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A kind of high temperature pin-pht piezoelectric ceramics and preparation method thereof

A technology of PIN-PHT and piezoelectric ceramics, applied in the field of high-temperature PIN-PHT piezoelectric ceramics and its preparation, can solve the problems of low Curie temperature, limited working temperature range, weak piezoelectric performance, etc., and achieve low preparation cost , Facilitate the effect of mass production

Active Publication Date: 2021-09-21
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the high-temperature piezoelectric ceramics studied at home and abroad are lead-free systems, but the piezoelectric properties of lead-free systems are generally weak (d 33 <100pC / N), not conducive to practical application
The piezoelectric and dielectric properties of lead-based perovskite piezoelectric ceramics are much higher than those of lead-free systems, but their Curie temperature is not high (T C <300℃), which limits the operating temperature range of the system

Method used

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  • A kind of high temperature pin-pht piezoelectric ceramics and preparation method thereof
  • A kind of high temperature pin-pht piezoelectric ceramics and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A preparation method of high-temperature PIN-PHT piezoelectric ceramics, comprising the following steps:

[0034] Step 1, put In 2 o 3 Powder and Nb 2 o 5 The powder is ball milled, dried, and calcined in sequence to obtain InNbO 4 Precursor powder;

[0035] Specifically follow the steps below:

[0036] Step 1.1, put In 2 o 3 Powder and Nb 2 o 5 The powder is weighed and mixed according to the molar ratio of 1:1 to form a mixed powder;

[0037] Step 1.2, the mixed powder obtained in step 1.1 is subjected to ball milling and drying in turn to obtain a mixed dry powder; the mixed powder and zirconia balls are added to the ball milling tank together and absolute ethanol is added to the ball milling tank as The ball milling medium is used for ball milling treatment. Wherein, the time of ball milling is 10h; the consumption of dehydrated alcohol is: every gram of powder material to be ball milled will add 1ml of dehydrated ethanol, the mass ratio of ball to materi...

Embodiment 2

[0054] A preparation method of high-temperature PIN-PHT piezoelectric ceramics, comprising the following steps:

[0055] Step 1, put In 2 o 3 Powder and Nb 2 o 5 The powder is ball milled, dried, and calcined in sequence to obtain InNbO 4 Precursor powder;

[0056] Specifically follow the steps below:

[0057] Step 1.1, put In 2 o 3 Powder and Nb 2 o 5 The powder is weighed and mixed according to the molar ratio of 1:1 to form a mixed powder;

[0058] Step 1.2, the mixed powder obtained in step 1.1 is subjected to ball milling and drying in turn to obtain a mixed dry powder; the mixed powder and zirconia balls are added to the ball milling tank together and absolute ethanol is added to the ball milling tank as The ball milling medium is used for ball milling treatment. Wherein, the time of ball milling is 10h; the consumption of dehydrated alcohol is: every gram of powder material to be ball milled will add 1ml of dehydrated ethanol, the mass ratio of ball to materi...

Embodiment 3

[0075] A preparation method of high-temperature PIN-PHT piezoelectric ceramics, comprising the following steps:

[0076] Step 1, put In 2 o 3 Powder and Nb 2 o 5 The powder is ball milled, dried, and calcined in sequence to obtain InNbO 4 Precursor powder;

[0077] Specifically follow the steps below:

[0078] Step 1.1, put In 2 o 3 Powder and Nb 2 o 5 The powder is weighed and mixed according to the molar ratio of 1:1 to form a mixed powder;

[0079] Step 1.2, the mixed powder obtained in step 1.1 is subjected to ball milling and drying in turn to obtain a mixed dry powder; the mixed powder and zirconia balls are added to the ball milling tank together and absolute ethanol is added to the ball milling tank as The ball milling medium is used for ball milling treatment. Wherein, the time of ball milling is 10h; the consumption of dehydrated alcohol is: every gram of powder material to be ball milled will add 1ml of dehydrated ethanol, the mass ratio of ball to materi...

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Abstract

The invention discloses a high-temperature PIN-PHT piezoelectric ceramic and a preparation method thereof, belonging to the technical field of electronic ceramic materials; the invention adopts a traditional solid-phase sintering method to prepare a chemical formula xPb(In 0.5 Nb 0.5 )O 3 ‑(1‑x)Pb(Hf 1‑y Ti y )O 3 , where 0.07≤x≤0.3, 0.53≤y≤0.6 piezoelectric ceramics. The present invention forms a ternary PIN-PHT piezoelectric ceramic by solid-solving the ferroelectric PIN with a small tolerance factor and the PHT with better electrical properties; it still has good piezoelectric ceramics while maintaining a relatively high Curie temperature. Electrical performance; solves the problem in the prior art that the piezoelectric performance and the Curie temperature cannot be combined.

Description

technical field [0001] The invention belongs to the technical field of electronic ceramic materials, and in particular relates to a high-temperature PIN-PHT piezoelectric ceramic and a preparation method thereof. Background technique [0002] In recent years, piezoelectric ceramics have been widely used in many fields such as aviation, automobile manufacturing, communications, energy and computers, and are important components of electronic components such as filters, sensors, transducers, and piezoelectric transformers. However, high temperature failure has always been the main problem that plagues the development of piezoelectric materials. Many electronic and electrical equipment require greater adaptability to the use range and use environment, such as high-power ultrasonic transducers used in industry such as ultrasonic processing and ultrasonic welding. , High-temperature ultrasonic positioning detectors used in nuclear reactors, fuel electric injection piezoelectric v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/49C04B35/622C04B35/64H01L41/187H01L41/39H10N30/093H10N30/853
CPCC04B35/49C04B35/622C04B35/64C04B2235/3255C04B2235/3286C04B2235/3296H10N30/8548H10N30/093
Inventor 闫养希李智敏侯鹅张茂林张东岩郝跃
Owner XIDIAN UNIV
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