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Manganese-doped cerium lithium calcium titanoniobate-based ceramic material and preparation method thereof

A technology of bismuth calcium lithium titanium niobate and ceramic materials, applied in the field of material science and engineering, to achieve the effect of improving piezoelectric performance

Inactive Publication Date: 2016-08-10
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few reports on the compound substitution and doping of A and B sites in CBT-based ceramics

Method used

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  • Manganese-doped cerium lithium calcium titanoniobate-based ceramic material and preparation method thereof
  • Manganese-doped cerium lithium calcium titanoniobate-based ceramic material and preparation method thereof
  • Manganese-doped cerium lithium calcium titanoniobate-based ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Preparation of CBT-based ceramic powder by solid phase method

[0042] The raw materials were divided according to the general formula Ca 0.85 (Li,Ce) 0.075 Bi 4 Ti 4 o 15 -0.01MnCO 3 , x=0.15, y=0.00, z=0.01, number 1 # , carry out weighing and batching, put it in a polyurethane ball mill tank, use absolute ethanol as the dispersion medium, and use a planetary ball mill for 12 ball mills at a speed of 300rpm, bake it under a drying lamp for 3 hours to make it dry, and then control the temperature in the program Continuously raise the temperature to 850°C in a box-type furnace and hold for 2 hours to obtain manganese-doped titanium bismuth niobate calcium lithium cerium-based ceramic powder;

[0043] (2) Secondary ball milling

[0044] Put the prepared manganese-doped titanium bismuth niobate calcium lithium cerium-based ceramic powder in a polyurethane ball mill tank, use absolute ethanol as the dispersion medium, and use a planetary ball mill for 12 hours a...

Embodiment 2

[0052] (1) Preparation of CBT-based ceramic powder by solid phase method

[0053] Raw material according to general formula Ca 0.85 (Li,Ce) 0.075 Bi 4 Ti 3.98 Nb 0.02 o 15 -0.01MnCO 3 , x=0.15, y=0.02, z=0.01, carry out weighing, batching, put in the polyurethane ball mill jar, take dehydrated alcohol as dispersion medium, after ball milling with planetary ball mill 12, the rotating speed is 300rpm, bake under the drying lamp Bake for 3 hours to make it dry, then continuously raise the temperature to 850°C in a programmable temperature-controlled box furnace, and keep it for 2 hours to obtain manganese-doped titanium bismuth niobate calcium lithium cerium-based ceramic powder;

[0054] (2) Secondary ball milling

[0055] Put the prepared manganese-doped titanium bismuth niobate calcium lithium cerium-based ceramic powder in a polyurethane ball mill tank, use absolute ethanol as the dispersion medium, and use a planetary ball mill for 12 hours after ball milling at a spe...

Embodiment 3

[0065] (1) Preparation of CBT-based ceramic powder by solid phase method

[0066] The raw materials were divided according to the general formula Ca 0.85 (Li,Ce) 0.075 Bi 4 Ti 3.9 Nb 0.1 o 15 -0.01MnCO 3 , x=0.15, y=0.10, z=0.01, number 3 # , carry out weighing and batching, put it in a polyurethane ball mill tank, use absolute ethanol as the dispersion medium, and use a planetary ball mill for 12 ball mills at a speed of 300rpm, bake it under a drying lamp for 3 hours to make it dry, and then control the temperature in the program Continuously raise the temperature to 850°C in a box-type furnace and hold for 2 hours to obtain manganese-doped titanium bismuth niobate calcium lithium cerium-based ceramic powder;

[0067] (2) Secondary ball milling

[0068] Put the prepared manganese-doped titanium bismuth niobate calcium lithium cerium-based ceramic powder in a polyurethane ball mill tank, use absolute ethanol as the dispersion medium, and use a planetary ball mill for ...

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Abstract

The invention discloses a manganese-doped titanium-bismuth-calcium-lithium-cerium-niobate-based piezoelectric ceramic material and a preparation method thereof. Powder materials; Manganese-doped titanium bismuth niobate calcium lithium cerium based ceramics are prepared through traditional electronic ceramic preparation processes such as granulation and tableting, debinding, sintering and silver testing. The sintering temperature of calcium bismuth titanate-based (CBT) ceramics is reduced by the complex substitution of A-site lithium, cerium (Li, Ce) and B-site niobium (Nb), and its piezoelectric properties are significantly improved and reduced at lower sintering temperatures. Its dielectric loss plays an important role in the practical application of CBT-based ceramic materials in high-temperature fields.

Description

technical field [0001] The invention relates to a bismuth calcium lithium cerium titanate niobate-based ceramic material and a preparation method thereof. Specifically, a certain content of lithium, cerium and niobium is simultaneously mixed in the preparation process of the calcium bismuth titanate (CBT)-based material. , manganese (Li, Ce, Nb, Mn) elements, and obtain high-voltage electrical properties at lower sintering temperatures. The invention belongs to the field of material science and engineering. Background technique [0002] With the rapid development of modern science and technology, many industrial sectors and scientific research institutions such as energy, automobile, aerospace, petrochemical, geological exploration, atomic energy, etc. urgently need electronic equipment that can work at higher temperatures. Bismuth-containing layered piezoelectric ceramics have the advantages of high Tc, low dielectric constant, obvious anisotropy of electromechanical coupl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/453C04B35/622C04B41/88
CPCC04B35/453C04B35/622C04B41/009C04B41/5116C04B41/88C04B2235/3203C04B2235/3208C04B2235/3229C04B2235/3232C04B2235/3251C04B2235/3262C04B2235/96
Inventor 朱建国辛德琼陈强刘洪肖定权
Owner SICHUAN UNIV
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