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Low-resistivity pyroelectric ceramic material with temperature ageing resistance and preparation method thereof

A technology of pyroelectric ceramics and ceramic powder, which is applied in the field of ceramic materials, can solve the problems of low resistance and no consideration, and achieve the effects of high efficiency, low cost, and widening the application temperature range

Active Publication Date: 2012-06-27
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These published articles do not consider the need to maintain low resistance and the need to improve the temperature aging resistance as pyroelectric ceramic materials

Method used

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  • Low-resistivity pyroelectric ceramic material with temperature ageing resistance and preparation method thereof
  • Low-resistivity pyroelectric ceramic material with temperature ageing resistance and preparation method thereof
  • Low-resistivity pyroelectric ceramic material with temperature ageing resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (Pb 1.005 )(Sb 2 / 3 mn 1 / 3 ) 0.05 (Zr 0.85 Ti 0.15 ) 0.95 o 3 +0.5at% Mn

[0034] Calculate the amount of each component according to the composition of the formula and weigh Pb 3 o 4 , ZrO 2 、TiO 2 , MnCO 3 , Sb 2 o 3 As the raw material, add 0.8 times of the total weight of the raw material in deionized water, and ball mill and mix for 24 hours to make the components evenly mixed. Dry it, add 10wt% deionized water, and keep the briquette at 830°C for 2 hours to synthesize. Crush, pass through a 30-mesh sieve, and then finely grind for 24 hours with wet ball milling, dry the powder, then add 6wt% PVA binder, granulate, age for 24 hours, pass through a 30-mesh sieve, press and form, at 800 Plastic discharge at ℃. In order to prevent the volatilization of the lead component, put the green body into a triple inverted alumina crucible, cover the green body with ceramic powder with the same composition, cover the ground cover, heat up to 1260°C, and keep it ...

Embodiment 2

[0036] (Pb 1.005 )(Sb 2 / 3 mn 1 / 3 ) 0.05 (Zr 0.85 Ti 0.15 ) 0.95 o 3 +0.5at.% Mn +0.2at.%Cr

[0037] Calculate the amount of each component according to the above formula composition and weigh Pb 3 o 4 , ZrO 2 、TiO 2 , MnCO 3 , Sb 2 o 3 、Cr 2 o 3 As a raw material, the preparation method of Example 1 was repeated. Test its dielectric, pyroelectric and device performance, see the test results figure 2 , Table 1, Table 2 and Table 3. Compared with Example 1, 0.2 at% Cr is added to the prepared material, and it can be seen from Tables 1, 2 and 3 that the temperature aging resistance is improved.

Embodiment 3

[0039] (Pb 1.005 )(Sb 2 / 3 mn 1 / 3 ) 0.01 (Zr 0.85 Ti 0.15 ) 0.99 o 3 +0.5at.% Mn +0.2at.%Cr

[0040] Calculate the amount of each component according to the above formula composition and weigh Pb 3 o 4 , ZrO 2 、TiO 2 , MnCO 3 , Sb 2 o 3 、Cr 2 o 3 As a raw material, the preparation method of Example 1 was repeated. Test its dielectric, pyroelectric and device performance, see the test results figure 2 , Table 1, Table 2 and Table 3. Compared with Example 1, 0.2 at% Cr is added to the prepared material, and it can be seen from Tables 1, 2 and 3 that the temperature aging resistance is improved.

[0041] Table 1

[0042] Dielectric and pyroelectric properties of materials at room temperature

[0043]

[0044] Referring to Table 1 above, it can be seen that the pyroelectric ceramic material of the present invention has a stable and moderate pyroelectric coefficient, which is concentrated in (3.3-4.5)*10 -8 C / cm 2 *K is around, and has a low dielectric con...

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Abstract

The invention relates to a low-resistivity pyroelectric ceramic material with temperature ageing resistance and a preparation method thereof. According to the invention, the chemical composition of the pyroelectric ceramic material is mainly as follows: Pb1+delta (Sb2 / 3Mn1 / 3)y(ZrxTi1-x)1-yO3+wat%A; and in the formula, A is at least one selected from Mn and Cr; delta is -0.05 to 0.05; w is 0-10 (preferably 0-2); x is 0.75-0.90; and y is 0.01-0.25.

Description

technical field [0001] The invention belongs to the field of ceramic materials, and relates to a pyroelectric ceramic material, in particular to a lead antimony manganate-lead zirconate titanate (PMS-PZT)-based pyroelectric ceramic material and a preparation method thereof. Background technique [0002] The pyroelectric effect refers to the effect that a material with spontaneous polarization generates an electric charge after a temperature change. Utilizing this effect can be used in infrared detection, thermal-electrical energy conversion, thermal Joule applications, and the like. Commonly used pyroelectric materials are divided into single crystal, ceramics, and polymers according to their structure. Single crystals are mainly represented by niobium tantalate, lithium tantalate, and lead magnesium niobate, while ceramics are mainly represented by lead zirconate titanate (PZT) and barium strontium titanate (BST) systems. Among them, in the lead zirconate titanate system,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/49C04B35/491C04B35/622
Inventor 姚春华郭少波董显林王根水曹菲陈建和
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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