CN104108934B - A kind of pucherite function ceramics and preparation method thereof - Google Patents
A kind of pucherite function ceramics and preparation method thereof Download PDFInfo
- Publication number
- CN104108934B CN104108934B CN201410346998.0A CN201410346998A CN104108934B CN 104108934 B CN104108934 B CN 104108934B CN 201410346998 A CN201410346998 A CN 201410346998A CN 104108934 B CN104108934 B CN 104108934B
- Authority
- CN
- China
- Prior art keywords
- pucherite
- function ceramics
- preparation
- rate
- fire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
A kind of pucherite function ceramics and preparation method thereof, the chemical composition of pucherite function ceramics is BiVO
4, density more than 97%, specific inductivity is 60, dielectric loss & lt; 0.005.The preparation method of described pucherite function ceramics is, with Bi
2o
3and V
2o
5powder is raw material, once fire putting into airtight mould after raw material mixed pressuring plate, fire rear grinds and compressing tablet again, again put into airtight mould afterwards to carry out secondary and fire, fire control cooling rate after terminating and be not more than 3.3 DEG C/min, after being down to room temperature, namely obtain pucherite function ceramics.
Description
Technical field
The invention belongs to ceramic material field, be specifically related to a kind of pucherite function ceramics and preparation method thereof.
Background technology
Functional materials is the core of field of new, plays important promotion and supporting role to the development of new and high technology.In global field of new, functional materials accounts for 85%.Ceramic material is the important component part of functional materials, has the characteristic of many excellences, is subject to the great attention of scientific and technological circle and business circles.
Pucherite (be called for short 184 yellow) is a kind of important Inorganic yellow pigment, has the characteristics such as nontoxic, bright color, stable chemical nature.Pucherite as the narrower semiconductor material of a kind of band gap (
e g=2.4eV), having good product oxygen activity under visible light illumination, is a kind of novel photocatalyst.At present, pucherite is more and more extensive in the application of pigment and photocatalysis field.
According to document, utilize high temperature solid phase synthesis, chemical bath deposition method, sol-gel method, hydrothermal method, the precipitator method etc., pucherite powder can be prepared; Utilize crystal pulling method, can pucherite monocrystal be prepared.But, in document, lack the report about pucherite pottery up to now.This is because pucherite fusing point lower (~ 940 DEG C), highly volatile in sintering procedure, makes the product burnt till be vesicular structure.Utilize solid reaction process, very difficultly sinter out fine and close solid pucherite pottery, thus make pucherite become blank in function ceramics research field.In view of pucherite is a kind of important semiconductor material, in the widespread use of photochemical catalysis and pigment art, there is the physical propertys such as ionic conductivity, ferroelasticity, photochromic, be necessary to develop a kind of preparation method, prepare the pucherite pottery of excellent property, develop its distinctive functional attributes.
Summary of the invention
Technical problem to be solved by this invention overcomes the problem that pucherite is difficult to sinter into porcelain, provides a kind of pucherite function ceramics and preparation method thereof.
The present invention for solving the problems of the technologies described above adopted technical scheme is: a kind of pucherite function ceramics, and its chemical composition is BiVO
4, density more than 97%, specific inductivity is 60, dielectric loss <0.005.
The preparation method of described pucherite function ceramics is, with Bi
2o
3and V
2o
5powder is raw material, once fire putting into airtight mould after raw material mixed pressuring plate, fire rear grinds and compressing tablet again, again put into airtight mould afterwards to carry out secondary and fire, fire control cooling rate after terminating and be not more than 3.3 DEG C/min, after being down to room temperature, namely obtain pucherite function ceramics.
The described method once fired is: be directly warming up to 890 DEG C of pre-burnings 12 hours.
Heating curve in described secondary sintering procedure is: first rise to 500 DEG C with the temperature rise rate of 2 DEG C/min by room temperature, keep after 2 hours, be warming up to 890 DEG C, keep 12 hours more afterwards with the temperature rise rate of 3.25 DEG C/min.
Temperature lowering curve in described secondary sintering procedure is: be down to 800 DEG C with the rate of temperature fall of 1.5 DEG C/min by 890 DEG C, 700 DEG C are down to again with the rate of temperature fall of 1.7 DEG C/min, 550 DEG C are down to afterwards with the rate of temperature fall of 2.5 DEG C/min, be down to 350 DEG C with the rate of temperature fall of 3.3 DEG C/min again, finally naturally cool to room temperature.
Described airtight mould is quartz molds, and the size of mould and tightness thereof ensure that pressure inner in sintering procedure can stop the composition in raw material to volatilize.
Through once firing and after grinds, carrying out compressing tablet with oil press under the pressure of 6Mpa, be pressed into diameter 15mm, the base substrate of thickness 2mm.
The invention has the beneficial effects as follows:
1, when firing, compressing tablet being placed in airtight mould, making around compressing tablet, to form higher vapour pressure, effectively can suppress the volatilization of composition, thus avoid the formation of vesicular structure, make to fire through secondary the pucherite pottery made and there is higher density.
2, the product in order to avoid causing because cooling rate is too fast after firing end shrinks too fast and ununiform shrinkage, cooling rate is limited to not higher than 3.3 DEG C/min, can prevent product from cooling contraction process, occurring hole thus, ensure the high-compactness of product further.
3, by the control to the processing condition such as firing temperature, time and parameter, ensured that raw material is to the transformation efficiency of pucherite pottery and production efficiency, makes the final product supported be the pure monoclinic phase pucherite existed without other dephasigns.
4, the pucherite ceramic dense degree prepared by described method can reach more than 97%, specific inductivity is about 60, dielectric loss is less than 0.005, and this pottery has the physical propertys such as ionic conductivity, ferroelasticity, photochromic, is a kind of potential high dielectric function stupalith.
Accompanying drawing explanation
Fig. 1 is preparation technology's schema of pucherite pottery of the present invention;
Fig. 2 is the sample photo of pucherite pottery of the present invention;
Fig. 3 is the XRD figure of pucherite pottery of the present invention.
Embodiment
A kind of pucherite function ceramics, its chemical composition is BiVO
4, density more than 97%, specific inductivity is 60, dielectric loss <0.005.This pottery has the physical propertys such as ionic conductivity, ferroelasticity, photochromic, and has good dielectric properties, is a kind of desirable functional materials.
The preparation method of described pucherite function ceramics is, with Bi
2o
3and V
2o
5powder is raw material, by Bi
2o
3and V
2o
5powder is according to after the molar ratio ingredient of 1:1, and mixing loaded grinding plant, with underhand polish 5 hours, be solvent with dehydrated alcohol when grinding, can keep uniform particles, be also unlikely to produce powder airborne dust, added dehydrated alcohol amount is about 5% of joined powder quality.Ensure to volatilize after ground complete, can not remain in powder.By compressing tablet after ground powder drying; Compressing tablet is put into quartz molds, and by quartz molds sealing with the volatilization suppressing composition, the size of mould and tightness thereof ensure that pressure inner in sintering procedure can stop the composition in raw material to volatilize.In order to avoid composition volatilization in follow-up sintering procedure as far as possible, after loading compressing tablet in quartz molds, remaining space is the smaller the better, and the volume size of quartz molds is advisable can just load compressing tablet; Quartz molds after sealing is put into retort furnace once fire, firing temperature is preferably 890 DEG C, and the firing time is 12 hours.Fired rear grinds and compressing tablet again, tablet forming technique can be adopted with the following method: after grinds, carries out compressing tablet with oil press under the pressure of 6Mpa, is pressed into diameter 15mm, the base substrate of thickness 2mm.The quartz molds again putting into sealing after compressing tablet is carried out secondary and is fired, the top temperature fired of secondary with once fire identical.890 DEG C of sintering 12-14 hours can be directly warming up to according to usual method, but preferably carry out according to following heating curve, heating curve is: first rise to 500 DEG C with the temperature rise rate of 2 DEG C/min by room temperature, keep after 2 hours, be warming up to 890 DEG C with the temperature rise rate of 3.25 DEG C/min, keep 12 hours more afterwards.Adopt this speed to heat up gradually, while products quality guarantee, also can at utmost save the consumed energy.Will lower the temperature after firing end, cooling rate is not easily too fast, and excessive velocities can cause hole to produce to a certain extent.Therefore, cooling rate to be controlled after firing end and be not more than 3.3 DEG C/min.Preferably carry out according to following temperature lowering curve, temperature lowering curve is: be down to 800 DEG C with the rate of temperature fall of 1.5 DEG C/min by 890 DEG C, 700 DEG C are down to again with the rate of temperature fall of 1.7 DEG C/min, 550 DEG C are down to afterwards with the rate of temperature fall of 2.5 DEG C/min, be down to 350 DEG C with the rate of temperature fall of 3.3 DEG C/min again, finally naturally cool to room temperature.
After testing, the pucherite ceramic dense degree more than 97% obtained.Shown in accompanying drawing 3, it is pucherite pottery XRD figure prepared by the present embodiment.Contrast with standard P DF card (No.75-1866), can determine that the present embodiment gained pottery is pure monoclinic phase pucherite, exist without other dephasigns.Under room temperature and 1MHz test condition, impedance analysis result shows, and pucherite ceramic dielectric constant prepared by the present embodiment is about 60, and dielectric loss is less than 0.005, is a kind of potential high dielectric ceramic material.
Claims (6)
1. a pucherite function ceramics, is characterized in that: its chemical composition is BiVO
4, density more than 97%, specific inductivity is 60, dielectric loss <0.005; With Bi
2o
3and V
2o
5powder is raw material, once fire putting into airtight mould after raw material mixed pressuring plate, fire rear grinds and compressing tablet again, again put into airtight mould afterwards to carry out secondary and fire, fire control cooling rate after terminating and be not more than 3.3 DEG C/min, after being down to room temperature, namely obtain pucherite function ceramics.
2. the preparation method of a kind of pucherite function ceramics as claimed in claim 1, is characterized in that: the described method once fired is: be directly warming up to 890 DEG C of pre-burnings 12 hours.
3. the preparation method of a kind of pucherite function ceramics as claimed in claim 1, it is characterized in that: the heating curve in described secondary sintering procedure is: first rise to 500 DEG C with the temperature rise rate of 2 DEG C/min by room temperature, keep after 2 hours, be warming up to 890 DEG C with the temperature rise rate of 3.25 DEG C/min, keep 12 hours more afterwards.
4. the preparation method of a kind of pucherite function ceramics as claimed in claim 1, it is characterized in that: the temperature lowering curve in described secondary sintering procedure is: be down to 800 DEG C with the rate of temperature fall of 1.5 DEG C/min by 890 DEG C, 700 DEG C are down to again with the rate of temperature fall of 1.7 DEG C/min, 550 DEG C are down to afterwards with the rate of temperature fall of 2.5 DEG C/min, be down to 350 DEG C with the rate of temperature fall of 3.3 DEG C/min again, finally naturally cool to room temperature.
5. the preparation method of a kind of pucherite function ceramics as claimed in claim 1, is characterized in that: described airtight mould is quartz molds, and the size of mould and tightness thereof ensure that pressure inner in sintering procedure can stop the composition in raw material to volatilize.
6. the preparation method of a kind of pucherite function ceramics as claimed in claim 1, is characterized in that: through once firing and after grinds, carrying out compressing tablet, be pressed into diameter 15mm, the base substrate of thickness 2mm with oil press under the pressure of 6Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410346998.0A CN104108934B (en) | 2014-07-21 | 2014-07-21 | A kind of pucherite function ceramics and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410346998.0A CN104108934B (en) | 2014-07-21 | 2014-07-21 | A kind of pucherite function ceramics and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104108934A CN104108934A (en) | 2014-10-22 |
| CN104108934B true CN104108934B (en) | 2015-11-18 |
Family
ID=51705947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410346998.0A Active CN104108934B (en) | 2014-07-21 | 2014-07-21 | A kind of pucherite function ceramics and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104108934B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108623311B (en) * | 2018-07-05 | 2020-08-25 | 何莉 | Functional ceramic apparatus for producing |
| CN115259224A (en) * | 2022-08-10 | 2022-11-01 | 淮北师范大学 | Monoclinic scheelite-phase bismuth vanadate nano material and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1669059A1 (en) * | 2004-12-13 | 2006-06-14 | Mitsubishi Gas Chemical Company, Inc. | Photocatalytic bleaching agent for teeth based on bismuth vanadate and bleaching method |
| CN103896577A (en) * | 2014-03-10 | 2014-07-02 | 西安工业大学 | Vanadium-based temperature stable type low temperature sintered LTCC microwave ceramic dielectric material as well as preparation method and application thereof |
-
2014
- 2014-07-21 CN CN201410346998.0A patent/CN104108934B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1669059A1 (en) * | 2004-12-13 | 2006-06-14 | Mitsubishi Gas Chemical Company, Inc. | Photocatalytic bleaching agent for teeth based on bismuth vanadate and bleaching method |
| CN103896577A (en) * | 2014-03-10 | 2014-07-02 | 西安工业大学 | Vanadium-based temperature stable type low temperature sintered LTCC microwave ceramic dielectric material as well as preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104108934A (en) | 2014-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104446468B (en) | A kind of X9R type ceramic capacitor dielectric material and preparation method thereof | |
| CN113968732B (en) | Preparation method of high-stability low-loss microwave dielectric ceramic material and microwave dielectric ceramic material prepared by applying same | |
| CN102311266A (en) | Preparation method of (K05Na05) NbO3 (KNN) lead-free piezoelectric ceramic material | |
| CN103896579B (en) | A kind of low temperature sintering lithium-base microwave dielectric ceramic material and preparation method thereof | |
| CN102115330A (en) | Preparation method of solid phase sintering silicon carbide ceramics taking phenolic resin as carbon source | |
| CN104108934B (en) | A kind of pucherite function ceramics and preparation method thereof | |
| CN104108933B (en) | A kind of preparation method of high-compactness pucherite pottery | |
| CN107814561A (en) | A kind of method for preparing high-density oxide ceramic target | |
| CN111004030B (en) | MgTiO (magnesium-titanium-oxide) powder3Microwave-based dielectric ceramic and preparation method thereof | |
| CN104987070A (en) | Temperature stable microwave dielectric ceramic with medium dielectric constant and preparation method of temperature stable microwave dielectric ceramic | |
| CN103922725B (en) | A kind of low-temperature sintering temperature-stabilized microwave medium ceramic material and preparation method thereof | |
| CN103951414B (en) | There is the manufacture method of the huge specific inductivity of low-dielectric loss and pressure-sensitive character stupalith | |
| CN104817322B (en) | A kind of temperature-stable capacitor ceramic material Sr4euTiNb9o30and preparation method thereof | |
| CN102786304A (en) | Preparation method for hot-pressed boron carbide ceramic | |
| CN110885243A (en) | Low-dielectric-constant aluminate microwave dielectric ceramic material and preparation method thereof | |
| CN107285760B (en) | Preparation method of low-loss giant dielectric constant ceramic material | |
| CN104016708B (en) | A kind of preparation method of high breaking strength earthenware supporter | |
| CN103922733A (en) | Preparation method of low-temperature sintering high-tunability barium strontium titanate ceramic | |
| CN104817323B (en) | Temperature-stable ceramic capacitor dielectric material Sr4gdTiNb9o30and preparation method thereof | |
| CN103864420B (en) | A kind of preparation method of microwave dielectric ceramic materials | |
| CN104987071A (en) | Low-temperature sintered microwave dielectric ceramic material with middle permittivity | |
| CN111925207A (en) | Mg3B2O6-Ba3(VO4)2Composite ceramic material and preparation method thereof | |
| CN109369163B (en) | Preparation method of large solid quartz ceramic material | |
| CN104108932B (en) | A kind of method preparing pucherite function ceramics and prepared pucherite function ceramics | |
| CN103693946B (en) | High-thermal conductivity TiO2-containing microwave attenuating ceramic and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200107 Address after: 430000 Wuhan East Lake Development Zone, Hubei science and Technology Park, Wuhan University Patentee after: Wuhan Zhengke Technology Co., Ltd Address before: 471000 Xiyuan Road, Jianxi District, Henan, No. 48, No. Patentee before: Henan University of Science and Technology |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200828 Address after: Xianjiang Street Xueyuan Road, Jinping District, Shantou City, Guangdong Province Patentee after: Guangdong Laboratory of chemistry and fine chemicals Address before: 430000 Wuhan East Lake Development Zone, Hubei science and Technology Park, Wuhan University Patentee before: Wuhan Zhengke Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |