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Manganese-doped niobium nickel-lead zirconate titanate piezoelectric ceramic and preparation method thereof

A lead zirconate titanate and piezoelectric ceramic technology, applied in the field of piezoelectric ceramics, can solve the problems of small coercive field, limited application range of materials, easy generation of pyrochlore and the like, and achieve the effect of broadening the application field

Inactive Publication Date: 2013-02-13
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PNN-PZT piezoelectric ceramics have a mechanical quality factor ( Q m ) is lower, the coercive field ( E c ) is small, the sintering process is easy to produce pyrochlore and other disadvantages, which limits the application range of this system material

Method used

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  • Manganese-doped niobium nickel-lead zirconate titanate piezoelectric ceramic and preparation method thereof
  • Manganese-doped niobium nickel-lead zirconate titanate piezoelectric ceramic and preparation method thereof
  • Manganese-doped niobium nickel-lead zirconate titanate piezoelectric ceramic and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0022] The present invention analyzes pure grade PbO, NiO, Nb 2 o 5 , ZrO 2 、TiO 2 and MnO 2 As raw material, according to Pb[(Ni 1 / 3 Nb 2 / 3 ) x (Zr y Ti 1-y ) 1-x ]O 3 + z MnO 2 ,in x =0.5, y=0.35, z = 0.5% chemical composition ingredients, and weigh 1wt% PbO to add to the ingredients; use ethanol as the ball milling medium, use planetary ball mill for 10h, after drying, dry press the obtained powder and place it in a sealed crucible at 1100°C Pre-fired for 4 hours; after pre-fired, the ceramic block was crushed, ball milled, sieved with 150 mesh, added with 3wt% PVA binder, shaped, discharged at 800°C for 5 hours, and then sintered at 1200°C for 2 hours. figure 1 The XRD patterns of the prepared manganese-doped niobium-nickel-lead zirconate titanate ceramics show that the ceramics have a typical perovskite structure without pyrochlore phase or other impurity phases. figure 2 It is the SEM photo of the prepared manganese-doped niobium-nickel-lead zirconate ti...

Embodiment 2

[0024] The present invention analyzes pure grade PbO, NiO, Nb 2 o 5 , ZrO 2 、TiO 2 and MnO 2 As raw material, according to Pb[(Ni 1 / 3 Nb 2 / 3 ) x (Zr y Ti 1-y ) 1-x ]O 3 + z MnO 2 ,in x =0.5, y=0.35, z =1.0% chemical composition ingredients, and weigh 1wt% PbO to add to the ingredients; use ethanol as the ball milling medium, use the planetary ball mill to mill for 10h, after drying, dry press the obtained powder and place it in a sealed crucible at 1100°C Pre-fired for 4 hours; after pre-fired, the ceramic block was crushed, ball milled, sieved with 150 mesh, added with 3wt% PVA binder, shaped, discharged at 800°C for 5 hours, and then sintered at 1200°C for 2 hours. Polish the fired ceramic sheet on both sides to a thickness of 0.8mm, and coat the silver electrode with screen printing. After firing silver at 500°C for 15 minutes, apply a voltage of 3kV / mm in silicone oil at 50°C for 10 minutes to polarize. After standing for 24 hours, conduct electrical perform...

Embodiment 3

[0026] The present invention analyzes pure grade PbO, NiO, Nb 2 o 5 , ZrO 2 、TiO 2 and Mn 2 o 3 As raw material, according to Pb[(Ni 1 / 3 Nb 2 / 3 ) x (Zr y Ti 1-y ) 1-x ]O 3 + z MnO 2 ,in x =0.5, y=0.5, z =1.5% stoichiometric ratio weighing, and weighed 1wt%PbO to add ingredients; use ethanol as ball milling medium, use planetary ball mill ball mill for 10h, after drying, dry press the obtained powder and place it in a sealed crucible for 1100 Pre-fired at ℃ for 4 hours; after pre-fired, the ceramic block was crushed, ball milled, sieved at 150 mesh, added with 3wt% PVA binder, molded, ejected at 800℃ for 5 hours, and then sintered at 1200℃ for 2 hours. Polish the fired ceramic sheet on both sides to a thickness of 0.8mm, and coat the silver electrode with screen printing. After firing silver at 500°C for 15 minutes, apply a voltage of 3kV / mm in silicone oil at 50°C for 10 minutes to polarize. After standing for 24 hours, conduct electrical performance test, the ...

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Abstract

The invention discloses a manganese-doped niobium nickel-lead zirconate titanate piezoelectric ceramic material and a preparation method thereof. The composition of the piezoelectric ceramic material is Pb[(Ni1 / 3Nb2 / 3)x(ZryTi1-y)1-x]O3+zM, wherein in the formula, x, y and z represent the molar content; M is manganese or oxide of manganese; and x is more than 0.0 and less than 0.9, y is more than 0.0 and less than 0.8, and z is more than 0.0 and less than 0.3. The novel piezoelectric ceramic material with excellent comprehensive performance is obtained by preserving heat and sintering for 0.5 to 10h at the temperature of 1,000 to 1,300 DEG C by the traditional solid-phase sintering process; and the piezoelectric ceramic material has a relatively high mechanical quality factor (Qm-670), a good ferroelectric property (Ec-4.3kV / cm) and a good piezoelectric property (d33-495pC / N). The novel piezoelectric ceramic material is mainly applied to devices such as micro-actuators, piezoelectric transducers, surface wave filters and piezoelectric sensors.

Description

technical field [0001] The invention relates to a piezoelectric ceramic, in particular to a manganese-doped niobium-nickel-lead zirconate titanate piezoelectric ceramic and a preparation method thereof. Background technique [0002] In the 1880s, the piezoelectric effect of tourmaline was first discovered by the brothers Piere-Curie and Jacques-Curie, and the history of piezoelectricity began. Epoch-making progress in piezoelectric materials and their applications is attributed to BaTiO during World War II 3 Discovery and application of piezoelectric ceramics. BaTiO 3 Ceramic piezoelectric benefits are strong, but there are disadvantages such as low Curie temperature (about 120°C), difficulty in sintering, phase transition near room temperature, and poor frequency stability. In 1952, the United States B. Jaffe (B. Jaffe) and others discovered the ratio of BaTiO 3 Lead zirconate titanate (Pb[Zr x Ti 1-x ]O 3 , abbreviated as PZT) binary piezoelectric ceramics, which ha...

Claims

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Application Information

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IPC IPC(8): C04B35/491C04B35/622
Inventor 裘进浩杜建周朱孔军季宏丽
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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