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Ceramic structure member and preparation method thereof

A technology for structural parts and ceramics, applied in the field of ceramic structural parts and their preparation, can solve the problems of high production cost, deformation, low yield and the like

Inactive Publication Date: 2020-01-07
DONGGUAN XINBO STRUCTURAL CERAMICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for some small-sized ceramic products, when the through-hole size of the product is small and the structure is complex, it is often time-consuming and labor-intensive to process, and cracks, deformation and other undesirable phenomena often occur, resulting in low yield, high production costs, and reduced product competitiveness.

Method used

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  • Ceramic structure member and preparation method thereof
  • Ceramic structure member and preparation method thereof
  • Ceramic structure member and preparation method thereof

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preparation example Construction

[0032] Please refer to figure 1 , the present invention provides a kind of preparation method of ceramic structure, it comprises the steps:

[0033] S1, take the ceramic slurry, spray and granulate to obtain granulated powder;

[0034] S2. Take the graphite filling body, and pre-embed the graphite filling body in a specific position inside the granulated powder to form a dry compact; or, press part of the granulated powder into a ceramic blank, and place the graphite filling body Placed at a specific position of the ceramic blank, and then spread the granulated powder on the ceramic blank to cover the graphite filler to form a dry compact;

[0035] S3, performing dry pressing on the dry pressing material, and then performing isostatic pressing treatment to obtain a ceramic green body;

[0036] S4. Debinding and sintering the ceramic green body to obtain a ceramic structural part with channels or through holes inside. When the temperature reaches above 300°C, the graphite fi...

Embodiment 1

[0058] This embodiment provides a method for preparing a ceramic structure, which includes the following steps:

[0059] Take, 99.5 parts of yttrium-stabilized zirconia powder, 0.05 parts of alumina, 0.5 parts of CMC, 0.5 parts of PEG, 4.5 parts of PVA, and 70 parts of deionized water, and mix the above raw materials by ball milling to obtain ceramic slurry, which is obtained by spray granulation. Granulating powder; get 100 parts of graphite powder, 70 parts of solvent, 4 parts of dispersing agent, 15 parts of binding agent; The graphite powder wherein is spherical graphite powder, and solvent wherein is made with alcohol and methyl ethyl ketone with 1:1 volume ratio, The dispersant is made up of fish oil and phosphate ester at a ratio of 1:1, and the binder is polyvinyl butyral. The method of using the above-mentioned filler to prepare a filler is: S1, mixing graphite powder, solvent, dispersant and binder together, and mixing uniformly by ball milling to form a slurry; S2, ...

Embodiment 2

[0061] This embodiment provides a method for preparing a ceramic structure, which includes the following steps:

[0062] Take 80 parts of yttrium-stabilized zirconia powder, 20 parts of alumina, 0.5 part of CMC, 0.5 part of PEG, 6 parts of PVA, and 90 parts of deionized water, and mix the above raw materials by ball milling to prepare a ceramic slurry, which is obtained by spray granulation Granulated powder: 100 parts of graphite powder, 60 parts of solvent, 5.5 parts of dispersant, and 15 parts of binder; wherein the graphite powder is spherical graphite powder, and the impurity content is less than 0.1%. The solvent is alcohol and methyl ethyl ketone in a volume ratio of 1:1, the dispersant is fish oil, and the binder is polyvinyl butyral. The method of using the above-mentioned filler to prepare a filler is: S1, mixing graphite powder, solvent, dispersant and binder together, and mixing uniformly by ball milling to form a slurry; S2, mixing the above-mentioned slurry in D...

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Abstract

The invention discloses a ceramic structure member and a preparation method thereof. The preparation method comprises: taking a ceramic slurry, and carrying out spray granulation treatment to obtain granulated powder; taking a graphite filling body, and pre-burying the graphite filling body in a specific position in the granulated powder to form a dry pressing material; or pressing part of the granulated powder into a ceramic billet, placing the graphite filling body at a specific position of the ceramic billet, and paving the granulated powder on the ceramic billet to cover the graphite filling body so as to form a dry pressing material; carrying out dry pressing on the dry pressing material, and then carrying out isostatic pressing treatment to obtain a ceramic green body; and carrying out glue discharging on the ceramic green body, and sintering to obtain the ceramic structure member with channels or through holes inside. According to the preparation method of the invention, the structure member with channels or through holes inside can be prepared, and is free of cracks and deformation, high in size precision, high in yield, free of residues and low in cost.

Description

technical field [0001] The invention relates to the technical field of preparation of ceramic structural parts, in particular to a ceramic structural part and a preparation method thereof. Background technique [0002] Due to its high strength, wear resistance, waterproof and anti-rust characteristics, ceramic materials are increasingly replacing metal and other materials, and are widely used in many fields such as mobile phone back covers and molds. In some special industrial environments, it is often necessary to use acid and alkali resistant zirconia, alumina and other ceramics. Especially in some process environments that require precise suction and pipetting, in order to precisely control this link, the dimensional accuracy requirements for this type of corrosion-resistant ceramic products are usually high, especially the size of channels and through holes. Usually, for this type of product, it is generally necessary to process the sintered billet so that the dimension...

Claims

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Application Information

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IPC IPC(8): C04B38/06C04B35/48C04B35/622C04B35/626C04B35/638
CPCC04B35/48C04B35/622C04B35/62605C04B35/638C04B38/067C04B38/068C04B2235/3217C04B2235/6025C04B2235/6562C04B2235/6567C04B2235/661
Inventor 唐杰吴国亮郭剑刘锋
Owner DONGGUAN XINBO STRUCTURAL CERAMICS CO LTD
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