CN106145920B - Ceramic preparation, ceramics and basalt bushing - Google Patents
Ceramic preparation, ceramics and basalt bushing Download PDFInfo
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- CN106145920B CN106145920B CN201610513924.0A CN201610513924A CN106145920B CN 106145920 B CN106145920 B CN 106145920B CN 201610513924 A CN201610513924 A CN 201610513924A CN 106145920 B CN106145920 B CN 106145920B
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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
- C04B35/01—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
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- 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
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Abstract
The present invention relates to ceramic preparation, ceramics and basalt bushings.The ceramic preparation, comprising the following steps: prepare the powder of Lanthanum Chromite, graphene and additive respectively；Ceramic green blanket is made in the powder of the Lanthanum Chromite of preparation and additive；The composite graphite alkene layer on the ceramic green blanket of preparation；By the ceramic green blanket and graphene layer Thermocompressed sintering and forming.The ceramics prepared using above-mentioned ceramic preparation, porosity are can be controlled within 20%.The ceramics are homogeneous, not easy to crack, and have preferable high temperature resistance and electric conductivity；On the other hand, ceramics intensity with higher and good warping resistance and break resistance, are able to bear certain load.In consideration of it, can be used for making special process equipment using the ceramic preparation process of this kind, such as making the bottom plate of basalt bushing, to substitute bottom plate made of traditional platinum-rhodium alloy, while guaranteeing good service performance, greatly reduce production cost.
Description
Technical field
The present invention relates to material manufacture technical fields, more particularly, to a kind of ceramic preparation, ceramics and basalt
Bushing.
Background technique
Formerly into manufacturing technology field, such as basalt fibre manufacturing technology field, often to the high temperature resistant of production equipment
Performance, electric conductivity and intensity have high requirement.
During carrying out wire drawing to basalt pyrosol, bushing needs at very high temperatures, or even high
Operation is carried out under conditions of up to 1200-1300 DEG C, this requires bushings to have good heat-resisting quantity during the work time
Energy.
On the other hand, since basaltic melt temperature is high, viscosity is big and easy crystallization, wire-drawing temperature is more difficult to control, needs
Will the bottom plate to bushing be electrically heated simultaneously, to guarantee temperature of the basalt molten liquid in drawing process, this will
The bottom plate of bushing is asked to have good conductive property.
Furthermore the outflow of leting slip a remark on the bottom plate that basalt molten liquid passes through the bushing, in the lower section of the bottom plate
Molten liquid is drawn into basalt continuous fiber by wire drawing machine, due to basalt molten liquid viscosity with higher, so that institute
It states bottom plate and needs to bear great pulling force, this requires bottom plate intensity with higher and good warping resistance and resist disconnected
Fragility energy.
In consideration of it, the bottom plate of basalt wire drawing floor in the prior art makes often through platinum-rhodium alloy, to meet
Very high performance requirement of the basalt fibre manufacturing process to the bottom plate of bushing.But the cost of manufacture of this bushing
It is high.Meanwhile the ceramic bushing made of prior art, and be not able to satisfy the bottom plate of bushing to high temperature resistance, lead
The high requirement of electrical property and intensity.
Summary of the invention
In view of this, being able to produce the purpose of the present invention is to provide a kind of with high high temperature resistance, electric conductivity
The ceramic preparation of the ceramics of the excellent properties such as energy and intensity.
Another object of the present invention is to provide one kind can have high high temperature resistance, electric conductivity and intensity
Ceramics.
According to a first aspect of the present invention, a kind of ceramic preparation is provided, comprising the following steps:
The powder of Lanthanum Chromite, graphene and additive is prepared respectively；
Ceramic green blanket is made in the powder of the Lanthanum Chromite of preparation and additive；
The composite graphite alkene layer on the ceramic green blanket of preparation；
By the ceramic green blanket and graphene layer Thermocompressed sintering and forming.
Preferably, prepare ceramic green blanket the following steps are included:
The powder of the Lanthanum Chromite of preparation and additive is uniformly mixed according to a certain percentage；
Powder after mixing is dried；
Powder after drying is subjected to compacting and generates ceramic green blanket.
Preferably, include: in the step of composite graphite alkene layer on the ceramic green blanket of preparation
The graphene powder compacting of preparation is generated into graphene green sheet, or arranges preparation on the ceramic green blanket
Graphene powder.
Preferably, the additive includes Determination of multiple metal elements.
Preferably, the metallic element includes two kinds at least in strontium, barium, titanium, yttrium, cerium and scandium.
Preferably, the Determination of multiple metal elements exists in the form of each autoxidisable substance.
Preferably, the step of preparing the powder of Lanthanum Chromite, graphene and additive respectively include:
The various components of Lanthanum Chromite, graphene and additive are put into ball mill respectively, is continuously crushed, is made
Superfine powder.
Preferably, the particle diameter of the superfine powder is 1-3 μm.
Preferably, the step powder of the Lanthanum Chromite of preparation, graphene and additive being uniformly mixed according to a certain percentage
Suddenly include:
During preparing ceramic green blanket and composite graphite alkene layer, the Lanthanum Chromite, additive and graphene
Powder is added according to the parts by weight of 84-87 parts of lanthanum chromate powder, additive 0.5-1 and 5-7 parts of graphene powder, part
Add.
Preferably, the step of powder after mixing being dried include:
It is maintained at a temperature of 230 DEG C -270 DEG C, drying in 8-12 hours is carried out continuously to powder after mixing.
Preferably, include: by the step of powder progress hot pressed sintering after drying
Powder after drying is put into molding die, side pressurization, side sintering, wherein the process of the pressurization be divided into it is multiple
Stage carries out, and releases moulding pressure after a period of time of pressurizeing, so that after workpiece to be added release stress, then row pressurization.
Preferably, the sintering temperature of the powder is 1100-1400 DEG C.
Preferably, the purity of the Lanthanum Chromite, graphene and additive is 99.80-99.99%.
According to the second aspect of the invention, a kind of ceramics are provided, the ceramics are made of the ceramic preparation.
According to the third aspect of the invention we, a kind of basalt bushing, the bottom plate of the basalt bushing are provided
It is made of the ceramic preparation.
The ceramics prepared using above-mentioned ceramic preparation, porosity are can be controlled within 20%.The ceramics are homogeneous,
It is not easy to crack, and there is preferable high temperature resistance and electric conductivity, or even can make under conditions of up to 1400 degrees Celsius
With；On the other hand, broken using the ceramic intensity with higher of ceramic preparation preparation and good warping resistance with anti-
Fragility energy is able to bear certain load.In consideration of it, can be used for making special process equipment using the ceramic preparation process of this kind,
Such as making the bottom plate of basalt bushing, to substitute bottom plate made of traditional platinum-rhodium alloy, guaranteeing well to make
While with performance, production cost is greatly reduced.
Detailed description of the invention
By referring to the drawings to the description of the embodiment of the present invention, above-mentioned and other purposes of the invention, feature and
Advantage will be apparent from.
Fig. 1 is the step flow chart according to the ceramic preparation of the embodiment of the present invention；
Fig. 2 is the step flow chart according to the preparation ceramic green blanket of the embodiment of the present invention.
Specific embodiment
The various embodiments that the present invention will be described in more detail that hereinafter reference will be made to the drawings.In various figures, identical element
It is indicated using same or similar appended drawing reference.For the sake of clarity, the various pieces in attached drawing are not necessarily to scale.
Fig. 1 shows the step of ceramic preparation according to an embodiment of the present invention.It is detailed below with reference to several embodiments
Explanation described in ceramic preparation.
Embodiment one:
S1), the powder of Lanthanum Chromite, graphene and additive is prepared respectively.
In this step, the various raw materials of high-purity, including Lanthanum Chromite, graphene and additive are chosen first, it is desirable that
Purity >=98% of various raw materials, preferably 99.80-99.99%, so as to strict control composition proportion；
Then, the various components of Lanthanum Chromite, graphene and additive are put into ball mill respectively, carry out continuous powder
It is broken, superfine powder is made.Preferably, the particle diameter of the superfine powder is 5-25 μm, more preferably 1-3 μm, be may make in this way
Manufactured ceramics quality is more uniform.
S2), ceramic green blanket is made in the powder of the Lanthanum Chromite of preparation and additive.
With reference to Fig. 2, in this step, and comprising the following specific steps
A), by the powder of the Lanthanum Chromite and additive that are prepared in step S1) according to 84 parts of lanthanum chromate powder, additive powder
0.5 part of parts by weight are adulterated and are uniformly mixed, wherein the proportion relation between each component of the additive is according to practical need
It is added；
B), it is maintained at a temperature of 230 DEG C, drying in 8 hours is carried out continuously to powder after mixing, goes gumming
Moisture in end guarantees stringent composition proportion；
C), the powder after drying is put into molding die and is suppressed, generate ceramic green blanket.
S3), the composite graphite alkene layer on the ceramic green blanket of preparation, wherein graphene powder used corresponds to the Lanthanum Chromite
The parts by weight of powder and additive powder are 5 parts.
In this step, it is pre-stamped to be that the graphene powder that will prepare carries out for a kind of scheme, generates graphene green sheet, and
The ceramic green blanket prepared in step S2) is put into molding die, graphene blanket is then stacked on ceramic green blanket；Separately
A kind of scheme is that the ceramic green blanket is put into molding die, the then directly arrangement preparation on the ceramic green blanket
Graphene powder forms Graphene powder last layer.
S4), by a high temperature of the ceramic green blanket and 1100 DEG C of graphene layer, Thermocompressed sintering and forming.
In this step, the molding die equipped with ceramic green blanket and graphene layer is integrally placed in sintering furnace, example
It is such as placed in closed Medium frequency induction hot-pressed sintering furnace, side pressurization, side sintering, wherein the process of the pressurization is divided into multiple ranks
Duan Jinhang, for example, seven times or eight times pressurizations can be divided into as needed；Moulding pressure is released after pressurization a period of time, so as to
Workpiece discharge stress after, then row pressurization, in order to avoid made due to lasting pressurization the stress of workpiece to be added have little time release and
Workpiece to be added is caused to crack.
It in one embodiment, can be first by the powder after drying before the powder after drying carries out hot pressed sintering
End is granulated, and then the particle made is put into molding die again and carries out Thermocompressed sintering and forming.
Embodiment two:
S1), the powder of Lanthanum Chromite, graphene and additive is prepared respectively.
In this step, the various raw materials of high-purity, including Lanthanum Chromite, graphene and additive are chosen first, it is desirable that
Purity >=98% of various raw materials, preferably 99.80-99.99%, so as to strict control composition proportion；
Then, the various components of Lanthanum Chromite, graphene and additive are put into ball mill respectively, carry out continuous powder
It is broken, superfine powder is made.Preferably, the particle diameter of the superfine powder is 5-25 μm, more preferably 1-3 μm, be may make in this way
Manufactured ceramics quality is more uniform.
S2), ceramic green blanket is made in the powder of the Lanthanum Chromite of preparation and additive.
With reference to Fig. 2, in this step, and comprising the following specific steps
A), by the powder of the Lanthanum Chromite and additive that are prepared in step S1) according to 85 parts of lanthanum chromate powder, additive powder
0.75 part of parts by weight are adulterated and are uniformly mixed, wherein the proportion relation between each component of the additive is according to reality
It needs to be added；
B), it is maintained at a temperature of 240 DEG C, drying in 10 hours is carried out continuously to powder after mixing, with removal
Moisture in powder guarantees stringent composition proportion；
C), the powder after drying is put into molding die and is suppressed, generate ceramic green blanket.
S3), the composite graphite alkene layer on the ceramic green blanket of preparation, wherein graphene powder used corresponds to the Lanthanum Chromite
The parts by weight of powder and additive powder are 6 parts.
In this step, it is pre-stamped to be that the graphene powder that will prepare carries out for a kind of scheme, generates graphene green sheet, and
The ceramic green blanket prepared in step S2) is put into molding die, graphene blanket is then stacked on ceramic green blanket；Separately
A kind of scheme is that the ceramic green blanket is put into molding die, the then directly arrangement preparation on the ceramic green blanket
Graphene powder forms Graphene powder last layer.
S4), by a high temperature of the ceramic green blanket and 1200 DEG C of graphene layer, Thermocompressed sintering and forming.
In this step, the molding die equipped with ceramic green blanket and graphene layer is integrally placed in sintering furnace, example
It is such as placed in closed Medium frequency induction hot-pressed sintering furnace, side pressurization, side sintering, wherein the process of the pressurization is divided into multiple ranks
Duan Jinhang, for example, seven times or eight times pressurizations can be divided into as needed；Moulding pressure is released after pressurization a period of time, so as to
Workpiece discharge stress after, then row pressurization, in order to avoid made due to lasting pressurization the stress of workpiece to be added have little time release and
Workpiece to be added is caused to crack.
It in one embodiment, can be first by the powder after drying before the powder after drying carries out hot pressed sintering
End is granulated, and then the particle made is put into molding die again and carries out Thermocompressed sintering and forming.
Embodiment three:
S1), the powder of Lanthanum Chromite, graphene and additive is prepared respectively.
In this step, the various raw materials of high-purity, including Lanthanum Chromite, graphene and additive are chosen first, it is desirable that
Purity >=98% of various raw materials, preferably 99.80-99.99%, so as to strict control composition proportion；
Then, the various components of Lanthanum Chromite, graphene and additive are put into ball mill respectively, carry out continuous powder
It is broken, superfine powder is made.Preferably, the particle diameter of the superfine powder is 5-25 μm, more preferably 1-3 μm, be may make in this way
Manufactured ceramics quality is more uniform.
S2), ceramic green blanket is made in the powder of the Lanthanum Chromite of preparation and additive.
With reference to Fig. 2, in this step, and comprising the following specific steps
A), by the powder of the Lanthanum Chromite and additive that are prepared in step S1) according to 86 parts of lanthanum chromate powder, additive powder
0.9 part of parts by weight are adulterated and are uniformly mixed, wherein the proportion relation between each component of the additive is according to practical need
It is added；
B), it is maintained at a temperature of 250 DEG C, drying in 11 hours is carried out continuously to powder after mixing, with removal
Moisture in powder guarantees stringent composition proportion；
C), the powder after drying is put into molding die and is suppressed, generate ceramic green blanket.
S3), the composite graphite alkene layer on the ceramic green blanket of preparation, wherein graphene powder used corresponds to the Lanthanum Chromite
The parts by weight of powder and additive powder are 7 parts.
In this step, it is pre-stamped to be that the graphene powder that will prepare carries out for a kind of scheme, generates graphene green sheet, and
The ceramic green blanket prepared in step S2) is put into molding die, graphene blanket is then stacked on ceramic green blanket；Separately
A kind of scheme is that the ceramic green blanket is put into molding die, the then directly arrangement preparation on the ceramic green blanket
Graphene powder forms Graphene powder last layer.
S4), by a high temperature of the ceramic green blanket and 1300 DEG C of graphene layer, Thermocompressed sintering and forming.
In this step, the molding die equipped with ceramic green blanket and graphene layer is integrally placed in sintering furnace, example
It is such as placed in closed Medium frequency induction hot-pressed sintering furnace, side pressurization, side sintering, wherein the process of the pressurization is divided into multiple ranks
Duan Jinhang, for example, seven times or eight times pressurizations can be divided into as needed；Moulding pressure is released after pressurization a period of time, so as to
Workpiece discharge stress after, then row pressurization, in order to avoid made due to lasting pressurization the stress of workpiece to be added have little time release and
Workpiece to be added is caused to crack.
It in one embodiment, can be first by the powder after drying before the powder after drying carries out hot pressed sintering
End is granulated, and then the particle made is put into molding die again and carries out Thermocompressed sintering and forming.
Example IV:
S1), the powder of Lanthanum Chromite, graphene and additive is prepared respectively.
In this step, the various raw materials of high-purity, including Lanthanum Chromite, graphene and additive are chosen first, it is desirable that
Purity >=98% of various raw materials, preferably 99.80-99.99%, so as to strict control composition proportion；
Then, the various components of Lanthanum Chromite, graphene and additive are put into ball mill respectively, carry out continuous powder
It is broken, superfine powder is made.Preferably, the particle diameter of the superfine powder is 5-25 μm, more preferably 1-3 μm, be may make in this way
Manufactured ceramics quality is more uniform.
S2), ceramic green blanket is made in the powder of the Lanthanum Chromite of preparation and additive.
With reference to Fig. 2, in this step, and comprising the following specific steps
A), by the powder of the Lanthanum Chromite and additive that are prepared in step S1) according to 87 parts of lanthanum chromate powder, additive powder
1 part of parts by weight are adulterated and are uniformly mixed, wherein the proportion relation between each component of the additive is according to actual needs
It is added；
B), it is maintained at a temperature of 270 DEG C, drying in 12 hours is carried out continuously to powder after mixing, with removal
Moisture in powder guarantees stringent composition proportion；
C), the powder after drying is put into molding die and is suppressed, generate ceramic green blanket.
S3), the composite graphite alkene layer on the ceramic green blanket of preparation, wherein graphene powder used corresponds to the Lanthanum Chromite
The parts by weight of powder and additive powder are 7 parts.
In this step, it is pre-stamped to be that the graphene powder that will prepare carries out for a kind of scheme, generates graphene green sheet, and
The ceramic green blanket prepared in step S2) is put into molding die, graphene blanket is then stacked on ceramic green blanket；Separately
A kind of scheme is that the ceramic green blanket is put into molding die, the then directly arrangement preparation on the ceramic green blanket
Graphene powder forms Graphene powder last layer.
S4), by a high temperature of the ceramic green blanket and 1400 DEG C of graphene layer, Thermocompressed sintering and forming.
In this step, the molding die equipped with ceramic green blanket and graphene layer is integrally placed in sintering furnace, example
It is such as placed in closed Medium frequency induction hot-pressed sintering furnace, side pressurization, side sintering, wherein the process of the pressurization is divided into multiple ranks
Duan Jinhang, for example, seven times or eight times pressurizations can be divided into as needed；Moulding pressure is released after pressurization a period of time, so as to
Workpiece discharge stress after, then row pressurization, in order to avoid made due to lasting pressurization the stress of workpiece to be added have little time release and
Workpiece to be added is caused to crack.
It in one embodiment, can be first by the powder after drying before the powder after drying carries out hot pressed sintering
End is granulated, and then the particle made is put into molding die again and carries out Thermocompressed sintering and forming.
In the above embodiments one into example IV, the additive includes Determination of multiple metal elements, for example, strontium, barium, titanium,
Two kinds at least in yttrium, cerium and scandium.The Determination of multiple metal elements exists in the form of each autoxidisable substance, such as strontium oxide strontia,
Barium monoxide, titanium dioxide, yttrium oxide, ceria and scandium oxide.The additive can increase the high temperature of ceramics
Thermal stability and electric conductivity, while can also play the role of refining crystal grain.
The ceramics prepared using above-mentioned ceramic preparation, porosity are can be controlled within 20%.The ceramics are homogeneous,
It is not easy to crack, and there is preferable high temperature resistance and electric conductivity, or even can make under conditions of up to 1400 degrees Celsius
With；On the other hand, broken using the ceramic intensity with higher of ceramic preparation preparation and good warping resistance with anti-
Fragility energy is able to bear certain load.In consideration of it, can be used for making special process equipment using the ceramic preparation process of this kind,
Such as making the bottom plate of basalt bushing, to substitute bottom plate made of traditional platinum-rhodium alloy, guaranteeing well to make
While with performance, production cost is greatly reduced.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Finally, it should be noted that obviously, the above embodiment is merely an example for clearly illustrating the present invention, and simultaneously
The non-restriction to embodiment.For those of ordinary skill in the art, it can also do on the basis of the above description
Other various forms of variations or variation out.There is no necessity and possibility to exhaust all the enbodiments.And thus drawn
The obvious changes or variations that Shen goes out are still in the protection scope of this invention.
Claims (11)
1. a kind of ceramic preparation, which comprises the following steps:
The powder of Lanthanum Chromite, graphene and additive is prepared respectively；
Ceramic green blanket is made in the powder of the Lanthanum Chromite of preparation and additive；
The composite graphite alkene layer on the ceramic green blanket of preparation；
By the ceramic green blanket and graphene layer Thermocompressed sintering and forming,
The additive includes Determination of multiple metal elements, the metallic element include in strontium, barium, titanium, yttrium, cerium and scandium at least within
Two kinds, the Determination of multiple metal elements exists in the form of each autoxidisable substance,
Wherein, include by the step that the powder of the Lanthanum Chromite of preparation, graphene and additive is uniformly mixed according to a certain percentage,
During preparing ceramic green blanket and composite graphite alkene layer, the Lanthanum Chromite, additive and graphene powder
It is added according to 84-87 parts of lanthanum chromate powder, additive 0.5-1 and 5-7 parts of graphene powder of parts by weight.
2. ceramic preparation according to claim 1, which is characterized in that preparation ceramic green blanket the following steps are included:
The powder of the Lanthanum Chromite of preparation and additive is uniformly mixed according to a certain percentage；
Powder after mixing is dried；
Powder after drying is subjected to compacting and generates ceramic green blanket.
3. ceramic preparation according to claim 1, which is characterized in that the composite graphite on the ceramic green blanket of preparation
The step of alkene layer include:
The graphene powder compacting of preparation is generated into graphene green sheet, or arranges the stone of preparation on the ceramic green blanket
Black alkene powder.
4. ceramic preparation according to claim 1, which is characterized in that prepare Lanthanum Chromite, graphene respectively and add
The step of powder of charging includes:
The various components of Lanthanum Chromite, graphene and additive are put into ball mill respectively, are continuously crushed, are made ultra-fine
Powder.
5. ceramic preparation according to claim 4, which is characterized in that the particle diameter of the superfine powder is 1-3 μm.
6. ceramic preparation according to claim 1, which is characterized in that dry powder after mixing
Step includes:
It is maintained at a temperature of 230 DEG C -270 DEG C, drying in 8-12 hours is carried out continuously to powder after mixing.
7. ceramic preparation according to claim 1, which is characterized in that the powder after drying is carried out hot pressed sintering
Step includes:
Powder after drying is put into molding die, side pressurization, side sintering, wherein the process of the pressurization is divided into multiple stages
It carries out, releases moulding pressure after a period of time of pressurizeing, so that after workpiece to be added release stress, then row pressurization.
8. ceramic preparation according to claim 7, which is characterized in that the sintering temperature of the powder is 1100-
1400℃。
9. ceramic preparation according to claim 1, which is characterized in that the Lanthanum Chromite, graphene and additive
Purity is 99.80-99.99%.
10. a kind of ceramics, which is characterized in that the ceramics use the described in any item ceramic preparation systems of claim 1-9
At.
11. a kind of basalt bushing, which is characterized in that the bottom plate of the basalt bushing uses claim 1-9
Described in any item ceramic preparations are made.
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| US9205571B2 (en) * | 2012-04-18 | 2015-12-08 | Nitto Denko Corporation | Method and apparatus for sintering flat ceramics |
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Effective date of registration: 20171120 Address after: No. 618, three section of Jackie Chan Avenue, Chengdu economic and Technological Development Zone, Sichuan Province Applicant after: Sichuan Aerospace Tuoxin Basalt Industrial Co., Ltd. Address before: 518000 room 324, Nanshan District Science Park Comprehensive Service building, Shenzhen, Guangdong Applicant before: Cao Baiqing Applicant before: Yang Meng |
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