CN106187187A - Ceramic preparation, pottery and basalt bushing - Google Patents
Ceramic preparation, pottery and basalt bushing Download PDFInfo
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- CN106187187A CN106187187A CN201610511857.9A CN201610511857A CN106187187A CN 106187187 A CN106187187 A CN 106187187A CN 201610511857 A CN201610511857 A CN 201610511857A CN 106187187 A CN106187187 A CN 106187187A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 115
- 238000002360 preparation method Methods 0.000 title claims abstract description 75
- 239000000843 powder Substances 0.000 claims abstract description 99
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 57
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 57
- 239000000654 additive Substances 0.000 claims abstract description 55
- 230000000996 additive effect Effects 0.000 claims abstract description 55
- 239000002131 composite material Substances 0.000 claims abstract description 37
- NFYLSJDPENHSBT-UHFFFAOYSA-N chromium(3+);lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Cr+3].[La+3] NFYLSJDPENHSBT-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000005245 sintering Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 22
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 22
- 238000001035 drying Methods 0.000 claims description 17
- DTDCCPMQHXRFFI-UHFFFAOYSA-N dioxido(dioxo)chromium lanthanum(3+) Chemical compound [La+3].[La+3].[O-][Cr]([O-])(=O)=O.[O-][Cr]([O-])(=O)=O.[O-][Cr]([O-])(=O)=O DTDCCPMQHXRFFI-UHFFFAOYSA-N 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 229910052727 yttrium Inorganic materials 0.000 claims description 7
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 229910052684 Cerium Inorganic materials 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 claims description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052706 scandium Inorganic materials 0.000 claims description 3
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims description 3
- 229910052712 strontium Inorganic materials 0.000 claims description 3
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 229910000629 Rh alloy Inorganic materials 0.000 abstract description 4
- PXXKQOPKNFECSZ-UHFFFAOYSA-N platinum rhodium Chemical compound [Rh].[Pt] PXXKQOPKNFECSZ-UHFFFAOYSA-N 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 description 12
- 239000008187 granular material Substances 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 230000002045 lasting effect Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000005491 wire drawing Methods 0.000 description 4
- 229920002748 Basalt fiber Polymers 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 2
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Chemical compound [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 1
- CSSYLTMKCUORDA-UHFFFAOYSA-N barium(2+);oxygen(2-) Chemical compound [O-2].[Ba+2] CSSYLTMKCUORDA-UHFFFAOYSA-N 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- HYXGAEYDKFCVMU-UHFFFAOYSA-N scandium oxide Chemical compound O=[Sc]O[Sc]=O HYXGAEYDKFCVMU-UHFFFAOYSA-N 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- -1 yittrium oxide Chemical compound 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
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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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/50—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/08—Bushings, e.g. construction, bushing reinforcement means; Spinnerettes; Nozzles; Nozzle plates
- C03B37/095—Use of materials therefor
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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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/50—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds
- C04B35/505—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds based on yttrium oxide
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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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3241—Chromium oxides, chromates, or oxide-forming salts thereof
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
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- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
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- Structural Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention relates to ceramic preparation, pottery and basalt bushing.Described ceramic preparation, comprises the following steps: prepare Lanthanum Chromite, zirconium oxide/yittrium oxide and the powder of additive respectively；The Lanthanum Chromite of preparation and the powder of additive are made the first ceramic green blanket；Forming composite bed on the first ceramic green blanket of preparation, wherein said composite bed includes zirconium oxide/yittrium oxide；By described first ceramic green blanket and composite bed Thermocompressed sintering and forming.Use pottery prepared by above-mentioned ceramic preparation, within porosity can be controlled in 20%.This pottery is homogeneous, and has preferable resistance to elevated temperatures and electric conductivity；This pottery has higher intensity and good warping resistance and break resistance, it is possible to bear certain load.In consideration of it, use this kind of ceramic preparation technology to can be used for making special process equipment, such as, it is used for making the base plate of basalt bushing, substitutes the base plate that traditional platinum-rhodium alloy is made, greatly reduce production cost.
Description
Technical field
The present invention relates to material manufacturing technology field, more particularly, to a kind of ceramic preparation, pottery and basalt
Bushing.
Background technology
Technical field is made, such as basalt fibre manufacturing technology field, often high temperature resistant to the equipment of production at first system
Performance, electric conductivity and intensity have high requirement.
During basalt pyrosol is carried out wire drawing, bushing needs at very high temperatures, the highest
Carrying out operation under conditions of reaching 1200-1300 DEG C, this just requires that bushing has good heat-resisting quantity in the course of the work
Energy.
On the other hand, owing to basaltic melt temperature is high, viscosity is big and easy crystallize, the more difficult control of wire-drawing temperature, need
To be electrically heated the base plate of bushing simultaneously, to ensure basalt fused solution temperature in drawing process, this will
The base plate seeking bushing has good electric conductivity.
Furthermore, basalt fused solution is by the outflow of leting slip a remark on the base plate of described bushing, in the lower section of described base plate
By wire drawing machine, fused solution is drawn into basalt continuous fiber, owing to basalt fused solution has higher viscosity so that institute
Stating base plate to need to bear great pulling force, this just requires that described base plate has higher intensity and good warping resistance and resists disconnected
Fragility energy.
In consideration of it, the base plate of basalt wire drawing floor of the prior art makes often through platinum-rhodium alloy, to meet
The very high performance requirement to the base plate of bushing of the basalt fibre manufacture process.But, the cost of manufacture of this bushing
High.Meanwhile, use the ceramic bushing that existing technique makes, can not meet again the base plate of bushing to resistance to elevated temperatures, lead
Electrical property and the high requirement of intensity.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of can production and there is high resistance to elevated temperatures, electric conductivity
The ceramic preparation of the pottery of the excellent properties such as energy and intensity.
Another object of the present invention is to provide a kind of and can have high resistance to elevated temperatures, electric conductivity and intensity
Pottery.
Another object of the present invention is to provide a kind of basalt bushing that can effectively reduce cost of manufacture.
According to the first aspect of the invention, it is provided that a kind of ceramic preparation, comprise the following steps:
Prepare Lanthanum Chromite, zirconium oxide/yittrium oxide and the powder of additive respectively；
The Lanthanum Chromite of preparation and the powder of additive are made the first ceramic green blanket；
Forming composite bed on the first ceramic green blanket of preparation, wherein said composite bed includes zirconium oxide/yittrium oxide；
By described first ceramic green blanket and composite bed Thermocompressed sintering and forming.
Preferably, described composite bed also includes additive.
Preferably, prepare the first ceramic green blanket to comprise the following steps:
By Lanthanum Chromite and the powder mix homogeneously according to a certain percentage of additive of preparation；
Powder after mix homogeneously is dried；
Powder after drying carries out compacting and generates the first ceramic green blanket.
Preferably, the step forming composite bed on the first ceramic green blanket of preparation includes:
Zirconium oxide/yttrium oxide powder is dried；
The zirconium oxide of preparation/yttrium oxide powder compacting is generated the second ceramic green blanket, or in described first ceramic green
Zirconium oxide/the yttrium oxide powder of preparation is arranged on blanket.
Preferably, described additive includes Determination of multiple metal elements.
Preferably, two kinds at least within during described metallic element includes strontium, barium, titanium, yttrium, cerium and scandium.
Preferably, described Determination of multiple metal elements is presented in each autoxidisable substance.
Preferably, the step of the powder preparing Lanthanum Chromite, zirconium oxide/yittrium oxide and additive respectively includes:
Respectively the various components of Lanthanum Chromite, zirconium oxide/yittrium oxide and additive are put in ball mill, carry out continuous powder
Broken, make micropowder.
Preferably, the particle diameter of described micropowder is 1-3 μm.
Preferably, during preparation ceramic green blanket and formation composite bed, described Lanthanum Chromite, additive and oxygen
Change zirconium/yttrium oxide powder according to lanthanum chromate powder 84-87 part, additive 0.5-1 and zirconium oxide/yttrium oxide powder 9-11 part
Parts by weight are added.
Preferably, the step that the described powder of preparation carries out drying is included:
It is maintained at a temperature of 230 DEG C-270 DEG C, the powder after mix homogeneously is carried out continuously the drying of 8-12 hour.
Preferably, the step of described first ceramic green blanket and composite bed Thermocompressed sintering and forming is included:
By described first ceramic green blanket and composite bed in mould, pressurize in limit, and limit sinters, wherein said pressurization
Process is divided into multiple stage to carry out, and releases moulding pressure after pressurization a period of time so that after workpiece to be added release stress, then row adds
Pressure.
Preferably, the sintering temperature of described powder is 1100-1400 DEG C.
Preferably, the purity of described Lanthanum Chromite, zirconium oxide/yittrium oxide and additive is 99.80-99.99%.
According to the second aspect of the invention, it is provided that a kind of pottery, the ceramic preparation described in described pottery employing is made.
According to the third aspect of the invention we, it is provided that a kind of basalt bushing, the base plate of described basalt bushing
Ceramic preparation described in employing is made.
Use pottery prepared by above-mentioned ceramic preparation, within porosity can be controlled in 20%.This pottery is homogeneous,
The most easy to crack, and there is preferable resistance to elevated temperatures and electric conductivity, even can make under conditions of up to 1400 degrees Celsius
With；On the other hand, the pottery using this ceramic preparation to prepare has higher intensity and good warping resistance and resists disconnected
Fragility energy, it is possible to bear certain load.In consideration of it, use this kind of ceramic preparation technology to can be used for making special process equipment,
Such as it is used for making the base plate of basalt bushing, substitutes the base plate that traditional platinum-rhodium alloy is made, well make in guarantee
While performance, greatly reduce production cost.
Accompanying drawing explanation
By description to the embodiment of the present invention referring to the drawings, above-mentioned and other purposes of the present invention, feature and
Advantage will be apparent from.
Fig. 1 is the flow chart of steps of the ceramic preparation according to the embodiment of the present invention；
Fig. 2 is the flow chart of steps of preparation the first ceramic green blanket according to the embodiment of the present invention.
Detailed description of the invention
It is more fully described various embodiments of the present invention hereinafter with reference to accompanying drawing.In various figures, identical element
Same or similar reference is used to represent.For the sake of clarity, the various piece in accompanying drawing is not necessarily to scale.
Fig. 1 shows the step of ceramic preparation according to embodiments of the present invention.Detailed below in conjunction with several embodiments
The ceramic preparation described in explanation.
Embodiment one:
S1) Lanthanum Chromite, zirconium oxide or yittrium oxide, and the powder of additive are prepared, respectively.
In this step, first choose highly purified various raw material, including Lanthanum Chromite, zirconium oxide or yittrium oxide, and
Additive, it is desirable to purity >=98% of various raw materials, preferably 99.80-99.99%, in order to strict control composition proportioning；
Then, respectively by Lanthanum Chromite, zirconium oxide or yittrium oxide, and the various components of additive are put in ball mill,
Pulverize continuously, make micropowder.Preferably, the particle diameter of described micropowder is 5-25 μm, more preferably 1-3 μm,
The ceramic quality made so can be made more uniform.
S2), the Lanthanum Chromite of preparation and the powder of additive are made the first ceramic green blanket.
With reference to Fig. 2, in this step, step in detail below is included again:
A), by step S1) in the Lanthanum Chromite of preparation and the powder of additive according to lanthanum chromate powder 84 parts, additive powder
The parts by weight doping of 0.5 part mix homogeneously, wherein, the proportion relation between each component of described additive needs according to reality
It is added；
B), it is maintained at a temperature of 230 DEG C, the powder after mix homogeneously is carried out continuously the drying of 8 hours, to go gumming
Moisture in end, it is ensured that strict composition proportion；
C), will dry after powder carry out pre-stamped, generate ceramic green blanket.
S3), forming composite bed on the first ceramic green blanket of preparation, wherein said composite bed includes zirconium oxide and oxidation
The corresponding described lanthanum chromate powder of any one in yttrium, zirconium oxide used or yttrium oxide powder and the parts by weight of additive powder
It it is 9 parts.
In this step, zirconium oxide/yttrium oxide powder is dried.Then, a kind of scheme is by the zirconium oxide of preparation
Or yttrium oxide powder carries out pre-stamped, generate the second ceramic green blanket, and by step S2) middle the first ceramic green blanket prepared
Put in mould, then stacked second ceramic green blanket on the first ceramic green blanket；Another kind of scheme is by described the
One ceramic green blanket is put in mould, then on described first ceramic green blanket directly arrange preparation zirconium oxide or
Yttrium oxide powder, forms corresponding powder bed.
Those skilled in the art should be appreciated that described composite bed raw material can also for zirconium oxide or yittrium oxide with add
The mixing of charging, corresponding concrete technology flow process is identical with the principle of the first ceramic green blanket, repeats no more here.
S4), by described first ceramic green blanket and composite bed under the high temperature of 1100 DEG C, Thermocompressed sintering and forming.
In this step, the mould that will be equipped with the first ceramic green blanket and composite bed is integrally placed in sintering furnace,
Such as being placed in closed Medium frequency induction hot-pressed sintering furnace, pressurizes in limit, and limit sinters, and the process of wherein said pressurization is divided into multiple
Stage is carried out, and such as, can be divided into seven times or eight times pressurizations as required；Moulding pressure is released after pressurization a period of time so that
After workpiece to be added release stress, then row pressurization, in order to avoid make the stress of workpiece to be added have little time release due to lasting pressurization
And cause workpiece to be added to ftracture.
Powder in one embodiment, before the powder after drying carries out hot pressed sintering, after can first drying
End carries out pelletize, then carries out Thermocompressed sintering and forming in mould being put into by the granule made.
Embodiment two:
S1) Lanthanum Chromite, zirconium oxide or yittrium oxide, and the powder of additive are prepared, respectively.
In this step, first choose highly purified various raw material, including Lanthanum Chromite, zirconium oxide or yittrium oxide, and
Additive, it is desirable to purity >=98% of various raw materials, preferably 99.80-99.99%, in order to strict control composition proportioning；
Then, respectively by Lanthanum Chromite, zirconium oxide or yittrium oxide, and the various components of additive are put in ball mill,
Pulverize continuously, make micropowder.Preferably, the particle diameter of described micropowder is 5-25 μm, more preferably 1-3 μm,
The ceramic quality made so can be made more uniform.
S2), the Lanthanum Chromite of preparation and the powder of additive are made the first ceramic green blanket.
With reference to Fig. 2, in this step, step in detail below is included again:
A), by step S1) in the Lanthanum Chromite of preparation and the powder of additive according to lanthanum chromate powder 85 parts, additive powder
The parts by weight doping of 0.75 part mix homogeneously, wherein, the proportion relation between each component of described additive is according to reality
Needs are added；
B), it is maintained at a temperature of 240 DEG C, the powder after mix homogeneously is carried out continuously the drying of 9 hours, to go gumming
Moisture in end, it is ensured that strict composition proportion；
C), will dry after powder carry out pre-stamped, generate ceramic green blanket.
S3), forming composite bed on the first ceramic green blanket of preparation, wherein said composite bed includes zirconium oxide and oxidation
The corresponding described lanthanum chromate powder of any one in yttrium, zirconium oxide used or yttrium oxide powder and the parts by weight of additive powder
It it is 10 parts.
In this step, zirconium oxide/yttrium oxide powder is dried.Then, a kind of scheme is by the zirconium oxide of preparation
Or yttrium oxide powder carries out pre-stamped, generate the second ceramic green blanket, and by step S2) middle the first ceramic green blanket prepared
Put in mould, then stacked second ceramic green blanket on the first ceramic green blanket；Another kind of scheme is by described the
One ceramic green blanket is put in mould, then on described first ceramic green blanket directly arrange preparation zirconium oxide or
Yttrium oxide powder, forms corresponding powder bed.
Those skilled in the art should be appreciated that described composite bed raw material can also for zirconium oxide or yittrium oxide with add
The mixing of charging, corresponding concrete technology flow process is identical with the principle of the first ceramic green blanket, repeats no more here.
S4), by described first ceramic green blanket and composite bed under the high temperature of 1200 DEG C, Thermocompressed sintering and forming.
In this step, the mould that will be equipped with the first ceramic green blanket and composite bed is integrally placed in sintering furnace,
Such as being placed in closed Medium frequency induction hot-pressed sintering furnace, pressurizes in limit, and limit sinters, and the process of wherein said pressurization is divided into multiple
Stage is carried out, and such as, can be divided into seven times or eight times pressurizations as required；Moulding pressure is released after pressurization a period of time so that
After workpiece to be added release stress, then row pressurization, in order to avoid make the stress of workpiece to be added have little time release due to lasting pressurization
And cause workpiece to be added to ftracture.
Powder in one embodiment, before the powder after drying carries out hot pressed sintering, after can first drying
End carries out pelletize, then carries out Thermocompressed sintering and forming in mould being put into by the granule made.
Embodiment three:
S1) Lanthanum Chromite, zirconium oxide or yittrium oxide, and the powder of additive are prepared, respectively.
In this step, first choose highly purified various raw material, including Lanthanum Chromite, zirconium oxide or yittrium oxide, and
Additive, it is desirable to purity >=98% of various raw materials, preferably 99.80-99.99%, in order to strict control composition proportioning；
Then, respectively by Lanthanum Chromite, zirconium oxide or yittrium oxide, and the various components of additive are put in ball mill,
Pulverize continuously, make micropowder.Preferably, the particle diameter of described micropowder is 5-25 μm, more preferably 1-3 μm,
The ceramic quality made so can be made more uniform.
S2), the Lanthanum Chromite of preparation and the powder of additive are made the first ceramic green blanket.
With reference to Fig. 2, in this step, step in detail below is included again:
A), by step S1) in the Lanthanum Chromite of preparation and the powder of additive according to lanthanum chromate powder 86 parts, additive powder
The parts by weight doping of 0.9 part mix homogeneously, wherein, the proportion relation between each component of described additive needs according to reality
It is added；
B), it is maintained at a temperature of 250 DEG C, the powder after mix homogeneously is carried out continuously the drying of 10 hours, to remove
Moisture in powder, it is ensured that strict composition proportion；
C), will dry after powder carry out pre-stamped, generate ceramic green blanket.
S3), forming composite bed on the first ceramic green blanket of preparation, wherein said composite bed includes zirconium oxide and oxidation
The corresponding described lanthanum chromate powder of any one in yttrium, zirconium oxide used or yttrium oxide powder and the parts by weight of additive powder
It it is 11 parts.
In this step, zirconium oxide/yttrium oxide powder is dried.Then, a kind of scheme is by the zirconium oxide of preparation
Or yttrium oxide powder carries out pre-stamped, generate the second ceramic green blanket, and by step S2) middle the first ceramic green blanket prepared
Put in mould, then stacked second ceramic green blanket on the first ceramic green blanket；Another kind of scheme is by described the
One ceramic green blanket is put in mould, then on described first ceramic green blanket directly arrange preparation zirconium oxide or
Yttrium oxide powder, forms corresponding powder bed.
Those skilled in the art should be appreciated that described composite bed raw material can also for zirconium oxide or yittrium oxide with add
The mixing of charging, corresponding concrete technology flow process is identical with the principle of the first ceramic green blanket, repeats no more here.
S4), by described first ceramic green blanket and composite bed under the high temperature of 1300 DEG C, Thermocompressed sintering and forming.
In this step, the mould that will be equipped with the first ceramic green blanket and composite bed is integrally placed in sintering furnace,
Such as being placed in closed Medium frequency induction hot-pressed sintering furnace, pressurizes in limit, and limit sinters, and the process of wherein said pressurization is divided into multiple
Stage is carried out, and such as, can be divided into seven times or eight times pressurizations as required；Moulding pressure is released after pressurization a period of time so that
After workpiece to be added release stress, then row pressurization, in order to avoid make the stress of workpiece to be added have little time release due to lasting pressurization
And cause workpiece to be added to ftracture.
Powder in one embodiment, before the powder after drying carries out hot pressed sintering, after can first drying
End carries out pelletize, then carries out Thermocompressed sintering and forming in mould being put into by the granule made.
Embodiment four:
S1) Lanthanum Chromite, zirconium oxide or yittrium oxide, and the powder of additive are prepared, respectively.
In this step, first choose highly purified various raw material, including Lanthanum Chromite, zirconium oxide or yittrium oxide, and
Additive, it is desirable to purity >=98% of various raw materials, preferably 99.80-99.99%, in order to strict control composition proportioning；
Then, respectively by Lanthanum Chromite, zirconium oxide or yittrium oxide, and the various components of additive are put in ball mill,
Pulverize continuously, make micropowder.Preferably, the particle diameter of described micropowder is 5-25 μm, more preferably 1-3 μm,
The ceramic quality made so can be made more uniform.
S2), the Lanthanum Chromite of preparation and the powder of additive are made the first ceramic green blanket.
With reference to Fig. 2, in this step, step in detail below is included again:
A), by step S1) in the Lanthanum Chromite of preparation and the powder of additive according to lanthanum chromate powder 87 parts, additive powder
The parts by weight doping of 0.9 part mix homogeneously, wherein, the proportion relation between each component of described additive needs according to reality
It is added；
B), it is maintained at a temperature of 250 DEG C, the powder after mix homogeneously is carried out continuously the drying of 11 hours, to remove
Moisture in powder, it is ensured that strict composition proportion；
C), will dry after powder carry out pre-stamped, generate ceramic green blanket.
S3), forming composite bed on the first ceramic green blanket of preparation, wherein said composite bed includes zirconium oxide and oxidation
The corresponding described lanthanum chromate powder of any one in yttrium, zirconium oxide used or yttrium oxide powder and the parts by weight of additive powder
It it is 11 parts.
In this step, zirconium oxide/yttrium oxide powder is dried.Then, a kind of scheme is by the zirconium oxide of preparation
Or yttrium oxide powder carries out pre-stamped, generate the second ceramic green blanket, and by step S2) middle the first ceramic green blanket prepared
Put in mould, then stacked second ceramic green blanket on the first ceramic green blanket；Another kind of scheme is by described the
One ceramic green blanket is put in mould, then on described first ceramic green blanket directly arrange preparation zirconium oxide or
Yttrium oxide powder, forms corresponding powder bed.
Those skilled in the art should be appreciated that described composite bed raw material can also for zirconium oxide or yittrium oxide with add
The mixing of charging, corresponding concrete technology flow process is identical with the principle of the first ceramic green blanket, repeats no more here.
S4), by described first ceramic green blanket and composite bed under the high temperature of 1400 DEG C, Thermocompressed sintering and forming.
In this step, the mould that will be equipped with the first ceramic green blanket and composite bed is integrally placed in sintering furnace,
Such as being placed in closed Medium frequency induction hot-pressed sintering furnace, pressurizes in limit, and limit sinters, and the process of wherein said pressurization is divided into multiple
Stage is carried out, and such as, can be divided into seven times or eight times pressurizations as required；Moulding pressure is released after pressurization a period of time so that
After workpiece to be added release stress, then row pressurization, in order to avoid make the stress of workpiece to be added have little time release due to lasting pressurization
And cause workpiece to be added to ftracture.
Powder in one embodiment, before the powder after drying carries out hot pressed sintering, after can first drying
End carries out pelletize, then carries out Thermocompressed sintering and forming in mould being put into by the granule made.
In the above embodiments one to embodiment four, described additive includes Determination of multiple metal elements, such as strontium, barium, titanium,
In yttrium, cerium and scandium two kinds at least within.Described Determination of multiple metal elements presented in each autoxidisable substance, such as strontium oxide,
Barium monoxide, titanium dioxide, yittrium oxide, ceria and scandium oxide.Described additive can increase the high temperature of pottery
Heat stability and electric conductivity, can also play the effect of crystal grain thinning simultaneously.
Use pottery prepared by above-mentioned ceramic preparation, within porosity can be controlled in 20%.This pottery is homogeneous,
The most easy to crack, and there is preferable resistance to elevated temperatures and electric conductivity, even can make under conditions of up to 1400 degrees Celsius
With；On the other hand, the pottery using this ceramic preparation to prepare has higher intensity and good warping resistance and resists disconnected
Fragility energy, it is possible to bear certain load.In consideration of it, use this kind of ceramic preparation technology to can be used for making special process equipment,
Such as it is used for making the base plate of basalt bushing, substitutes the base plate that traditional platinum-rhodium alloy is made, well make in guarantee
While performance, greatly reduce production cost.
It should be noted that, in this article, the relational terms of such as first and second or the like is used merely to a reality
Body or operation separate with another entity or operating space, and deposit between not necessarily requiring or imply these entities or operating
Relation or order in any this reality.And, term " includes ", " comprising " or its any other variant are intended to
Comprising of nonexcludability, so that include that the process of a series of key element, method, article or equipment not only include that those are wanted
Element, but also include other key elements being not expressly set out, or also include for this process, method, article or equipment
Intrinsic key element.In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that
Including process, method, article or the equipment of described key element there is also other identical element.
It is last that it is noted that obviously above-described embodiment is only for clearly demonstrating example of the present invention, and also
The non-restriction to embodiment.For those of ordinary skill in the field, can also do on the basis of the above description
Go out change or the variation of other multi-form.Here without also cannot all of embodiment be given exhaustive.And thus drawn
What Shen went out obviously changes or changes among still in protection scope of the present invention.
Claims (16)
1. a ceramic preparation, it is characterised in that comprise the following steps:
Prepare Lanthanum Chromite, zirconium oxide/yittrium oxide and the powder of additive respectively；
The Lanthanum Chromite of preparation and the powder of additive are made the first ceramic green blanket；
Forming composite bed on the first ceramic green blanket of preparation, wherein said composite bed includes zirconium oxide/yittrium oxide；
By described first ceramic green blanket and composite bed Thermocompressed sintering and forming.
Ceramic preparation the most according to claim 1, it is characterised in that described composite bed also includes additive.
Ceramic preparation the most according to claim 1, it is characterised in that prepare the first ceramic green blanket and include following step
Rapid:
By Lanthanum Chromite and the powder mix homogeneously according to a certain percentage of additive of preparation；
Powder after mix homogeneously is dried；
Powder after drying carries out compacting and generates the first ceramic green blanket.
Ceramic preparation the most according to claim 1, it is characterised in that formed on the first ceramic green blanket of preparation
The step of composite bed includes:
Zirconium oxide/yttrium oxide powder is dried；
The zirconium oxide of preparation/yttrium oxide powder compacting is generated the second ceramic green blanket, or at described first ceramic green blanket
Upper zirconium oxide/the yttrium oxide powder arranging preparation.
Ceramic preparation the most according to claim 1, it is characterised in that described additive includes Determination of multiple metal elements.
Ceramic preparation the most according to claim 5, it is characterised in that described metallic element include strontium, barium, titanium, yttrium,
In cerium and scandium two kinds at least within.
Ceramic preparation the most according to claim 6, it is characterised in that described Determination of multiple metal elements is with each autoxidisable substance
Presented in.
Ceramic preparation the most according to claim 1, it is characterised in that prepare Lanthanum Chromite, zirconium oxide/yittrium oxide respectively
And the step of the powder of additive includes:
Respectively the various components of Lanthanum Chromite, zirconium oxide/yittrium oxide and additive are put in ball mill, pulverize continuously,
Make micropowder.
Ceramic preparation the most according to claim 8, it is characterised in that the particle diameter of described micropowder is 1-3 μm.
Ceramic preparation the most according to claim 3, it is characterised in that multiple at preparation ceramic green blanket and formation
During closing layer, described Lanthanum Chromite, additive and zirconium oxide/yttrium oxide powder are according to lanthanum chromate powder 84-87 part, interpolation
The parts by weight of material 0.5-1 and zirconium oxide/yttrium oxide powder 9-11 part are added.
11. according to the ceramic preparation described in claim 3 or 4, it is characterised in that carried out by the described powder of preparation
The step dried includes:
It is maintained at a temperature of 230 DEG C-270 DEG C, the powder after mix homogeneously is carried out continuously the drying of 8-12 hour.
12. ceramic preparations according to claim 1, it is characterised in that by described first ceramic green blanket with compound
The step of layer Thermocompressed sintering and forming includes:
By described first ceramic green blanket and composite bed in mould, pressurize in limit, and limit sinters, the process of wherein said pressurization
It is divided into multiple stage to carry out, after pressurization a period of time, releases moulding pressure so that after workpiece to be added release stress, then row pressurization.
13. ceramic preparations according to claim 12, it is characterised in that the sintering temperature of described powder is 1100-
1400℃。
14. ceramic preparations according to claim 12, it is characterised in that described Lanthanum Chromite, zirconium oxide/yittrium oxide with
And the purity of additive is 99.80-99.99%.
15. 1 kinds of potteries, it is characterised in that described pottery uses the ceramic preparation system described in any one of claim 1-14
Become.
16. 1 kinds of basalt bushings, it is characterised in that the base plate of described basalt bushing uses claim 1-14
Ceramic preparation described in any one is made.
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| JPH07326468A (en) * | 1994-05-31 | 1995-12-12 | Kyocera Corp | Ceramic heating element |
| CN1153446A (en) * | 1995-12-29 | 1997-07-02 | 黄安荣 | Electrothermal lanthanum chromate body and its mfg. method |
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