CN105948742A - Preparation method of white zirconia ceramic - Google Patents
Preparation method of white zirconia ceramic Download PDFInfo
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- CN105948742A CN105948742A CN201610256059.6A CN201610256059A CN105948742A CN 105948742 A CN105948742 A CN 105948742A CN 201610256059 A CN201610256059 A CN 201610256059A CN 105948742 A CN105948742 A CN 105948742A
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Abstract
The invention discloses a white zirconia ceramic material composition. The composition includes: by weight, aluminium oxide 0.01-35%, magnesium oxide 0-20%, calcium oxide 0-20%, strontium oxide 0-20%, barium oxide 0-20%, yttrium oxide 1.5-8%, and balance zirconium oxide containing hafnium oxide. The white zirconia ceramic material composition has small powder granularity and uniform dispersion, and the white zirconia ceramic containing the composition has high whiteness and light-proofness, and low transmissivity. Moreover, the invention also discloses white zirconia ceramic prepared from the white zirconia ceramic material composition and a preparation method of the white zirconia ceramic.
Description
Technical field
The present invention relates to a kind of ceramic material and preparation method thereof, especially a kind of zirconia ceramics material and
Preparation method.
Background technology
Zirconia ceramic has the superiority such as high intensity, high rigidity, high elastic modulus, chemical stability be good
Can, at catalyst, oxygen sensitive sensor, high-temperature solid fuel cell, chemically inert surface's material, resistance to
Fire material, decorative appearance material, and the aspect such as biomaterial suffers from wide application prospect.
The preparation of white oxide zircon ceramic at present mainly uses following two method: 1, zirconium surface entered
Row sputtering or application to printed, as sputtered aluminium oxide or the silicon oxide of last layer 10-200um on zirconium oxide base material
Thin film, on zirconium oxide printing on substrates 1-5 layer not wait black or the ink of white.By sputtering layer and print
Absorption and the reflection of light are improved its whiteness and obscurity by brush layer, reduce its transmittance；2, mix in zirconium oxide
The impurity such as miscellaneous magnesium, calcium, make porous material by zirconium oxide, make the scattering in zirconia base of the raising light and
Refrangibility, thus improve covering power and the whiteness of zirconia material, reduce its transmittance.In zirconium surface
Carry out sputtering or application to printed, on the one hand add manufacturing procedure and workload, on the other hand sputtering and printing
There is adhesion and the poor adhesion of the even property of became uneven, coating and zirconia base in coating, particularly at height
The special environments such as gentle high humidity are easily peeled off and drop.And the impurity such as magnesium-doped in zirconium oxide, calcium are synthesizing porous
Material, then be easily reduced intensity and the fracture toughness of zirconia ceramics, reduce its hardness, it is impossible to embodies oxidation
The advantage of zircon ceramic material.
From the foregoing, existing white oxide zircon ceramic attenuated polishing is to less than below 1mm, color is shallower,
Transmittance is big, and covering power is poor, it is impossible to meet the requirement of the outer light part such as mobile phone board of high whiteness height light-proofness.
Summary of the invention
There is provided in place of it is an object of the invention to overcome above-mentioned the deficiencies in the prior art one have high whiteness,
The white oxide zircon ceramic material compositions of high light-proofness and low light transmission and the white oxygen containing described compositions
Change zircon ceramic.Meanwhile, present invention also offers the preparation method of described white oxide zircon ceramic.
For achieving the above object, the technical scheme that the present invention takes is: a kind of white oxide zircon ceramic material group
Compound, comprises the composition of following weight/mass percentage composition: aluminium oxide 0.01～35wt%, magnesium oxide 0～20wt%,
Calcium oxide 0～20wt%, strontium oxide 0～20wt%, Barium monoxide 0～20wt%, yittrium oxide 1.5～8wt%,
Surplus is the zirconium oxide containing hafnium oxide.
In the white oxide zircon ceramic material compositions of the present invention, with the addition of the coloring agent of white, added
Oxide can be coated with and coprecipitation in preparation process in the form of an ion, it is possible to significantly improves and is made by it
The covering power of the standby white oxide zircon ceramic obtained and whiteness, reduce transmittance.
As the preferred implementation of white oxide zircon ceramic material compositions of the present invention, described containing aerobic
Changing in the zirconium oxide of hafnium, the weight/mass percentage composition of described hafnium oxide is less than 50%.
As the preferred implementation of white oxide zircon ceramic material compositions of the present invention, described white oxygen
Change zircon ceramic material compositions and comprise the composition of following weight/mass percentage composition: aluminium oxide 5～32wt%, magnesium oxide
1～15wt%, calcium oxide 0.01～15wt%, strontium oxide 0.01～15wt%, Barium monoxide 0.01～15wt%,
Yittrium oxide 2～7wt%, surplus is the zirconium oxide containing hafnium oxide.When described white oxide zircon ceramic material group
When compound contains above-described quality proportioning, gained white oxide zircon ceramic material compositions prepares
White oxide zircon ceramic has higher whiteness and light-proofness, and transmittance is relatively low.
As the preferred implementation of white oxide zircon ceramic material compositions of the present invention, described white oxygen
Change zircon ceramic material compositions and comprise the composition of following weight/mass percentage composition: aluminium oxide 5～30wt%, magnesium oxide
1～10wt%, calcium oxide 0.01～10wt%, strontium oxide 0.01～10wt%, Barium monoxide 0.01～10wt%,
Yittrium oxide 2～6wt%, surplus is the zirconium oxide containing hafnium oxide.When described white oxide zircon ceramic combination of materials
When thing contains above-described quality proportioning, it is white that gained white oxide zircon ceramic material compositions prepares
Color zirconia ceramics has higher whiteness and light-proofness, and transmittance is lower.
As the preferred implementation of white oxide zircon ceramic material compositions of the present invention, described aluminium oxide,
Magnesium oxide, calcium oxide, strontium oxide and the Barium monoxide quality in described white oxide zircon ceramic material compositions
Percentage composition summation is 5～40%.
As the preferred implementation of white oxide zircon ceramic material compositions of the present invention, described white oxygen
Changing zircon ceramic material compositions is powder body, and powder body D50 granularity is 0.1-3um, and specific surface area is 5-25m2/g。
It addition, another object of the present invention is to provide one to have high blackness, high light-proofness and low light transmission
White oxide zircon ceramic, for realizing this purpose, the technical scheme that the present invention takes is: a kind of white oxide
Zircon ceramic, described white oxide zircon ceramic comprises white oxide zircon ceramic material compositions as above.
The white oxide zircon ceramic of the present invention contains white oxide zircon ceramic material compositions as above, tool
There are high whiteness, high light-proofness and the advantage of low light transmission.The white oxide zircon ceramic of the present invention is by described above
After white oxide zircon ceramic material compositions is prepared from, formed by atoms such as aluminum, calcium, magnesium, strontium, barium
Surface coating to zirconia grains, forms one layer of oxide skin(coating), changes light pair on zirconia grains surface
The refractive index of zirconia ceramics, improves light scattering in zirconia ceramics, thus improves the reflection of light
Rate, can have the covering power that high whiteness is become reconciled under less than 1mm thickness.And owing to using Surface coating skill
Art is doped, and neither affects the stable system solid solution of yttria-zirconia, and inhibited oxidation zirconium crystal grain is long simultaneously
Greatly, ageing resistace and the heat stability of zirconia ceramics can be effectively improved.
As the preferred implementation of white oxide zircon ceramic of the present invention, described white oxide zircon ceramic is
Transmittance ＜ 10 under polishing thickness 0.1-1.0mm, 550nm wavelength, OD value ＞ 3.0, chromatic value L ＞ 95
Potsherd.
Finally, it is still another object of the present invention to provide that a kind of technique is simple, facilitate implementation described above in vain
The preparation method of color zirconia ceramics, for realizing this purpose, the technical scheme that the present invention takes is: Yi Zhongru
The preparation method of upper described white oxide zircon ceramic, comprises the following steps:
(1) each material contained by white oxide zircon ceramic material compositions is mixed, obtain white oxide zirconium pottery
Ceramic material compositions；
(2) being shaped by the white oxide zircon ceramic material compositions that step (1) obtains, roasting obtains
White oxide zircon ceramic；
Described step (2) is shaped to flow casting molding, dry-pressing formed, injection moulding, hot-forming or solidifying
Glue injection forming.
The preparation method of white oxide zircon ceramic of the present invention, the Zirconium powder granularity of preparation is little, dispersion
Uniformly, the oxide of doping is evenly coated at zirconia powder surface, can be effectively improved powder active, molding
Function admirable, can meet dry-pressing, be cast, the different pottery such as injection uses the demands of techniques, the pottery sintered
Porcelain fracture is fine and close, the defect such as pore-free, crackle.And the preparation of described technique is simple, easily operates, does not increases
Production process and workload, can realize volume production, has preferable stability, it is possible to realizes homogenizing of product.
Use the white oxide zircon ceramic that the method for the invention prepares, become porcelain density >=5.5g/cm3, three
Point rupture strength >=1300Mpa, Vickers hardness >=1400.
As the preferred implementation of the preparation method of white oxide zircon ceramic of the present invention, described step (2)
In be shaped to flow casting molding, dry-pressing formed or injection moulding；
Described flow casting molding comprises the following steps:
(1a) ball milling: by described white oxide zircon ceramic material compositions and dispersant and binding agent at ball milling
Mix homogeneously in machine；
(2a) flow casting molding: the slurry after being uniformly dispersed by ball milling carries out flow casting molding in casting machine, adjusts
Technological parameter is prolonged in throttling, and prepared thickness is the curtain coating base substrate of 0.2-1.1mm；
(3a) punch forming: prepared curtain coating base substrate is put in the mould designed and carries out punch forming,
Prepare blank；
(4a) binder removal sintering: punching press base substrate carries out binder removal sintering, and wherein the binder removal time is 60-100h, burns
The knot time is 40-60h, obtains described white oxide zircon ceramic；
Described dry-pressing formed comprise the following steps:
(1b) ball milling pelletize: described white oxide zircon ceramic material compositions and dispersant, binding agent are existed
Mix homogeneously in ball mill, and on sponging granulator, carry out drying-granulating；
(2b) dry-pressing: the powder body that pelletize is good is laid in the dry pressing die set designed is carried out dry-pressing formed,
Prepare dry-pressing base；
(3b) binder removal sintering: punching press base substrate carries out binder removal sintering, and wherein the binder removal time is 60-100h, burns
The knot time is 40-60h, obtains described white oxide zircon ceramic；
Described injection moulding comprises the following steps:
(1c) internally mix: described white oxide zircon ceramic material compositions is carried out in internal mixer with binding agent
Mix homogeneously, makes injection molding raw material；
(2c) pelletize: pockets of for internally mix raw material is carried out extruding pelletization in comminutor, produces size equal
Even particulate material, particle length is at 2-3mm；
(3c) injection moulding: use injection (mo(u)lding) machine to be shaped particulate material good for pelletize, make ejection
Body, injection temperature is 160-175 DEG C, and injection pressure is 30-60Mpa；
(4c) defat: first the base substrate that injection moulding is good is put in solvent and carries out extraction dewaxing, then taking off
The base substrate of wax is put into and is carried out thermal debinding in draft glue discharging furnace, and solvent degreasing temperature is 45-55 DEG C, and degreasing time is
15-20h, thermal debinding temperature is 400-500 DEG C, and degreasing time is 45-55h；
(5c) sintering: the base substrate having taken off fat is put in sintering furnace and is sintered, make base substrate become porcelain, sintering
Temperature 1300-1600 DEG C, sintering time is 25-35h, obtains described white oxide zircon ceramic.
As the preferred implementation of the preparation method of white oxide zircon ceramic of the present invention, described in be cast into
In type, the dispersant in step (1a) is at least one in polyacrylic acid, Polyethylene Glycol and glycerol, institute
Stating the binding agent in step (1a) is at least one in PVB, DOP, BBP, DBP；Described dry-pressing
In molding, in step (1b) dispersant is PEG, DBS and polyacrylic acid apoplexy due to endogenous wind at least one, step
Suddenly the binding agent in (1b) is at least one in PVA, PMMA；In described injection moulding, step (1c)
In the mixture that binding agent is polypropylene, polyethylene and paraffin.
In described flow casting molding, powder dispersing uniformity in casting slurry directly affects the quality of base film,
Thus affect the series of characteristics such as the compactness of material, the porosity and mechanical property.Tape-casting is commonly used
Dispersant have nonionic, anion, cation and amphion 4 type.Dispersant prioritizing selection gathers
Acrylic acid；During flow casting molding, in order to separate with baseplate material and taking and placing convenience, casting films must possess
Certain intensity, toughness and ductility.To this end, need in the slurry to add binding agent.Functional group pressed by binding agent
It is divided into nonionic, anion and cation 3 class, the one of binding agent preferred PVB, DOP, BBP, DBP
Plant or several.Described dry-pressing formed in, in dry-pressing, the dispersibility of powder body directly affects mobility and the pine of powder body
Dress density, and then affect the compactness of material, the porosity and mechanical property.Conventional dispersant be PEG,
One or more of DBS and polyacrylic.Binding agent then affects the intensity of dry-pressing base, it is generally preferable to
PVA, PMMA etc. one or more.
White oxide zircon ceramic material compositions of the present invention, powder granularity is little, is uniformly dispersed, containing it
White oxide zircon ceramic there is high whiteness, high light-proofness and the advantage of low light transmission.White of the present invention
Zirconia ceramics, is formed the zirconia grains containing hafnium oxide by atoms such as aluminum, calcium, magnesium, strontium, barium
Surface coating, containing hafnium oxide zirconia grains surface formed one layer of oxide skin(coating), change light pair
The refractive index of the zirconia ceramics containing hafnium oxide, improves light in the zirconia ceramics containing hafnium oxide
Scattering, thus improve the reflectance of light, can there is the covering power that high whiteness is become reconciled under less than 1mm thickness.
The preparation method of white oxide zircon ceramic material of the present invention, technique preparation is simple, easily operates, does not increases
Production process and workload, can realize volume production, has preferable stability, it is possible to realizes homogenizing of product.
Detailed description of the invention
For better illustrating the object, technical solutions and advantages of the present invention, below in conjunction with specific embodiment pair
The present invention is described further.
Embodiment 1
A kind of embodiment of white oxide zircon ceramic material compositions of the present invention, white oxide described in the present embodiment
Zircon ceramic material compositions contains the component of following weight/mass percentage composition: aluminium oxide 0.01%, magnesium oxide 20%,
Calcium oxide 15%, strontium oxide 20%, Barium monoxide 0.01%, yittrium oxide 8%, surplus is the oxygen containing hafnium oxide
Change zirconium；In the described zirconium oxide containing hafnium oxide, hafnium oxide matter in the described zirconium oxide containing hafnium oxide
Amount percentage composition is 20%.
The white oxide zircon ceramic material compositions of the present embodiment is powder body, and described powder body D50 granularity is 3um,
Specific surface area is 5m2/g。
Embodiment 2
A kind of embodiment of white oxide zircon ceramic material compositions of the present invention, white oxide described in the present embodiment
Zircon ceramic material compositions contains the component of following weight/mass percentage composition: aluminium oxide 5%, magnesium oxide 15%, oxygen
Changing calcium 1%, strontium oxide 10%, Barium monoxide 20%, yittrium oxide 7%, surplus is the zirconium oxide containing hafnium oxide；
In the described zirconium oxide containing hafnium oxide, hafnium oxide percent mass in the described zirconium oxide containing hafnium oxide
Content is 5%.
The white oxide zircon ceramic material compositions of the present embodiment is powder body, and described powder body D50 granularity is
2.5um, specific surface area is 8m2/g。
Embodiment 3
A kind of embodiment of white oxide zircon ceramic material compositions of the present invention, white oxide described in the present embodiment
Zircon ceramic material compositions contains the component of following weight/mass percentage composition: aluminium oxide 8%, magnesium oxide 6%, oxygen
Changing calcium 8%, strontium oxide 3%, Barium monoxide 5%, yittrium oxide 6%, surplus is the zirconium oxide containing hafnium oxide；
In the described zirconium oxide containing hafnium oxide, hafnium oxide percent mass in the described zirconium oxide containing hafnium oxide
Content is 15%.
The white oxide zircon ceramic material compositions of the present embodiment is powder body, and described powder body D50 granularity is 2um,
Specific surface area is 12m2/g。
Embodiment 4
A kind of embodiment of white oxide zircon ceramic material compositions of the present invention, white oxide described in the present embodiment
Zircon ceramic material compositions contains the component of following weight/mass percentage composition: aluminium oxide 12%, magnesium oxide 8%, oxygen
Changing calcium 6%, strontium oxide 5%, Barium monoxide 8%, yittrium oxide 4%, surplus is the zirconium oxide containing hafnium oxide；
In the described zirconium oxide containing hafnium oxide, hafnium oxide percent mass in the described zirconium oxide containing hafnium oxide
Content is 30%.
The white oxide zircon ceramic material compositions of the present embodiment is powder body, and described powder body D50 granularity is 1um,
Specific surface area is 18m2/g。
Embodiment 5
A kind of embodiment of white oxide zircon ceramic material compositions of the present invention, white oxide described in the present embodiment
Zircon ceramic material compositions contains the component of following weight/mass percentage composition: aluminium oxide 35%, magnesium oxide 1%, oxygen
Changing calcium 0.01%, strontium oxide 15%, Barium monoxide 15%, yittrium oxide 3%, surplus is the oxidation containing hafnium oxide
Zirconium；In the described zirconium oxide containing hafnium oxide, hafnium oxide quality in the described zirconium oxide containing hafnium oxide
Percentage composition is 40%.
The white oxide zircon ceramic material compositions of the present embodiment is powder body, and described powder body D50 granularity is
0.1um, specific surface area is 25m2/g。
Embodiment 6
A kind of embodiment of white oxide zircon ceramic material compositions of the present invention, white oxide described in the present embodiment
Zircon ceramic material compositions contains the component of following weight/mass percentage composition: aluminium oxide 30%, yittrium oxide 1.5%,
Surplus is the zirconium oxide containing hafnium oxide；In the described zirconium oxide containing hafnium oxide, hafnium oxide contains described
Weight/mass percentage composition in the zirconium oxide of hafnium oxide is 8%.
The white oxide zircon ceramic material compositions of the present embodiment is powder body, and described powder body D50 granularity is
0.5um, specific surface area is 20m2/g。
Embodiment 7
The performance test of white oxide zircon ceramic
The present embodiment arranges test group 1～6, and the white oxide zircon ceramic material of described test group 1～6 is respectively adopted
The white oxide zircon ceramic material compositions of embodiment 1～6 is prepared from, the white oxide zirconium of test group 1～6
Using same preparation method to be prepared from, described preparation method comprises the following steps:
(1) each material contained by white oxide zircon ceramic material compositions is mixed, obtain white oxide zirconium pottery
Ceramic material compositions；
(2) being shaped by the white oxide zircon ceramic material compositions that step (1) obtains, roasting obtains
White oxide zircon ceramic；
Described step (2) is shaped to flow casting molding, dry-pressing formed, injection moulding, hot-forming or solidifying
Glue injection forming.
Wherein, described flow casting molding comprises the following steps:
(1a) ball milling: by (described with dispersant and binding agent for described white oxide zircon ceramic material compositions
At least one in the acid of dispersant optimization polypropylene, Polyethylene Glycol and glycerol, the preferred PVB of described binding agent,
At least one in DOP, BBP, DBP) mix homogeneously in ball mill；
(2a) flow casting molding: the slurry after being uniformly dispersed by ball milling carries out flow casting molding in casting machine, adjusts
Technological parameter is prolonged in throttling, and prepared thickness is the curtain coating base substrate of 0.2-1.1mm；
(3a) punch forming: prepared curtain coating base substrate is put in the mould designed and carries out punch forming,
Prepare blank；
(4a) binder removal sintering: punching press base substrate carries out binder removal sintering, and wherein the binder removal time is 60-100h, burns
The knot time is 40-60h, obtains described white oxide zircon ceramic；
Described dry-pressing formed comprise the following steps:
(1b) ball milling pelletize: by described white oxide zircon ceramic material compositions and dispersant, binding agent (institute
State at least one of dispersant preferred PEG, DBS and polyacrylic acid apoplexy due to endogenous wind, the preferred PVA of described binding agent,
At least one in PMMA) mix homogeneously in ball mill, and on sponging granulator, carry out drying-granulating；
(2b) dry-pressing: the powder body that pelletize is good is laid in the dry pressing die set designed is carried out dry-pressing formed,
Prepare dry-pressing base；
(3b) binder removal sintering: punching press base substrate carries out binder removal sintering, and wherein the binder removal time is 60-100h, burns
The knot time is 40-60h, obtains described white oxide zircon ceramic；
Described injection moulding comprises the following steps:
(1c) internally mix: (described binding agent is excellent with binding agent by described white oxide zircon ceramic material compositions
Select the mixture of polypropylene, polyethylene and paraffin) in internal mixer, carry out mix homogeneously, make injection moulding
Raw material；
(2c) pelletize: pockets of for internally mix raw material is carried out extruding pelletization in comminutor, produces size equal
Even particulate material, particle length is at 2-3mm；
(3c) injection moulding: use injection (mo(u)lding) machine to be shaped particulate material good for pelletize, make ejection
Body, injection temperature is 160-175 DEG C, and injection pressure is 30-60Mpa；
(4c) defat: first the base substrate that injection moulding is good is put in solvent and carries out extraction dewaxing, then taking off
The base substrate of wax is put into and is carried out thermal debinding in draft glue discharging furnace, and solvent degreasing temperature is 45-55 DEG C, and degreasing time is
15-20h, thermal debinding temperature is 400-500 DEG C, and degreasing time is 45-55h；
(5c) sintering: the base substrate having taken off fat is put in sintering furnace and is sintered, make base substrate become porcelain, sintering
Temperature 1300-1600 DEG C, sintering time is 25-35h, obtains described white oxide zircon ceramic.
The molding mode that test group 1～6 uses is identical, and the polishing of the white oxide zircon ceramic of test group 1～6 is thick
Spend the most identical (being 0.5mm).Survey the 550nm wavelength of the white oxide zircon ceramic of test group 1～6 respectively
Lower transmittance, OD value, chromatic value, one-tenth porcelain density, 3 rupture strengths and Vickers hardness, test result is such as
Shown in table 1.
The performance test results of table 1 white oxide zircon ceramic
As seen from the results in Table 1, the white oxide zircon ceramic of the present invention has high whiteness, high light-proofness and low
The white oxide zircon ceramic of the advantage of luminosity, especially test group 4, effect is more preferable.
Last institute is it should be noted that, above example is only in order to illustrate technical scheme rather than to this
The restriction of invention protection domain, although the present invention being explained in detail with reference to preferred embodiment, this area
It is to be appreciated by one skilled in the art that technical scheme can be modified or equivalent, and
Spirit and scope without departing from technical solution of the present invention.
Claims (10)
1. a white oxide zircon ceramic material compositions, it is characterised in that comprise following weight/mass percentage composition
Composition: aluminium oxide 0.01～35wt%, magnesium oxide 0～20wt%, calcium oxide 0～20wt%, strontium oxide 0～20
Wt%, Barium monoxide 0～20wt%, yittrium oxide 1.5～8wt%, surplus is the zirconium oxide containing hafnium oxide.
2. white oxide zircon ceramic material compositions as claimed in claim 1, it is characterised in that comprise with
The composition of lower weight/mass percentage composition: aluminium oxide 5～32wt%, magnesium oxide 1～15wt%, calcium oxide
0.01～15wt%, strontium oxide 0.01～15wt%, Barium monoxide 0.01～15wt%, yittrium oxide 2～7wt%, remaining
Amount is the zirconium oxide containing hafnium oxide.
3. white oxide zircon ceramic material compositions as claimed in claim 2, it is characterised in that comprise with
The composition of lower weight/mass percentage composition: aluminium oxide 5～30wt%, magnesium oxide 1～10wt%, calcium oxide
0.01～10wt%, strontium oxide 0.01～10wt%, Barium monoxide 0.01～10wt%, yittrium oxide 2～6wt%, remaining
Amount is the zirconium oxide containing hafnium oxide.
4. the white oxide zircon ceramic material compositions as described in any one of claims 1 to 3, it is characterised in that
Described aluminium oxide, magnesium oxide, calcium oxide, strontium oxide and Barium monoxide are in described white oxide zircon ceramic material group
Weight/mass percentage composition summation in compound is 5～40%.
5. the white oxide zircon ceramic material compositions as described in any one of Claims 1 to 4, it is characterised in that
Described white oxide zircon ceramic material compositions is powder body, and powder body D50 granularity is 0.1-3um, specific surface area
For 5-25m2/g。
6. a white oxide zircon ceramic, it is characterised in that described white oxide zircon ceramic comprises right such as to be wanted
Seek the white oxide zircon ceramic material compositions described in 1～5 any one.
7. white oxide zircon ceramic as claimed in claim 6, it is characterised in that described white oxide zirconium is made pottery
Porcelain is transmittance ＜ 10 under polishing thickness 0.1-1.0mm, 550nm wavelength, OD value ＞ 3.0, chromatic value L ＞
The potsherd of 95.
8. the preparation method of a white oxide zircon ceramic as claimed in claims 6 or 7, it is characterised in that
Comprise the following steps:
(1) each material contained by white oxide zircon ceramic material compositions is mixed, obtain white oxide zirconium pottery
Ceramic material compositions；
(2) being shaped by the white oxide zircon ceramic material compositions that step (1) obtains, roasting obtains
White oxide zircon ceramic；
Described step (2) is shaped to flow casting molding, dry-pressing formed, injection moulding, hot-forming or solidifying
Glue injection forming.
9. the preparation method of white oxide zircon ceramic as claimed in claim 8, it is characterised in that described step
Suddenly (2) it is shaped to flow casting molding, dry-pressing formed or injection moulding；
Described flow casting molding comprises the following steps:
(1a) ball milling: by described white oxide zircon ceramic material compositions and dispersant and binding agent at ball milling
Mix homogeneously in machine；
(2a) flow casting molding: the slurry after being uniformly dispersed by ball milling carries out flow casting molding in casting machine, adjusts
Technological parameter is prolonged in throttling, and prepared thickness is the curtain coating base substrate of 0.2-1.1mm；
(3a) punch forming: prepared curtain coating base substrate is put in the mould designed and carries out punch forming,
Prepare blank；
(4a) binder removal sintering: punching press base substrate carries out binder removal sintering, and wherein the binder removal time is 60-100h, burns
The knot time is 40-60h, obtains described white oxide zircon ceramic；
Described dry-pressing formed comprise the following steps:
(1b) ball milling pelletize: described white oxide zircon ceramic material compositions and dispersant, binding agent are existed
Mix homogeneously in ball mill, and on sponging granulator, carry out drying-granulating；
(2b) dry-pressing: the powder body that pelletize is good is laid in the dry pressing die set designed is carried out dry-pressing formed,
Prepare dry-pressing base；
(3b) binder removal sintering: punching press base substrate carries out binder removal sintering, and wherein the binder removal time is 60-100h, burns
The knot time is 40-60h, obtains described white oxide zircon ceramic；
Described injection moulding comprises the following steps:
(1c) internally mix: described white oxide zircon ceramic material compositions is carried out in internal mixer with binding agent
Mix homogeneously, makes injection molding raw material；
(2c) pelletize: pockets of for internally mix raw material is carried out extruding pelletization in comminutor, produces size equal
Even particulate material, particle length is at 2-3mm；
(3c) injection moulding: use injection (mo(u)lding) machine to be shaped particulate material good for pelletize, make ejection
Body, injection temperature is 160-175 DEG C, and injection pressure is 30-60Mpa；
(4c) defat: first the base substrate that injection moulding is good is put in solvent and carries out extraction dewaxing, then taking off
The base substrate of wax is put into and is carried out thermal debinding in draft glue discharging furnace, and solvent degreasing temperature is 45-55 DEG C, and degreasing time is
15-20h, thermal debinding temperature is 400-500 DEG C, and degreasing time is 45-55h；
(5c) sintering: the base substrate having taken off fat is put in sintering furnace and is sintered, make base substrate become porcelain, sintering
Temperature 1300-1600 DEG C, sintering time is 25-35h, obtains described white oxide zircon ceramic.
10. the preparation method of white oxide zircon ceramic as claimed in claim 9, it is characterised in that described
In flow casting molding, the dispersant in step (1a) is at least in polyacrylic acid, Polyethylene Glycol and glycerol
Kind, the binding agent in described step (1a) is at least one in PVB, DOP, BBP, DBP；Institute
State dry-pressing formed in, the dispersant in step (1b) is PEG, DBS and at least the one of polyacrylic acid apoplexy due to endogenous wind
Kind, the binding agent in step (1b) is at least one in PVA, PMMA；In described injection moulding,
The mixture that binding agent is polypropylene, polyethylene and paraffin in step (1c).
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