CN108975763A - A kind of preparation method of the crystal whisker toughened zirconia ceramics mobile phone backboard of molybdenum silicide - Google Patents
A kind of preparation method of the crystal whisker toughened zirconia ceramics mobile phone backboard of molybdenum silicide Download PDFInfo
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- CN108975763A CN108975763A CN201810919936.2A CN201810919936A CN108975763A CN 108975763 A CN108975763 A CN 108975763A CN 201810919936 A CN201810919936 A CN 201810919936A CN 108975763 A CN108975763 A CN 108975763A
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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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/12—Condensation polymers of aldehydes or ketones
- C04B26/122—Phenol-formaldehyde condensation polymers
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/023—Fired or melted materials
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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
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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
- H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
- H04M1/185—Improving the rigidity of the casing or resistance to shocks
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- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Signal Processing (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
The invention discloses a kind of preparation methods of the crystal whisker toughened zirconia ceramics mobile phone backboard of molybdenum silicide, and 12 parts by weight ~ 18 parts by weight molybdenum silicide whiskers dispersion is added in isopropanol, suspending liquid A is stirred to get；100 parts by weight zirconia materials are gradually added in suspending liquid A, suspension B is stirred to get；Suspension B is transferred in vacuum oven and is dried in vacuo, powdery molybdenum silicide whisker/zirconium oxide presoma is obtained；Powdery molybdenum silicide whisker/zirconium oxide presoma is transferred to atmosphere Oven Sintered Technology into the crystal whisker toughened zirconia ceramics powder of molybdenum silicide；Liquid phenolic resin is added into the crystal whisker toughened zirconia ceramics powder of molybdenum silicide, is uniformly mixed, is molded into cell phone back board mold, it is hot-forming, obtain the crystal whisker toughened zirconia ceramics mobile phone backboard of the molybdenum silicide.The preparation method of the crystal whisker toughened zirconia ceramics mobile phone backboard of molybdenum silicide of the present invention is simple, easily operated, is conducive to scale volume production, improves the property and the market competitiveness of product.
Description
Technical field
The present invention relates to the technical fields of ceramics, and in particular to a kind of crystal whisker toughened zirconia ceramics mobile phone backboard of molybdenum silicide
Preparation method.
Background technique
With the continuous development and technology innovation of mobile phone manufacturing, the metallization removal of cell phone appearance has been general trend of events institute
Become, the nonmetallic materials such as glass appearance accessory, ceramic appearance accessory gradually substitute metal material cell phone appearance accessory, have very strong
The market competitiveness.
Ceramic mobile phone appearance accessory appearance property is excellent, favors by cell phone manufacturer, is limited by cost and production capacity at present.Pottery
Porcelain cell phone appearance accessory its hardness for other materials is higher, will not scratch, while texture is outstanding, gentle as beautiful, and
The problem of there is no metal material signal shieldings.Ceramic mobile phone appearance accessory mostly uses greatly the structural ceramics in special cermacis.By
In the characteristic with transformation toughening, structural ceramics mostly uses zirconia ceramics.Zirconia ceramics has fusing point height, hardness big, resistance to
The advantageous properties such as scratch.Pure zirconia is white, is in yellow or grey when impure, typically contains HfO2, it is not readily separated.But
Zirconia ceramics there is also toughness poor, easily rupturable problem.
Chinese patent CN201711366286.5 discloses a kind of utilization casting molding processes production zirconia ceramics mobile phone
The zirconia ceramics powder raw material ball for making zirconia ceramics cell phone rear cover is ground, then mixed together with additive by the method for rear cover
Secondary wet process grinding is carried out after closing stirring, obtains premix slurry, then premix slurry and organic plasticizer solution mixing system at tool
There is certain viscosity mixed slurry, and third time grinding is carried out to mixed slurry, casting slurry is obtained, to casting slurry froth in vacuum
Processing；Casting slurry is allowed to be flowed into zirconia ceramics cell phone rear cover mold from container again, and with scraper with zirconia ceramics hand
Machine rear cover thickness is scraped coated on zirconia ceramics cell phone rear cover mold, is peeled from above as rear cover life after drying, solidification
Then base needs to be punched green compact, laminated working process, hair is made according to the size and shape of zirconia ceramics cell phone rear cover
Base；Zirconia ceramics cell phone rear cover blank is obtained after sintering；Using working process, obtain zirconia ceramics cell phone rear cover at
Product.But zirconia ceramics cell phone rear cover made from the patent is not modified zirconium oxide, however it remains cell phone rear cover toughness
The problem of difference, easy fracture.
Therefore, it in view of the above-mentioned problems, needing to provide a kind of preparation method of toughening modifying zirconia ceramics mobile phone backboard, mentions
The product property and the market competitiveness of high ceramic mobile phone appearance accessory.
Summary of the invention
The present invention is in view of the above-mentioned problems, provide a kind of preparation side of crystal whisker toughened zirconia ceramics mobile phone backboard of molybdenum silicide
Method.
Technical solution used by the present invention solves the above problems is: a kind of crystal whisker toughened zirconia ceramics mobile phone of molybdenum silicide
The preparation method of backboard, comprising the following steps:
12 parts by weight ~ 18 parts by weight molybdenum silicide whiskers dispersion is added in isopropanol, in 300r/min ~ 400r/ by step S1
4h ~ 6h is stirred under the speed conditions of min, obtains suspending liquid A；
100 parts by weight zirconia materials are gradually added in the suspending liquid A that step S1 is obtained by step S2,250r/min ~
4h ~ 8h is stirred under the revolving speed of 300r/min, obtains suspension B；
The suspension B that step S2 is obtained is transferred to vacuum drying 8h ~ 12h in vacuum oven, obtains powdery silication by step S3
Molybdenum whisker/zirconium oxide presoma；
Powdery molybdenum silicide whisker/zirconium oxide presoma that step S3 is obtained is transferred to tube type vacuum atmosphere Oven Sintered Technology by step S4
At the crystal whisker toughened zirconia ceramics powder of molybdenum silicide；
Liquid phenolic resin is added in the crystal whisker toughened zirconia ceramics powder of the molybdenum silicide obtained to step S4 in step S5, mixes
Uniformly, it is molded into cell phone back board mold, it is hot-forming, obtain the crystal whisker toughened zirconia ceramics mobile phone backboard of the molybdenum silicide.
Further, in step S1, the additive amount of isopropanol and the ratio of molybdenum silicide whisker quality are as follows: 1L:12g ~ 18g.
Further, in step S4, tube type vacuum atmosphere Oven Sintered Technology process include slow temperature-rise period, heat preservation crystallized
Journey, fast cooling process, secondary cooling process.
Further, slow temperature-rise period specifically: be to slowly warm up to the heating rate of 2oC/min ~ 5oC/min
1300ºC~1350ºC。
Further, crystallization process is kept the temperature specifically: the heat preservation crystallization 1.5h under the conditions of temperature of 1300oC ~ 1350oC
~3h。
Further, fast cooling process specifically: 650o is cooled to the rate of temperature fall of 60oC/min ~ 80oC/min
C~700ºC。
Further, secondary cooling process specifically: from 650oC ~ 700oC cooled to room temperature.
Further, in step S5, the additive amount and the crystal whisker toughened zirconia ceramics powder of molybdenum silicide of liquid phenolic resin
The ratio of weight is 0.5ml ~ 1ml:10g.
Further, hot-forming in step S5 specifically: forming temperature is 100oC ~ 120oC, and dwell pressure is
1.2MPa~2.5MPa。
It further, further include the face that all kinds of colorants are added in liquid phenolic resin and adjust mobile phone backboard in step S5
The step of color.
The invention has the advantages that
1. the present invention uses the crystal whisker toughened zirconium oxide of molybdenum silicide for raw material, ceramic mobile phone backboard is prepared, improves ceramic mobile phone back
The toughness and shock resistance of plate；Wherein, molybdenum silicide whisker has the advantages that high temperature resistant, good toughness, has metallic luster, toughening
Zirconium oxide improves the toughness and shock resistance of zirconium oxide, improves the properties of product of ceramic mobile phone backboard, and improves ceramic manual
The product glossiness of machine backboard；
2. the preparation method of the crystal whisker toughened zirconia ceramics mobile phone backboard of molybdenum silicide of the present invention is simple, easily operated, be conducive to advise
Modelling volume production improves the property and the market competitiveness of product.
Specific embodiment
The embodiment of the present invention is described in detail below, but what the present invention can be defined by the claims and cover
Multitude of different ways is implemented.
Embodiment 1
A kind of preparation method of the crystal whisker toughened zirconia ceramics mobile phone backboard of molybdenum silicide, comprising the following steps:
(1), the dispersion of 120g molybdenum silicide whisker is added in 10L isopropanol, stirs 4h under the speed conditions of 300r/min, obtains
To suspending liquid A；
(2), 1000g zirconia material is gradually added in the suspending liquid A that step S1 is obtained, is stirred under the revolving speed of 250r/min
4h is mixed, suspension B is obtained；
(3), the suspension B that (2) obtain is transferred in 80oC vacuum oven and is dried in vacuo 8h, it is brilliant to obtain powdery molybdenum silicide
Palpus/zirconium oxide presoma；
(4), powdery molybdenum silicide whisker/zirconium oxide presoma that (3) obtain is transferred in tube type vacuum atmosphere furnace, with 2oC/
The heating rate of min is to slowly warm up to 1300oC, the heat preservation crystallization 1.5h under the conditions of temperature of 1300oC, then with 60oC/min
Rate of temperature fall be cooled to 650oC, then from 650oC cooled to room temperature, form the crystal whisker toughened zirconia ceramics powder of molybdenum silicide
Body；
(5), liquid phenolic resin, liquid phenolic tree is added into the crystal whisker toughened zirconia ceramics powder of molybdenum silicide that (4) obtain
The color that titanium white colorant adjusts mobile phone backboard is added in rouge, is uniformly mixed, is molded into cell phone back board mold, is in forming temperature
100oC, dwell pressure is hot-forming to carry out under conditions of 1.2MPa, obtains the crystal whisker toughened zirconia ceramics hand of the molybdenum silicide
Machine backboard；Wherein, the ratio of the additive amount of liquid phenolic resin and the crystal whisker toughened zirconia ceramics powder body weight of molybdenum silicide is
0.5ml:10g。
Embodiment 2
A kind of preparation method of the crystal whisker toughened zirconia ceramics mobile phone backboard of molybdenum silicide, comprising the following steps:
(1), the dispersion of 180g molybdenum silicide whisker is added in 10L isopropanol, stirs 6h under the speed conditions of 400r/min, obtains
To suspending liquid A；
(2), 1000g zirconia material is gradually added in the suspending liquid A that step S1 is obtained, is stirred under the revolving speed of 300r/min
8h is mixed, suspension B is obtained；
(3), the suspension B that (2) obtain is transferred in 90oC vacuum oven and is dried in vacuo 12h, it is brilliant to obtain powdery molybdenum silicide
Palpus/zirconium oxide presoma；
(4), powdery molybdenum silicide whisker/zirconium oxide presoma that (3) obtain is transferred in tube type vacuum atmosphere furnace, with 5oC/
The heating rate of min is to slowly warm up to 1350oC, the heat preservation crystallization 3h under the conditions of temperature of 1350oC, then with 80oC/min's
Rate of temperature fall is cooled to 700oC, then from 700oC cooled to room temperature, obtains the crystal whisker toughened zirconia ceramics powder of molybdenum silicide；
(5), liquid phenolic resin, liquid phenolic tree is added into the crystal whisker toughened zirconia ceramics powder of molybdenum silicide that (4) obtain
The color that lead chromate yellow colorant adjusts mobile phone backboard is added in rouge, is uniformly mixed, is molded into cell phone back board mold, in forming temperature
For 120oC, dwell pressure is hot-forming to carry out under conditions of 2.5MPa, obtains the crystal whisker toughened zirconia ceramics of the molybdenum silicide
Mobile phone backboard；Wherein, the ratio of the additive amount of liquid phenolic resin and the crystal whisker toughened zirconia ceramics powder body weight of molybdenum silicide is
1ml:10g。
Embodiment 3
A kind of preparation method of the crystal whisker toughened zirconia ceramics mobile phone backboard of molybdenum silicide, comprising the following steps:
(1), the dispersion of 150g molybdenum silicide whisker is added in 10L isopropanol, stirs 5h under the speed conditions of 350r/min, obtains
To suspending liquid A；
(2), 1000g zirconia material is gradually added in the suspending liquid A that step S1 is obtained, is stirred under the revolving speed of 275r/min
6h is mixed, suspension B is obtained；
(3), the suspension B that (2) obtain is transferred in vacuum oven and is dried in vacuo 10h, obtain powdery molybdenum silicide whisker/oxygen
Change zirconium precursor body；
(4), powdery molybdenum silicide whisker/zirconium oxide presoma that (3) obtain is transferred in tube type vacuum atmosphere furnace, with 3.5oC/
The heating rate of min is to slowly warm up to 1325oC, the heat preservation crystallization 2.2h under the conditions of temperature of 1325oC, then with 70oC/min
Rate of temperature fall be cooled to 675oC, then from 675oC cooled to room temperature, form the crystal whisker toughened zirconia ceramics powder of molybdenum silicide
Body；
(5), liquid phenolic resin, liquid phenolic tree is added into the crystal whisker toughened zirconia ceramics powder of molybdenum silicide that (4) obtain
The color that all kinds of colorants adjust mobile phone backboard is added in rouge, is uniformly mixed, is molded into cell phone back board mold, is in forming temperature
110oC, dwell pressure is hot-forming to carry out under conditions of 1.8MPa, obtains the crystal whisker toughened zirconia ceramics hand of the molybdenum silicide
Machine backboard；Wherein, the ratio of the additive amount of liquid phenolic resin and the crystal whisker toughened zirconia ceramics powder body weight of molybdenum silicide is
0.75ml:10g。
Embodiment 4
A kind of preparation method of the crystal whisker toughened zirconia ceramics mobile phone backboard of molybdenum silicide, comprising the following steps:
(1), the dispersion of 130g molybdenum silicide whisker is added in 10L isopropanol, stirs 4.5h under the speed conditions of 320r/min,
Obtain suspending liquid A；
(2), 1000g zirconia material is gradually added in the suspending liquid A that step S1 is obtained, is stirred under the revolving speed of 260r/min
5h is mixed, suspension B is obtained；
(3), the suspension B that (2) obtain is transferred in vacuum oven and is dried in vacuo 9h, obtain powdery molybdenum silicide whisker/oxygen
Change zirconium precursor body；
(4), powdery molybdenum silicide whisker/zirconium oxide presoma that (3) obtain is transferred in tube type vacuum atmosphere furnace, with 3oC/
The heating rate of min is to slowly warm up to 1310oC, the heat preservation crystallization 2h under the conditions of temperature of 1310oC, then with 65oC/min's
Rate of temperature fall is cooled to 660oC, then from 660oC cooled to room temperature, forms the crystal whisker toughened zirconia ceramics powder of molybdenum silicide；
(5), liquid phenolic resin, liquid phenolic tree is added into the crystal whisker toughened zirconia ceramics powder of molybdenum silicide that (4) obtain
The color that all kinds of colorants adjust mobile phone backboard is added in rouge, is uniformly mixed, is molded into cell phone back board mold, is in forming temperature
105oC, dwell pressure is hot-forming to carry out under conditions of 1.5MPa, obtains the crystal whisker toughened zirconia ceramics hand of the molybdenum silicide
Machine backboard；Wherein, the ratio of the additive amount of liquid phenolic resin and the crystal whisker toughened zirconia ceramics powder body weight of molybdenum silicide is
0.6ml:10g。
Embodiment 5
A kind of preparation method of the crystal whisker toughened zirconia ceramics mobile phone backboard of molybdenum silicide, comprising the following steps:
(1), the dispersion of 170g molybdenum silicide whisker is added in 10L isopropanol, stirs 5.5h under the speed conditions of 380r/min,
Obtain suspending liquid A；
(2), 100 parts by weight zirconia materials are gradually added in the suspending liquid A that step S1 is obtained, in the revolving speed of 290r/min
Lower stirring 7h, obtains suspension B；
(3), the suspension B that (2) obtain is transferred in vacuum oven and is dried in vacuo 11h, obtain powdery molybdenum silicide whisker/oxygen
Change zirconium precursor body；
(4), powdery molybdenum silicide whisker/zirconium oxide presoma that (3) obtain is transferred in tube type vacuum atmosphere furnace, with 4.5oC/
The heating rate of min is to slowly warm up to 1340oC, the heat preservation crystallization 2.5h under the conditions of temperature of 1340oC, then with 75oC/min
Rate of temperature fall be cooled to 690oC, then from 690oC cooled to room temperature, form the crystal whisker toughened zirconia ceramics powder of molybdenum silicide
Body；
(5), liquid phenolic resin, liquid phenolic tree is added into the crystal whisker toughened zirconia ceramics powder of molybdenum silicide that (4) obtain
The color that all kinds of colorants adjust mobile phone backboard is added in rouge, is uniformly mixed, is molded into cell phone back board mold, is in forming temperature
115oC, dwell pressure is hot-forming to carry out under conditions of 2.2MPa, obtains the crystal whisker toughened zirconia ceramics hand of the molybdenum silicide
Machine backboard；Wherein, the ratio of the additive amount of liquid phenolic resin and the crystal whisker toughened zirconia ceramics powder body weight of molybdenum silicide is
0.9ml:10g。
Embodiment 6
A kind of preparation method of the crystal whisker toughened zirconia ceramics mobile phone backboard of molybdenum silicide, comprising the following steps:
(1), the dispersion of 175g molybdenum silicide whisker is added in 10L isopropanol, stirs 5h under the speed conditions of 310r/min, obtains
To suspending liquid A；
(2), 1000g zirconia material is gradually added in the suspending liquid A that step S1 is obtained, is stirred under the revolving speed of 280r/min
6.5h is mixed, suspension B is obtained；
(3), the suspension B that (2) obtain is transferred in vacuum oven and is dried in vacuo 10h, obtain powdery molybdenum silicide whisker/oxygen
Change zirconium precursor body；
(4), powdery molybdenum silicide whisker/zirconium oxide presoma that (3) obtain is transferred in tube type vacuum atmosphere furnace, with 3oC/
The heating rate of min is to slowly warm up to 1330oC, the heat preservation crystallization 2h under the conditions of temperature of 1330oC, then with 75oC/min's
Rate of temperature fall is cooled to 680oC, then from 680oC cooled to room temperature, forms the crystal whisker toughened zirconia ceramics powder of molybdenum silicide；
(5), liquid phenolic resin, liquid phenolic tree is added into the crystal whisker toughened zirconia ceramics powder of molybdenum silicide that (4) obtain
The color that all kinds of colorants adjust mobile phone backboard is added in rouge, is uniformly mixed, is molded into cell phone back board mold, is in forming temperature
112oC, dwell pressure is hot-forming to carry out under conditions of 2.4MPa, obtains the crystal whisker toughened zirconia ceramics hand of the molybdenum silicide
Machine backboard；Wherein, the ratio of the additive amount of liquid phenolic resin and the crystal whisker toughened zirconia ceramics powder body weight of molybdenum silicide is
0.8ml:10g。
Experimental example 1
Y1 ~ Y6 is labeled as to the crystal whisker toughened zirconia ceramics mobile phone backboard of molybdenum silicide using the preparation of 1 ~ 6 preparation method of embodiment,
The performance of Y1 ~ Y6 is tested, test result is as shown in table 1.
The performance test of the crystal whisker toughened zirconia ceramics mobile phone backboard of molybdenum silicide of 1 embodiment of table, 1 ~ 6 preparation method preparation
As a result
| Project | Fracture toughness | Morse hardness | Vickers hardness | Flexural strength | Thermal conductivity |
| Y1 | 27MPa·m1/2 | 9 | 1360HV | 1350MPa | 2W/mK |
| Y2 | 28MPa·m1/2 | 9.2 | 1380HV | 1380MPa | 1.8W/mK |
| Y3 | 29MPa·m1/2 | 9.3 | 1400HV | 1400MPa | 1.7W/mK |
| Y4 | 28.5MPa·m1/2 | 9.5 | 1410HV | 1390MPa | 1.9W/mK |
| Y5 | 27.5MPa·m1/2 | 9.3 | 1390HV | 1380MPa | 1.8W/mK |
| Y6 | 27.2MPa·m1/2 | 9.1 | 1365HV | 1370MPa | 1.92W/mK |
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, and comes for those skilled in the art
It says, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any modification, equivalent
Replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of preparation method of the crystal whisker toughened zirconia ceramics mobile phone backboard of molybdenum silicide, which comprises the following steps:
12 parts by weight ~ 18 parts by weight molybdenum silicide whiskers dispersion is added in isopropanol, in 300r/min ~ 400r/ by step S1
4h ~ 6h is stirred under the speed conditions of min, obtains suspending liquid A；
100 parts by weight zirconia materials are gradually added in the suspending liquid A that step S1 is obtained by step S2,250r/min ~
4h ~ 8h is stirred under the revolving speed of 300r/min, obtains suspension B；
The suspension B that step S2 is obtained is transferred to vacuum drying 8h ~ 12h in vacuum oven, obtains powdery silication by step S3
Molybdenum whisker/zirconium oxide presoma；
Powdery molybdenum silicide whisker/zirconium oxide presoma that step S3 is obtained is transferred to tube type vacuum atmosphere Oven Sintered Technology by step S4
At the crystal whisker toughened zirconia ceramics powder of molybdenum silicide；
Liquid phenolic resin is added in the crystal whisker toughened zirconia ceramics powder of the molybdenum silicide obtained to step S4 in step S5, mixes
Uniformly, it is molded into cell phone back board mold, it is hot-forming, obtain the crystal whisker toughened zirconia ceramics mobile phone backboard of the molybdenum silicide.
2. preparation method according to claim 1, which is characterized in that in step S1, the additive amount and silicon of the isopropanol
Change the ratio of molybdenum whisker quality are as follows: 1L:12g ~ 18g.
3. preparation method according to claim 1, which is characterized in that in step S4, the tube type vacuum atmosphere Oven Sintered Technology
Process includes slow temperature-rise period, heat preservation crystallization process, fast cooling process, secondary cooling process.
4. preparation method according to claim 3, which is characterized in that the slow temperature-rise period specifically: with 2oC/min
The heating rate of ~ 5oC/min is to slowly warm up to 1300oC ~ 1350oC.
5. preparation method according to claim 3, which is characterized in that the heat preservation crystallization process specifically: 1300oC ~
Heat preservation crystallization 1.5h ~ 3h under the conditions of the temperature of 1350oC.
6. preparation method according to claim 3, which is characterized in that the fast cooling process specifically: with 60oC/
The rate of temperature fall of min ~ 80oC/min is cooled to 650oC ~ 700oC.
7. preparation method according to claim 3, which is characterized in that the secondary cooling process specifically: from 650oC ~
700oC cooled to room temperature.
8. preparation method according to claim 1, which is characterized in that in step S5, the addition of the liquid phenolic resin
The ratio of amount and the crystal whisker toughened zirconia ceramics powder body weight of molybdenum silicide is 0.5ml ~ 1ml:10g.
9. preparation method according to claim 1, which is characterized in that described hot-forming in step S5 specifically: molding
Temperature is 100oC ~ 120oC, and dwell pressure is 1.2MPa ~ 2.5MPa.
10. preparation method according to claim 1, which is characterized in that further include in liquid phenolic resin in step S5
The step of all kinds of colorants adjust the color of mobile phone backboard is added.
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| CN201810919936.2A CN108975763B (en) | 2018-08-14 | 2018-08-14 | Preparation method of molybdenum silicide whisker toughened zirconia ceramic mobile phone back plate |
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| CN101948325A (en) * | 2010-09-14 | 2011-01-19 | 浙江科技学院 | Synergistic toughening alumina ceramic and preparation method thereof |
| US20180105468A1 (en) * | 2012-05-09 | 2018-04-19 | Thomas Blaszczykiewicz | Cermet material |
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| CN107417296A (en) * | 2017-08-25 | 2017-12-01 | 南通通州湾新材料科技有限公司 | Honeycomb blind hole toughened zirconium oxide ceramic mobile phone backboard and preparation method thereof |
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