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High-tin-content lead lanthanum zirconate titanate stannate thick film ceramic, and preparation method and application thereof

A technology of lanthanum zirconium titanium stannate and thick film, which is applied in the direction of ceramic forming machines, manufacturing tools, fixed capacitor parts, etc., can solve the problems of dependence on refrigeration efficiency and limit the application of magnetic refrigeration technology, and achieve high energy storage density Effect

Inactive Publication Date: 2019-12-03
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Magnetic refrigeration technology is a new type of solid-state refrigeration technology based on the magnetic card effect, but magnetic refrigeration requires a large magnetic field generated by a permanent magnet array to drive the refrigeration device to work, and its cooling efficiency is strongly dependent on the strength of the magnetic field, or the size of the magnet. The application of magnetic refrigeration technology is largely limited

Method used

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  • High-tin-content lead lanthanum zirconate titanate stannate thick film ceramic, and preparation method and application thereof
  • High-tin-content lead lanthanum zirconate titanate stannate thick film ceramic, and preparation method and application thereof
  • High-tin-content lead lanthanum zirconate titanate stannate thick film ceramic, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1. Mixing powder: according to the stoichiometric ratio (PbO (99.9%) 33.4833g, La 2 o 3 (99.9%) 0.4892g, ZrO 2 (99%)7.8413g, SnO 2 (99.5%) 12.2688g, TiO 2 (99%) 0.4841g) Take the drug and place it in a nylon ball mill jar (250mL). In addition, in order to compensate for the volatilization of Pb during high-temperature sintering, an excess of 3wt% PbO was added.

[0042] 2. Ball milling: The ball milling medium is zirconia balls, the ball diameters are 3mm and 5mm, and the mass ratio is about 1:1; ordinary planetary ball mills are used for ball milling, the speed is set at 250rmp / min, and the ball milling time is 24h. Using wet ball milling, add appropriate amount of alcohol.

[0043] 3. Drying and sieving: put the ball-milled powder in an oven for drying, the drying temperature is about 60°C, and the drying time is more than 10 hours. After drying, pass the ceramic powder through 40-mesh and 80-mesh sieves respectively.

[0044] 4. Pre-firing: Pre-fire the cerami...

Embodiment 2

[0051] 1. Mixing powder: weighing strictly according to the stoichiometric ratio (PbO (99.9%) 33.4833g, La 2 o 3 (99.9%) 0.4892g, ZrO 2 (99%)7.0945g, SnO 2 (99.5%) 12.2688g, TiO 2 (99%) 0.9681g) Take the drug and place it in a nylon ball mill jar (250mL). In addition, in order to compensate for the volatilization of Pb during high-temperature sintering, an excess of 3wt% PbO was added.

[0052] 2. Ball milling: The ball milling medium is zirconia balls, the ball diameters are 3mm and 5mm, and the mass ratio is about 1:1; ordinary planetary ball mills are used for ball milling, the speed is set at 250rmp / min, and the ball milling time is 24h. Using wet ball milling, add appropriate amount of alcohol.

[0053] 3. Drying and sieving: put the ball-milled powder in an oven for drying, the drying temperature is about 60°C, and the drying time is more than 10 hours. After drying, pass the ceramic powder through 40-mesh and 80-mesh sieves respectively.

[0054] 4. Pre-firing: ...

Embodiment 3

[0062] 1. Mixing powder: weighing strictly according to the stoichiometric ratio (PbO (99.9%) 33.4833g, La 2 o 3 (99.9%) 0.4892g, ZrO 2 (99%)5.7876g, SnO 2 (99.5%) 12.2688g, TiO 2 (99%) 1.8152g) Take the drug and place it in a nylon ball mill jar (250mL). In addition, in order to compensate for the volatilization of Pb during high-temperature sintering, an excess of 3wt% PbO was added.

[0063] 2. Ball milling: The ball milling medium is zirconia balls, the ball diameters are 3mm and 5mm, and the mass ratio is about 1:1; ordinary planetary ball mills are used for ball milling, the speed is set at 250rmp / min, and the ball milling time is 24h. Using wet ball milling, adding appropriate amount of alcohol.

[0064] 3. Drying and sieving: put the ball-milled powder in an oven for drying, the drying temperature is about 60°C, and the drying time is more than 10 hours. After drying, pass the ceramic powder through 40-mesh and 80-mesh sieves respectively.

[0065]4. Pre-firing...

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Abstract

The invention belongs to the field of dielectric materials, and discloses high-tin-content lead lanthanum zirconate titanate stannate thick film ceramic, and a preparation method and application thereof. The lead lanthanum zirconate titanate stannate thick film ceramic is Pb<0.97>La<0.02>(Zr<0.46-x>Sn<0.54>Ti<x>)O<3>, wherein x=0.04 to 0.18; and the preparation method includes the steps that PbO,La2O3, ZrO2, SnO2, and TiO2 are subjected to mixed ball milling to obtain powder A; the powder A is dried and sieved to obtain ceramic powder B; the ceramic powder B is pre-fired at 900 to 980 DEG C;then secondary ball milling and drying and sieving are conducted to obtain ceramic powder C; polyoxyethylene octylphenol ether and a solvent are added to the ceramic powder C to be subjected to roll milling to obtain premixed slurry; polyvinyl butyral is added, roll milling is conducted, then the solvent, a binder, and dioctyl phthalate are added and subjected to ball milling to obtain casting slurry; a lead lanthanum zirconate titanate stannate thick film ceramic embryo body is prepared from the casting slurry on a casting machine film belt; and the ceramic embryo body is tape-ranked at 400 to 600 DEG C, and the high-tin-content lead lanthanum zirconate titanate stannate thick film ceramic is prepared through calcination at 1250 to 1300 DEG C.

Description

technical field [0001] The invention belongs to the technical field of dielectric materials, and more specifically relates to a zirconium-titanium-lanthanum-lead thick-film ceramic with high tin content and a preparation method and application thereof. Background technique [0002] With the advent of the 5G era, the development of electronic technology is getting faster and faster, and the requirements for materials used in electronic devices are also getting higher and higher. It is the common goal of our materials workers to prepare materials with excellent performance. At present, widely used capacitors are developing in the direction of high energy storage and miniaturization. Compared with fuel cells and lithium-ion batteries, ceramic capacitors have high voltage resistance and ultra-high power density, and can be used for high-power weapons, power energy storage of new energy vehicles, and pulse capacitors. However, ceramic capacitors have the disadvantage of low ener...

Claims

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Application Information

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IPC IPC(8): C04B35/457C04B35/491C04B35/622H01G4/12H01G4/30B28B1/29
CPCC04B35/491C04B35/457C04B35/622H01G4/1245H01G4/30B28B1/29C04B2235/3227C04B2235/3293C04B2235/3296C04B2235/3248C04B2235/3232
Inventor 鲁圣国王世斌黄明峰钟米昌
Owner GUANGDONG UNIV OF TECH
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