CN112174696A - Ceramic structural member, glaze for surface decoration of ceramic structural member, preparation method of ceramic structural member and electronic equipment - Google Patents
Ceramic structural member, glaze for surface decoration of ceramic structural member, preparation method of ceramic structural member and electronic equipment Download PDFInfo
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- CN112174696A CN112174696A CN201910587690.8A CN201910587690A CN112174696A CN 112174696 A CN112174696 A CN 112174696A CN 201910587690 A CN201910587690 A CN 201910587690A CN 112174696 A CN112174696 A CN 112174696A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/14—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions
- C03C8/20—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions containing titanium compounds; containing zirconium compounds
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5022—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with vitreous materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/86—Glazes; Cold glazes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1626—Constructional details or arrangements for portable computers with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/0279—Improving the user comfort or ergonomics
- H04M1/0283—Improving the user comfort or ergonomics for providing a decorative aspect, e.g. customization of casings, exchangeable faceplate
Abstract
The application relates to a ceramic structural member, glaze for surface decoration of the ceramic structural member, a preparation method and electronic equipment, wherein the glaze for surface decoration of the ceramic structural member comprises the following components in percentage by weight: 35-40 wt% of potassium feldspar, 14-20 wt% of zirconia, 0.5-1.5 wt% of alumina, 5-6 wt% of Longyan soil and the balance of fluxing agent. According to the ceramic structural member, the glaze for surface decoration of the ceramic structural member, the preparation method of the glaze and the electronic equipment, the glaze is combined with the ceramic blank, so that the surface texture is enriched, meanwhile, the glaze is not easy to fall off from the ceramic blank, and the better decoration effect of the surface of the ceramic structural member is maintained.
Description
Technical Field
The application relates to the technical field of electronic equipment, in particular to a ceramic structural member, glaze for surface decoration of the ceramic structural member, a preparation method of the glaze and electronic equipment.
Background
With the pursuit of consumers for the overall appearance texture of electronic equipment such as mobile phones and tablet computers, the structure members such as shells and frames or the obvious structure members such as keys occupying the larger part of the outer surface of the mobile terminal play a leading effect on the overall appearance texture of the electronic equipment.
At present, although attempts are made to enrich the appearance texture of electronic equipment by using a ceramic shell, the problem of single color tone always exists, and the problem of glaze layer falling exists when glaze is used for enriching the surface decoration of ceramic, so that the surface decoration effect of ceramic is not ideal.
Disclosure of Invention
The embodiment of the application aims at solving the problem that a glaze layer on the surface of a ceramic structural member is easy to fall off, and provides a glaze for surface decoration of the ceramic structural member, the ceramic structural member for surface decoration by using the glaze, a preparation method of the ceramic structural member and electronic equipment comprising the ceramic structural member.
In one aspect, the present application provides a glaze for surface decoration of a ceramic structural member, wherein the glaze comprises the following components by weight: 35-40 wt% of potassium feldspar, 14-20 wt% of zirconia, 0.5-1.5 wt% of alumina, 5-6 wt% of Longyan soil and the balance of fluxing agent.
In one embodiment, the fluxing agent comprises dolomite and wollastonite, wherein the dolomite accounts for 8-10 wt% of the glaze, and the wollastonite accounts for 19-27 wt% of the glaze.
In one embodiment, the fluxing agent comprises dolomite, calcite and quartz, wherein the dolomite accounts for 8-10 wt% of the glaze, the calcite accounts for 14-19 wt% of the glaze, and the quartz accounts for 5-8 wt% of the glaze.
In one embodiment, the fluxing agent comprises dolomite and quartz, wherein the dolomite accounts for 22-29 wt% of the glaze, and the quartz accounts for 5-8 wt% of the glaze.
In another aspect, the present application provides a method for preparing a ceramic structural member, comprising the steps of:
obtaining a ceramic body;
spraying the glaze material on the surface of the ceramic body;
and drying and sintering the ceramic blank sprayed with the glaze to form the ceramic structural member.
In one embodiment, the step of obtaining a ceramic body comprises:
mixing 70-99 parts by weight of ceramic raw material powder with 1-30 parts by weight of binder to obtain ceramic slurry;
the ceramic slurry is formed by injection molding, tape casting or dry pressing to obtain a ceramic green body;
carrying out glue removal and degreasing on the ceramic green body to remove organic components;
placing the ceramic green body subjected to degumming and degreasing in a reducing or oxidizing or inert atmosphere for sintering, wherein the sintering temperature is controlled to be over 1200 ℃, and the sintering time is controlled to be 0.5-10 h, so as to obtain a ceramic sintered body;
and carrying out CNC machining, grinding and polishing on the ceramic sintered blank to obtain a ceramic blank body.
In one embodiment, the thickness of the glaze sprayed on the surface of the ceramic blank is 0.1 mm-0.4 mm.
In one embodiment, the ceramic blank sprayed with the glaze is dried at a temperature of 65-75 ℃.
In one embodiment, when the ceramic blank sprayed with the glaze is sintered and formed, a shuttle kiln is adopted for sintering, the sintering temperature is 1200-1500 ℃, and the sintering time is controlled to be 8.5-9.5 h.
In another aspect, the present application provides a ceramic structural member prepared by the above method.
In one embodiment, the ceramic structural component includes one of a middle frame, a rear cover and a key, or the ceramic structural component is an integrally formed structure of the middle frame and the rear cover.
In yet another aspect, the present application provides an electronic device comprising the ceramic structural member described above.
The application relates to a ceramic structural part, a glaze for surface decoration of the ceramic structural part, a preparation method and electronic equipment, wherein the glaze comprises the following components in percentage by weight: 35-40 wt% of potassium feldspar, 14-20 wt% of zirconia, 0.5-1.5 wt% of alumina, 5-6 wt% of Longyan soil and the balance of fluxing agent. By combining the glaze with the ceramic blank, the surface texture is enriched, and meanwhile, the glaze is not easy to fall off from the ceramic blank, so that the better decorative effect of the surface of the ceramic structural member is maintained.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart illustrating steps of a method for manufacturing a ceramic structural component according to an exemplary embodiment;
FIG. 2 is a schematic flow chart illustrating steps of obtaining a ceramic body in a method for manufacturing a ceramic structural member according to an embodiment;
fig. 3 is a schematic layer structure diagram of a ceramic structural member according to an embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
As used herein, "electronic device" means a device capable of receiving and/or transmitting communication signals including, but not limited to, a device connected via any one or more of the following connections:
(1) via wireline connections, such as via Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connections;
(2) via a Wireless interface means such as a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter.
Electronic devices arranged to communicate over a wireless interface may be referred to as "mobile terminals". Examples of mobile terminals include, but are not limited to, the following electronic devices:
(1) satellite or cellular telephones;
(2) personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities;
(3) radiotelephones, pagers, internet/intranet access, Web browsers, notebooks, calendars, Personal Digital Assistants (PDAs) equipped with Global Positioning System (GPS) receivers;
(4) conventional laptop and/or palmtop receivers;
(5) conventional laptop and/or palmtop radiotelephone transceivers, and the like.
Referring to fig. 1, in one aspect of the present application, there is provided a method for manufacturing a ceramic structural member, including the steps of:
and S102, obtaining a ceramic body.
And step S104, spraying glaze on the surface of the ceramic blank.
And S106, drying and sintering the ceramic blank sprayed with the glaze to form the ceramic structural member.
In step S104, the glaze sprayed on the surface of the ceramic green body has a decorative property, that is, the glaze for decorating the surface of the ceramic structural member includes the following components by weight percent: 35-40 wt% of potassium feldspar, 14-20 wt% of zirconia, 0.5-1.5 wt% of alumina, 5-6 wt% of Longyan soil and the balance of fluxing agent.
Wherein, potassium feldspar (K)2O·Al2O3·6SiO2) Is the main component of the glaze, and the melting temperature range is 1100-1460 ℃ according to the adjustment of the additional components. Accordingly, the melting temperature of the glaze material is reduced along with the increase of the content of the potassium feldspar, so that the expansion coefficient of the glaze material can be improved by adopting the 35-40 wt% of the potassium feldspar, and the crack density of the glaze layer can be improved when the glaze material is fired to form the glaze layer.
Zirconium oxide (ZrO)2) As the main component of the zirconia ceramic, the melting temperature is high, and at about 2900 ℃, the zirconia can improve the high-temperature viscosity of the glaze, expand the temperature range of viscosity change and improve the anti-cracking performance of the glaze. In addition, the zirconia has great chemical inertia, so that the chemical stability and acid and alkali resistance of the glaze can be improved, and the function of an opacifier can be realized. Usually, zirconia is a main raw material of "under-glaze white", and is also a good color assistant for yellow-green pigments.
Specifically, in the embodiment, when the glaze is used for decorating the surface of the ceramic structural member, the zirconia can improve the bonding force between the glaze layer formed by firing the glaze and the ceramic blank, so that the glaze layer is prevented from falling off from the ceramic blank, and the overall appearance texture of the ceramic structural member can be improved. Through ball drop test, the ceramic structural member using the glaze can obtain better test performance. The ceramic structural member using the above glaze was tested by taking a ball drop test of 80cm height as an example, and even in the case where the ceramic body of the ceramic structural member is broken, the corresponding glaze layer remained bonded to the broken ceramic body without the glaze layer falling off.
Alumina (Al)2O3) The ceramic strength can be improved in zirconia ceramic, the content of the ceramic in the glaze is low, and the ceramic can be combined with silicon element in the glaze to form a network intermediate of the glaze in the sintering process. The alumina can improve the chemical stability, hardness and elasticity of the glaze, and increase the melting temperature so as to improve the stability of the glaze under the high-temperature condition.
The Longyan soil is Kaolin (Al)2O3·2SiO2·2H2O), the glaze has good suspension property and stability, so that the glaze is well spread on the surface of the ceramic blank, the agglomeration of glaze particles is reduced, the surface smoothness of the glaze is improved, and the appearance texture of the ceramic structural member is improved.
The fluxing agent mainly plays a role in fluxing the glaze, so that the glaze can be stably combined to the ceramic body during sintering and forming. In the glaze components, different fluxing agents are adopted, and the corresponding effects are slightly different. The following will be described in an exemplary manner.
In one embodiment, the fluxing agent comprises dolomite and wollastonite, wherein the dolomite accounts for 8-10 wt% of the glaze, and the wollastonite accounts for 19-27 wt% of the glaze.
Dolomite (CaMg (CO)3)2) As an important component of the flux, MgO and CaO with high activity are generated by decomposition at 730 ℃ or higher, and the high polymer is differentiated and depolymerized. Opacification can not occur in the glaze firing process, but a small amount of acicular mullite can be separated out through slow cooling, the thermal stability of the glaze is improved, the glaze is prevented from absorbing smoke and yellowing to a certain extent, MgO can promote the formation of the intermediate layer of the blank glaze, the expansion coefficient of the glaze can be reduced, the density of the glaze is improved, and the blank glaze is tightly combined to avoid unglazing.
Wollastonite (CaSiO)3) The silicate of alkali metal calcium can also act as a fluxing agent in glaze, and gases such as carbon dioxide and the like are not generated in the sintering process, so that the probability of glaze bubbles and pinholes on the glaze surface can be reduced.
In another embodiment, the flux comprises dolomite, calcite, and quartz. Wherein, the weight percentage of dolomite in the glaze is 8-10 wt%, the weight percentage of calcite in the glaze is 14-19 wt%, and the weight percentage of quartz in the glaze is 5-8 wt%.
Calcite (CaCO)3) Calcite starts to decompose at 850 ℃ to produce CO2The CaO and CaO have a violent effect at about 950 ℃, CaO generated at high temperature can play a fluxing effect with strong activity in the glaze, the melting temperature of the glaze and the viscosity of the glaze can be reduced at 1330 ℃, and the fluidity and the expansion coefficient of the glaze are improved. Quartz (SiO)2) As a main component of glass, glass can be produced after sintering in a glaze.
In other embodiments, the fluxing agent comprises dolomite and quartz, wherein the dolomite accounts for 22-29 wt% of the glaze, and the quartz accounts for 5-8 wt% of the glaze.
In embodiments where the glaze composition comprises quartz, potassium feldspar may also promote the breaking of Si — O bonds, accelerate the melting of high melting point crystals such as silica, and achieve a certain fluxing effect to promote the formation of low melting eutectic.
The glaze used in the method for preparing the ceramic structural member can also be used for surface decoration of the ceramic structural member in other processes. In this regard, another aspect of the present application provides a glaze comprising the following components in weight percent: 35-40 wt% of potassium feldspar, 14-20 wt% of zirconia, 0.5-1.5 wt% of alumina, 5-6 wt% of Longyan soil and the balance of fluxing agent. The components of the flux can be referred to the above-mentioned examples, and are not described herein again.
Referring to fig. 2, in some embodiments, the step S102 of obtaining the ceramic body includes:
step S1021, mixing 70-99 parts by weight of ceramic raw material powder and 1-30 parts by weight of binder to obtain ceramic slurry. The binder may be one or more selected from paraffin, polyethylene glycol, stearic acid, dioctyl phthalate, polyethylene, polypropylene, polymethyl methacrylate, and polyformaldehyde.
Step S1022, the ceramic slurry is formed by injection molding, tape casting, or dry pressing to obtain a ceramic green compact;
step S1023, performing glue removal and degreasing on the ceramic green body to remove organic components; for example, in some embodiments, the degumming temperature is controlled below 400 ℃, the time is controlled within 0.5 h-4 h, and after degumming, the sample has no problems of distortion, cracking, heterochromous and the like.
Step S1024, placing the ceramic green body subjected to glue removal and degreasing in a reducing or oxidizing or inert atmosphere for sintering, wherein the sintering temperature is controlled to be over 1200 ℃, and the sintering time is controlled to be 0.5-10 h, so as to obtain a ceramic sintered body;
and step S1025, performing CNC machining, grinding and polishing on the ceramic sintered blank to obtain a ceramic blank body.
The thickness of the glaze sprayed on the surface of the ceramic blank is 0.1-0.4 mm, so that the glaze is controlled within a proper thickness, the decorative effect on the surface of the ceramic blank is added, and the waste caused by excessive use of the glaze is avoided.
The ceramic blank body sprayed with the glaze is dried at the temperature of 65-75 ℃. The drying time can be controlled between 0.8h and 1.2h, so that the ceramic green body is fully dehydrated. For example, in some embodiments, the ceramic body sprayed with the glaze is held at a temperature of 65 ℃ to 75 ℃ for 1 hour.
In step S106, when the ceramic blank sprayed with the glaze is sintered and formed, a shuttle kiln is used for sintering, the sintering temperature is 1200 ℃ to 1500 ℃, and the sintering time is controlled to be 8.5h to 9.5h, for example, in some embodiments, the sintering temperature is 1330 ℃, and the sintering time is controlled to be 9 h.
In the sintering process, the sintering may be performed using a reducing flame so as to maintain a reducing gas atmosphere.
In some embodiments, the ingredients of the glaze are mixed uniformly after being formulated according to the glaze ingredients.
For example, glaze is ball-milled in a planetary ball mill, and ball mills of different diameters are used in the ball milling process, and are classified into large-sized ball mills, medium-sized ball mills, and small-sized ball mills by the diameter size, wherein the large-sized ball mills, the medium-sized ball mills, and the small-sized ball mills are 2 parts by mass, 4 parts by mass, and 4 parts by mass based on the total mass of the ball mills. The diameter of the large ball mill is 8-12 mm, the diameter of the medium ball mill is 5-7 mm, and the diameter of the small ball mill is 2-4 mm. The grinding rotation speed is 400r/min, and the ball milling time is 1-1.5 h. The ratio of glaze to ball mill to water is 1:1.8: 0.8. Sieving the ceramic blank by a 250-mesh sieve to enable the glaze sprayed on the ceramic blank to form slurry so as to meet the spraying requirement.
In some embodiments, before step S104, that is, before the step of spraying the glaze on the surface of the ceramic blank, the surface of the ceramic blank is cleaned to remove oil stains, and then the ceramic blank is placed in a preheating furnace to be preheated, wherein the preheating temperature is controlled to be 150 ℃ to 200 ℃, and the preheating time is controlled to be 13min to 17min, so as to better adapt to the adhesion of the glaze, and facilitate the subsequent sintering and molding of the ceramic blank sprayed with the glaze.
Referring to fig. 3, in another aspect of the present application, a ceramic structural member is provided, which includes a ceramic body 11 and a glaze layer 12 formed on a surface of the ceramic body 11. The ceramic structural member is prepared by the ceramic structural member preparation method, namely, the glaze with the components is coated on the surface of a ceramic blank, and finally the glaze layer 12 is formed on the surface of the ceramic blank 11 by the glaze, so that the ceramic structural member decorated by the glaze layer 12 is obtained. Since the ceramic structural member is prepared by the ceramic structural member preparation method, the ceramic structural member has all the characteristics and advantages of the ceramic structural member prepared by the ceramic structural member preparation method, and detailed description is omitted. In summary, the ceramic glaze on the surface of the ceramic structural member can provide rich visual effects and has better decorative properties, and the glaze layer 12 on the surface decoration is not easy to fall off from the ceramic blank 11, so as to improve the overall texture of the ceramic structural member.
In some embodiments, the ceramic structural member comprises one of a bezel, a back cover, and a key.
The ceramic structural part can also be a ceramic middle frame and a ceramic rear cover integrally formed structure. In other embodiments, the ceramic structural member may also be other components of the electronic device, and the structural form of the ceramic structural member is not described herein again.
In yet another aspect of the present application, an electronic device is provided, which includes the ceramic structural member described above.
For example, in some embodiments, the electronic device includes a housing and a display screen, the display screen is connected to the housing and encloses a receiving space, and a main board, a memory, a power supply, and other devices of the electronic device are disposed in the receiving space. Wherein, the casing adopts foretell ceramic structure spare, because in the ceramic structure spare, forms stable combination between glaze layer and the ceramic body to be difficult to appear the bad phenomenon that the glaze layer drops, thereby make electronic equipment's surface can keep ceramic glaze effect better, with the whole feel that promotes electronic equipment, make electronic equipment's expressive force stronger.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (12)
1. The glaze for decorating the surface of the ceramic structural member is characterized by comprising the following components in percentage by weight: 35-40 wt% of potassium feldspar, 14-20 wt% of zirconia, 0.5-1.5 wt% of alumina, 5-6 wt% of Longyan soil and the balance of fluxing agent.
2. The glaze according to claim 1, wherein the fluxing agent comprises dolomite and wollastonite, wherein the dolomite accounts for 8-10 wt% of the glaze, and the wollastonite accounts for 19-27 wt% of the glaze.
3. The glaze according to claim 1, wherein the fluxing agent comprises dolomite, calcite and quartz, wherein the dolomite accounts for 8-10 wt% of the glaze, the calcite accounts for 14-19 wt% of the glaze, and the quartz accounts for 5-8 wt% of the glaze.
4. The glaze according to claim 1, wherein the fluxing agent comprises dolomite and quartz, wherein the dolomite accounts for 22-29 wt% of the glaze, and the quartz accounts for 5-8 wt% of the glaze.
5. A method for preparing a ceramic structural member is characterized by comprising the following steps:
obtaining a ceramic body;
spraying glaze on the surface of the ceramic body, wherein the glaze is the glaze of any one of claims 1 to 4;
and drying and sintering the ceramic blank sprayed with the glaze to form the ceramic structural member.
6. The method of making a ceramic structural member according to claim 5, wherein the step of obtaining a ceramic body comprises:
mixing 70-99 parts by weight of ceramic raw material powder with 1-30 parts by weight of binder to obtain ceramic slurry;
the ceramic slurry is formed by injection molding, tape casting or dry pressing to obtain a ceramic green body;
carrying out glue removal and degreasing on the ceramic green body to remove organic components;
placing the ceramic green body subjected to degumming and degreasing in a reducing or oxidizing or inert atmosphere for sintering, wherein the sintering temperature is controlled to be over 1200 ℃, and the sintering time is controlled to be 0.5-10 h, so as to obtain a ceramic sintered body;
and carrying out CNC machining, grinding and polishing on the ceramic sintered blank to obtain a ceramic blank body.
7. The method for preparing a ceramic structural member according to claim 5, wherein the thickness of the glaze sprayed on the surface of the ceramic green body is 0.1mm to 0.4 mm.
8. The method for preparing a ceramic structural member according to claim 5, wherein the ceramic green body sprayed with the glaze is dried at a temperature of 65 ℃ to 75 ℃.
9. The method for preparing the ceramic structural member according to claim 5, wherein the ceramic green body sprayed with the glaze is sintered and formed by a shuttle kiln, the sintering temperature is 1200-1500 ℃, and the sintering time is controlled to be 8.5-9.5 h.
10. A ceramic structural member produced by the method for producing a ceramic structural member according to any one of claims 5 to 9.
11. The ceramic structural member of claim 10, wherein the ceramic structural member comprises one of a middle frame, a rear cover and a key, or the ceramic structural member is an integrally formed structure of the middle frame and the rear cover.
12. An electronic device comprising the ceramic structural member according to claim 10 or 11.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112429966A (en) * | 2019-08-26 | 2021-03-02 | Oppo广东移动通信有限公司 | Structural member and method of making same |
| CN113548798A (en) * | 2021-06-30 | 2021-10-26 | 蒙娜丽莎集团股份有限公司 | Ultra-flat-bottom glaze and application thereof in ceramic tiles |
| CN114434589A (en) * | 2022-01-28 | 2022-05-06 | Oppo广东移动通信有限公司 | Ceramic shell preparation method, ceramic shell and electronic equipment |
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| CN113548798A (en) * | 2021-06-30 | 2021-10-26 | 蒙娜丽莎集团股份有限公司 | Ultra-flat-bottom glaze and application thereof in ceramic tiles |
| CN113548798B (en) * | 2021-06-30 | 2023-08-11 | 蒙娜丽莎集团股份有限公司 | Ultra-flat-bottom glaze and application thereof in ceramic tiles |
| CN114434589A (en) * | 2022-01-28 | 2022-05-06 | Oppo广东移动通信有限公司 | Ceramic shell preparation method, ceramic shell and electronic equipment |
| CN114434589B (en) * | 2022-01-28 | 2023-11-07 | Oppo广东移动通信有限公司 | Ceramic shell manufacturing method, ceramic shell and electronic equipment |
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