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Plumbum niobate-nicklate (PNN)-plumbum zirconate titanate (PZT) piezoelectric ceramic capable of being sintered at low temperature and preparation method thereof
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A low-temperature sintering technology of lead niobate nickelate, applied to piezoelectric/electrostrictive/magnetostrictive devices, circuits, electrical components, etc., can solve the problems of performance deterioration and achieve the effect of reducing the sintering temperature
Inactive Publication Date: 2012-09-12
TIANJIN UNIV
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Problems solved by technology
However, due to its excessive pursuit of low-temperature sintering when reducing the sintering temperature, the performance is seriously deteriorated, which is fatal to piezoelectric ceramics
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preparation example Construction
[0032] The preparation method of the present invention is as follows:
[0033] (1) Ingredients
[0034] Raw material Pb 3 o 4 、Ni 2 o 3 , Nb 2 o 5 , ZrO 2 、TiO 2 , CuO by 0.3Pb(Ni1 / 3 Nb 2 / 3 )O 3 -0.7Pb(Zr 0.44 Ti 0.56 )O 3 +xCuO, wherein 0<x≤0.03 stoichiometric ratio, put into the ball mill tank after mixing, the ball milling medium is water and agate balls, the weight ratio of ball:material:water is 2:1:0.6, ball milling 4h, rotating speed is 750 rpm, put the mixture into an oven to dry at 80°C, then put it into a mortar for grinding, and pass through a 40-mesh sieve;
[0035] (2) synthesis
[0036] Put the ground and sieved powder in step (1) into a crucible, compact it, cover it, seal it, synthesize it in a muffle furnace at 900°C, keep it warm for 2 hours, cool it down to room temperature naturally, and take it out of the furnace;
[0037] (3) Tablet
[0038] Secondary ball milling, drying and sieving of the synthetic material in step (2), adding 5wt% to 7w...
specific Embodiment
[0050] x=0.01, the sintering temperature is 900°C, 950°C, 1000°C, 1050°C, 1100°C, which are respectively recorded as Examples 1-1, 1-2, 1-3, 1-4, 1-5
[0051] x=0.02, the sintering temperature is 900°C, 950°C, 1000°C, 1050°C, 1100°C, respectively recorded as Examples 2-1, 2-2, 2-3, 2-4, 2-5;
[0052] x=0.03, the sintering temperature is 900°C, 950°C, 1000°C, 1050°C, and 1100°C, which are respectively recorded as Examples 3-1, 3-2, 3-3, 3-4, and 3-5;
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Abstract
The invention relates to a plumbum niobate-nicklate (PNN)-plumbum zirconatetitanate (PZT) piezoelectric ceramic capable of being sintered at low temperature. The chemical formula of the PNN-PZT piezoelectric ceramic is 0.3Pb(Ni1 / 3Nb2 / 3)O3-0.7Pb(Zr0.44Ti0.56)O3+xCuO, wherein x is more than 0 and is less than or equal to 0.03. According to the PNN-PZT piezoelectric ceramic, a 0.3 PNN-0.7 PZT ternary piezoelectric ceramic material with high comprehensive performance is prepared by the conventional oxide mixing method and sintering CuO at low temperature under normal pressure on the basis of a Pb(Ni1 / 3Nb2 / 3)O3-Pb(Zr0.44Ti0.56)O3 system, so that the piezoelectric ceramic which can be sintered at low temperature and has high comprehensive performance is provided. The PNN-PZT piezoelectric ceramic is mainly applied to electronic devices of multilayer piezoelectric transformers, multilayer ceramic capacitors and the like which are sintered jointly at the low temperature.
Description
technical field [0001] The present invention relates to a ceramic composition characterized by components, in particular to lead niobate-lead zirconate titanate (PNN-PZT) piezoelectric ceramics. Background technique [0002] Piezoelectric material is a functional ceramic material that converts mechanical energy and electrical energy, and it is a material with piezoelectric properties. Piezoelectric ceramics are information functional ceramic materials that can convert mechanical energy and electrical energy into each other. In addition to piezoelectric properties, piezoelectric ceramics also have dielectric and elastic properties. Piezoelectric ceramic materials have been widely used in high-tech fields such as information, aerospace, laser and biology and industrial production due to their excellent dielectric and elastic properties, simple preparation process and low cost. [0003] PZT-based piezoelectric ceramics have the advantages of convenient manufacture, low cost, e...
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