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A kind of ceramic electrode material and components that can be used in biomedical research and clinical application

A technology of ferroelectric ceramics and ceramic powder, which is applied in the direction of electrical components, ceramics, fixed capacitor parts, etc., can solve the problems of dielectric loss and heat generation, achieve high dielectric constant, low dielectric loss, and simple preparation method easy effect

Active Publication Date: 2020-05-26
HEBEI PUNI MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, materials with high dielectric loss will heat up under the electric field

Method used

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  • A kind of ceramic electrode material and components that can be used in biomedical research and clinical application
  • A kind of ceramic electrode material and components that can be used in biomedical research and clinical application
  • A kind of ceramic electrode material and components that can be used in biomedical research and clinical application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0062] A kind of preparation method of ferroelectric ceramic material provided by the invention comprises the following steps:

[0063] step 1

[0064] Synthesis of (1-x)Pb(Mg 1 / 3 Nb 2 / 3 )O 3 -xPb 1-y Li 0.5y Na 0.5y Ti 1-y Nb y o 3

[0065] The two-step solid-phase method comprises:

[0066] With MgO, Nb 2 o 5 As a raw material, synthesize MgNb at a temperature of 1000°C to 1200°C for 2 hours 2 o 6 . Further, when selecting raw materials MgO and Nb 2 o 5 After that, you need to follow the MgNb 2 o 6 The stoichiometric ratio is used for batching; then, the above raw materials are mixed by wet ball milling; after mixing, the mixed materials are dried; finally, MgNb is synthesized at a temperature of 1000°C to 1200°C for 2 hours 2 o 6 . More preferably, the insulation is carried out at a temperature of 1150°C, and the obtained MgNb 2 o 6 More premium.

[0067] Prepared MgNb 2 o 6 After that, with MgNb 2 o 6 , Pb 3 o 4 , TiO 2 ,Nb 2 o 5 , Li 2 CO...

Embodiment l

[0086] The ferroelectric ceramic material consists of:

[0087] 0.89Pb(Mg 1 / 3 Nb 2 / 3 )O 3 -0.11Pb 0.96 Li 0.02 Na 0.02 Ti 0.96 Nb 0.04 o 3

[0088] First, two-step solid-phase synthesis:

[0089] 0.89Pb(Mg 1 / 3 Nb 2 / 3 )O 3 -0.11Pb 0.96 Li 0.02 Na 0.02 Ti 0.96 Nb 0.04 o 3

[0090] The first step to synthesize MgNb 2 o 6 , by MgNb 2 o 6 MgO, Nb required for chemical formula composition calculation 2 o 5 raw material.

[0091] Wet ball milling method is used for mixing, wherein the mass ratio of raw materials, balls and deionized water is as follows:

[0092] Raw material: grinding ball: deionized water = 1: 1.5: 0.8;

[0093] Mix for 6-8 hours to make the components evenly mixed.

[0094] Dry and sieve after drying. Preferably, a 30-mesh sieve is used to sieve the above-mentioned mixed raw materials.

[0095] The mixed raw materials are incubated at 1000-1200°C for 2 hours to synthesize MgNb 2 o 6 ;

[0096] The second step synthesizes 0.89Pb(Mg ...

Embodiment 2

[0118] The ferroelectric ceramic material consists of:

[0119] 0.92Pb(Mg 1 / 3 Nb 2 / 3 )O 3 -0.08Pb 0.96 Li 0.02 Na 0.02 Ti 0.96 Nb 0.04 o 3

[0120] The preparation method of Example 1 was repeated according to the composition formula of the above ferroelectric ceramics, and the obtained green body was sintered at 1235° C. and kept for 2 hours.

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Abstract

The invention relates to a ferroelectric ceramic material, which has high dielectric constant and low loss, and a dielectric component prepared therefrom. The chemical component of the ferroelectric ceramic material satisfies the general formula (1-x)Pb(Mg<1 / 3>Nb<2 / 3>)O3-xPb<1-y>Li<0.5y>Na<0.5y>Ti<1-y>Nb<y>O3, wherein 0.072 <= x <= 0.120 and 0 <= y <= 0.06, x and y are molar numbers. The ferroelectric ceramic material is prepared by selecting suitable compound doping modifying ions and through a traditional electronic ceramic preparation process. Correspondingly, the invention provides the ferroelectric ceramic material produced through the preparation method. The ceramic material has high dielectric constant and low loss, is suitable for producing a capacitor electrode for conducting alternating current. The material has excellent prospect in biomedical researches and clinical applications that are carried out with application of an alternating current field.

Description

technical field [0001] The invention belongs to the technical field of functional ceramic materials, and in particular relates to a dielectric ceramic material for capacitors and a preparation method thereof. Background technique [0002] Biomedical studies have shown that due to the charged ions in cells, under the action of an alternating electric field, if an appropriate electric field frequency is selected, the electric field can selectively induce some cells to rotate [The Journal of Membrane Biology, vol.67, pp13-26, 1982]. This is because, under the action of an external electric field, the charged ions will undergo local short-range migration, and an electric field-induced electric dipole will be generated in the cell. The electric dipole can rotate under the action of the external field, and the cell will rotate together. [0003] The direction of the electric moment of a single electric dipole is from the negative charge to the positive charge. When the direction ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B3/12C04B35/497C04B35/472C04B35/622H01G4/12
CPCC04B35/472C04B35/497C04B35/622C04B2235/3201C04B2235/3203C04B2235/3251C04B2235/3255H01G4/1209H01G4/1227H01G4/1245
Inventor 刘胜军段红杰
Owner HEBEI PUNI MEDICAL TECH CO LTD