8 hours to dry to obtain a mixture four.

[0079] (4) Put the mixture 4 described in feature (3) in...

Example Embodiment

[0080] Example 2

[0081] Follow the steps below to synthesize Pb 0.92 Nb 0.05 Ni 0.03 (Zr 0.60 Ti 0.40 )O 3 Powder.

[0082] (1) According to the molar ratio of each element of the modified lead zirconate titanate powder to be synthesized Zr:Ti:Pb:Nb:Ni:=0.60:0.40:0.92:0.05:0.03, weigh ZrO 2 , TiO 2 And Pb 3 O 4 The main component raw materials are mixed with NiO and NbO modified additives to obtain mixture one.

[0083] (2) Put the mixture 1 described in feature (1) in a polytetrafluoroethylene ball mill tank, add zirconia grinding balls and absolute ethanol, and the mass ratio is: mixture 1: ball milling medium: water = 100%: 300%: 15%, the mixture was obtained after 5 hours of ball milling at 350r / min speed.

[0084] (3) Use a rotary evaporator to evaporate the absolute ethanol from the second mixture of the feature (2), and then place the evaporated mixture three in an oven at 80° C. for 6 hours to dry to obtain a mixture four.

[0085] (4) Place the mixture 4 described in feature...

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Abstract

The invention provides modified lead zirconate titanate powder which has a chemical formula shown in a formula I: Pb1-y-zNbyNiz(ZraTil-a)O3, wherein y is more than 0 but less than or equal to 0.08, zis more than 0 but less than or equal to 0.08, and a is more than 0.51 but less than or equal to 0.6. The modified lead zirconate titanate powder provided by the invention has the beneficial effects that the lead zirconate titanate powder is modified through NiO and NbO, so that the obtained modified lead zirconate titanate powder has high compatibility with a resin material; and forming is easierin the stereo light curing process, so that a complex structure is formed. The invention further provides a preparation method of the modified lead zirconate titanate powder and a piezoelectric ceramic forming blank.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric ceramics, and in particular relates to a modified lead zirconate titanate powder, a preparation method thereof and a molded body of piezoelectric ceramics. Background technique [0002] Piezoelectric ceramics are information functional ceramic materials that can convert mechanical energy and electrical energy into each other, and are an important part of information functional materials. Because of its high electromechanical coupling coefficient, low price, and easy mass production, it has been widely used in communication, acoustics, optics and other aspects. For example, ceramic filters, ceramic discriminators and ceramic attenuators used in communication equipment; underwater acoustic transducers and fish detectors used in underwater communication and detection; speakers used in electroacoustic devices, In addition, there are many devices used in precision measurement, navigation, ultras...

Claims

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Application Information

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IPC IPC(8): C04B35/493C04B35/626C04B26/06C04B26/14C04B26/16C04B26/18C04B26/10
CPCC04B26/06C04B26/14C04B26/16C04B26/18C04B35/493C04B35/6261C04B35/62615C04B35/62645C04B35/62655C04B35/62675C04B2235/3251C04B2235/3279C04B24/282C04B24/008C04B2103/408C04B14/36
Inventor 陈燕伍尚华包秀兰蒋强国姜知水欧明文理
Owner GUANGDONG UNIV OF TECH
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