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Ceramic metallization slurry and preparation method and application thereof

A technology of ceramic metallization and slurry, which is applied in applications, other household utensils, clay products, etc., can solve the problems of poor adhesion, cracking and warping of the metallized layer, and achieve low resistance, strong adhesion and stable performance Effect

Pending Publication Date: 2020-05-15
秦皇岛本征晶体科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the methods of combining ceramic devices and metal parts mainly include: inorganic adhesive bonding, glass bonding, and brazing and sealing. Among them, metallizing ceramics, and then brazing and sealing ceramics and metal parts is The most reliable method, and the components obtained by this method have the characteristics of high temperature oxidation resistance, high bonding strength, good air tightness, and long service life. However, ceramic devices in the prior art are brazed with metal parts after metallization During the sealing process, due to the poor adhesion between the formed metallized layer and the ceramic device, the metallized layer is prone to problems such as cracking and warping, which in turn affects the brazing seal between the ceramic device and the metal part

Method used

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Examples

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preparation example Construction

[0026]A method for preparing a ceramic metallization slurry as described above, comprising the following steps: weighing metal ultrafine powder, non-metal oxide ultrafine powder, organic solvent, organic additives and ultrafine palladium powder according to weight percentage, Then mix the above-mentioned raw materials uniformly and grind for 0.5-12 hours to obtain.

[0027] An application of a ceramic metallization slurry, comprising the following steps: coating the ceramic metallization slurry on the surface of a ceramic device, heating to 60-200°C at a heating rate of 1-5°C / min, and holding the temperature for 120-200min; Heat at a heating rate of 1-5°C / min to 600-900°C, hold for 120-200 minutes, then heat at a heating rate of 1-5°C / min to 1300-1500°C, hold for 60-180 minutes, and then heat at 1-10 The cooling rate of °C / min is reduced to 700-1000 °C, and then naturally cooled to room temperature. The ceramic metallization slurry is prepared by the above two methods for prep...

Embodiment 1

[0029] The ceramic metallization slurry of this embodiment is mainly made of the raw materials of the following components: 10% Pt superfine powder, 1.5% Zr superfine powder, 11% ZrO 2 Superfine powder, 3% Y 2 o 3 , 7.5% methyl acetate, 16% terpineol, 7.5% linseed oil, 8.5% diethyl adipate, and the balance is ultrafine palladium powder with an average particle size of 1.8 μm.

[0030] The preparation method of the ceramic metallization slurry of the present embodiment is: the above-mentioned Pt superfine powder, Zr superfine powder, ZrO 2 Superfine powder, Y 2 o 3 , methyl acetate, terpineol, linseed oil, diethyl adipate and the rest ultrafine palladium powder were mixed uniformly, and then ground for 1.5 hours to prepare a ceramic metallization slurry.

[0031] The application of the ceramic metallization slurry in this embodiment is as follows: apply the prepared ceramic metallization slurry on the surface of 5YSZ ceramics, heat it to 90°C at a heating rate of 2°C / min, k...

Embodiment 2

[0034] The ceramic metallization slurry of this embodiment is mainly made of the raw materials of the following components: 11.5% Pt superfine powder, 1.5% Ti superfine powder, 11% Al 2 o 3 Superfine powder, 3% Y 2 o 3 Ultrafine powder, 7.5% ethyl acetate, 7.5% cyclohexanone, 10.5% linseed oil, 3.5% olive oil, and 7.5% ethyl cellulose, and the balance is ultrafine palladium powder with an average particle size of 1.8 μm.

[0035] The preparation method of the ceramic metallization slurry of the present embodiment is: the above-mentioned Pt superfine powder, Ti superfine powder, Al 2 o 3 Superfine powder, Y 2 o 3 Ultrafine powder, ethyl acetate, cyclohexanone, linseed oil, olive oil, ethyl cellulose and the rest of ultrafine palladium powder were mixed evenly, and then ground for 1.5 hours to prepare ceramic metallization slurry.

[0036] The application of the ceramic metallization slurry in this embodiment is as follows: the prepared ceramic metallization slurry is coat...

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Abstract

The invention relates to the technical field of brazing pretreatment materials, and in particular, relates to ceramic metallization slurry and a preparation method and application thereof. The ceramicmetallization slurry is mainly prepared from the following raw materials in parts by mass: 3-30% of metal ultrafine powder, 5-25% of metal oxide ultrafine powder, 15-30% of an organic solvent, 15-45%of an organic additive, and the balance being ultrafine palladium powder. The metal ultrafine powder mainly comprises any one or more of Ti ultrafine powder, Pt ultrafine powder, Zr ultrafine powderor Ag ultrafine powder; the metal oxide ultrafine powder mainly comprises any one or more of Y2O3 ultrafine powder, CaO ultrafine powder, Al2O3 ultrafine powder, MgO ultrafine powder, MnO ultrafine powder or ZrO2 ultrafine powder. According to the ceramic metallization slurry, the adhesive force between a metallization layer formed by coating the surface of a ceramic device with the ceramic metallization slurry and sintering and the ceramic device is large, and a formed metallization layer is not prone to cracking and warping.

Description

technical field [0001] The invention relates to the technical field of pretreatment materials for brazing, in particular to a ceramic metallization slurry and its preparation method and application. Background technique [0002] Structural devices and functional devices made of ceramic materials are widely used in aviation, aerospace, nuclear industry, clean energy, energy conservation and environmental protection and other fields. For example, 3YSZ (3mol% yttria stabilized zirconia ceramics) belongs to toughened high temperature resistant structural ceramics, which are used to prepare wear-resistant devices, high temperature resistant ceramic parts, etc.; 5YSZ (5mol% yttria stabilized zirconia ceramics) or 8YSZ ( 8mol% yttria-stabilized zirconia ceramics) have high-temperature thermionic conductivity, and are the core devices for preparing hydrogen fuel cell stacks, the core devices for oxygen detectors, and the sensitive components for automotive oxygen sensors. Usually, ...

Claims

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Application Information

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IPC IPC(8): C04B41/88
CPCC04B41/009C04B41/5122C04B41/88C04B33/00C04B35/00C04B41/4535C04B41/5111C04B41/5133C04B41/5042C04B41/5045C04B41/463C04B41/472C04B41/0072
Inventor 王亚辉徐悟生李庆利
Owner 秦皇岛本征晶体科技有限公司
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