CN109503163A - One kind having ultrahigh Q-value tantalic acid magnesium media ceramic and preparation method thereof - Google Patents
One kind having ultrahigh Q-value tantalic acid magnesium media ceramic and preparation method thereof Download PDFInfo
- Publication number
- CN109503163A CN109503163A CN201811563982.XA CN201811563982A CN109503163A CN 109503163 A CN109503163 A CN 109503163A CN 201811563982 A CN201811563982 A CN 201811563982A CN 109503163 A CN109503163 A CN 109503163A
- Authority
- CN
- China
- Prior art keywords
- oxide
- preparation
- acid magnesium
- powder
- tantalic acid
- 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.)
- Pending
Links
Classifications
-
- 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
- C04B35/495—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 vanadium, niobium, tantalum, molybdenum or tungsten oxides or solid solutions thereof with other oxides, e.g. vanadates, niobates, tantalates, molybdates or tungstates
-
- 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
-
- 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
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- 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
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
-
- 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
- C04B2235/3258—Tungsten oxides, tungstates, or oxide-forming salts thereof
-
- 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
- C04B2235/3262—Manganese oxides, manganates, rhenium oxides or oxide-forming salts thereof, e.g. MnO
- C04B2235/3267—MnO2
-
- 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
- C04B2235/3284—Zinc oxides, zincates, cadmium oxides, cadmiates, mercury oxides, mercurates or oxide forming salts thereof
-
- 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
- C04B2235/3286—Gallium oxides, gallates, indium oxides, indates, thallium oxides, thallates or oxide forming salts thereof, e.g. zinc gallate
-
- 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
- C04B2235/3293—Tin oxides, stannates or oxide forming salts thereof, e.g. indium tin oxide [ITO]
-
- 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
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3409—Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
Abstract
The present invention relates to one kind to have ultrahigh Q-value tantalic acid magnesium media ceramic and preparation method thereof, and the chemical composition of the tantalic acid magnesium media ceramic is MgTa2O6- x mol% A, wherein A is at least one of the oxide of B, the oxide of Zn, the oxide of Mg, the oxide of Ga, the oxide of W, the oxide of Sn, the oxide of Zr, the oxide of Al and oxide of Mn, 0 < x < 2.
Description
Technical field
The microwave dielectric material of ultrahigh Q-value and preparation method thereof that the present invention relates to a kind of applied to microwave communication, belongs to
Function ceramics field.
Background technique
Microwave-medium ceramics (Microwave Dielectric Ceramics, abbreviation MWDC) refer to applied to Microwave Frequency
As dielectric material and the ceramics of one or more functions are completed in section (mainly uhf band, SHF frequency range) circuit.20th century
Later period, with the fast development of wireless Internet, wideband backbone network and global position system GPS, as microwave filter, resonance
The high performance microwave media ceramic of the wireless communications devices such as device and oscillator has become the coke of international academic community extensive concern
Point material.
With mobile 5G communication and satellite communication technology to development, communication frequency is gradually increased, bandwidth increases, traditional
The devices such as cavity body filter have been unable to meet the performance requirement of microwave telecommunication devices, and the development of microwave dielectric properties is to dielectric material
More stringent requirements are proposed --- high Q value and nearly zero temperature coefficient of resonance frequency.However, in existing microwave-medium ceramics
In, most of ceramics need to reach above-mentioned requirements by certain Material composition design it is impossible to meet above-mentioned requirements.Most often
It is by the opposite two media ceramics of temperature coefficient of resonance frequency according to certain change with generally also most effective design method
Metering ratio is learned to be mixed and be sintered, therefore, the two media pottery that the Q value being typically chosen is high, temperature coefficient of resonance frequency is opposite
Porcelain achieves the goal.But in existing report, high q-factor microwave-medium ceramics generally have negative temperature coefficient of resonance frequency,
For example Al2O3、Mg4Ta2O9, ZnAl2O4..., need the positive temperature coefficient of resonance frequency of suitable high q-factor meet mixing require,
The ceramic systems of existing composite demand concentrate on TiO2、CaTiO3、SrTiO3In, these ceramics Q values are relatively low, are not able to satisfy substantially
The following high q-factor ceramics demand.Reported literature points out MgTa2O6Media ceramic has excellent microwave dielectric property, and its resonance
Frequency-temperature coefficient is positive value, is expected to meet application demand；But the material system haves the characteristics that sintering character is poor, mainly
The reason is that since there are micro Ta in the MT powder of preparation2O5, mutually there is phase transformation in this, cause material fine and close during the sintering process
It is difficult.
Summary of the invention
In view of the above-mentioned problems, the object of the present invention is to provide a kind of ultrahigh Q-value that dielectric properties are stable and positive frequencys
Tantalic acid magnesium media ceramic of temperature coefficient and preparation method thereof.
On the one hand, the present invention provides a kind of tantalic acid magnesium media ceramic with ultrahigh Q-value, the tantalic acid magnesium media ceramic
Chemical composition be MgTa2O6- x mol%A, wherein A be the oxide of B, the oxide of Zn, Mg oxide, Ga oxidation
At least one of object, the oxide of W, the oxide of Sn, the oxide of Zr, the oxide of Al and oxide of Mn, 0 < x <
2。
Preferably, the dielectric constant of the tantalic acid magnesium media ceramic is 26~28, and superelevation Qf > 150000GHz, resonance frequency
Rate temperature coefficient is at 50~60ppm/ DEG C.
On the other hand, the present invention provides a kind of preparations of tantalic acid magnesium media ceramic with ultrahigh Q-value as described above
Method, comprising:
By MgO, Ta2O5With the source A according to chemical composition MgTa2O6- x mol%A is weighed and is mixed, and obtains material powder；
Gained material powder is not less than 8 hours in 1000~1250 DEG C of calcinings, synthesizes MT powder；
By gained MT powder through granulation, molding and sintering, the tantalic acid magnesium media ceramic with ultrahigh Q-value is obtained.
Due to there is a small amount of residual Ta in MT powder synthesis process2O5The phenomenon that phase, hinders ceramic densifying.For this purpose, this
Application is by the way that by a small amount of source A, (oxycompound containing at least one of B, Zn, Mg, Ga, W, Sn, Zr, Al, Mn element divides
Solution product is containing the compound for limiting oxide) directly it is added when MT powder synthesizes, a small amount of source A is required to and Ta2O5Hair
Raw reaction is dissolved into MT lattice structure, and playing can significantly inhibit or reduce in MT powder since solid phase reaction is not thorough
Bottom and remaining micro Ta2O5, promote ceramic densifying.
Preferably, the purity of the MgO is greater than 99%, the Ta2O5Purity be greater than 99%
Preferably, the source A be the oxide of B, the oxide of Zn, the oxide of Mg, the oxide of Ga, W oxide,
The oxide of Sn, the oxide of Zr, at least one of the oxide of the oxide of Al and Mn or/and high-temperature decomposition product be containing
The compound of at least one above-mentioned restriction oxide (A).
Preferably, the D of the MT powder502 μm of <.
Preferably, binder used in the granulation be polyvinyl alcohol, polyvinyl formal, in carboxymethyl cellulose extremely
Few one kind.
Also, preferably, the quality of the binder is 1~3wt% of material powder.
Preferably, the sintering is after being sintered 4~12 hours at 1500~1600 DEG C in Mg atmosphere, with 1~2 DEG C/
Minute cooling rate is down to 1000~1200 DEG C, then cools to room temperature with the furnace.Due to MT powder sintering temperature it is high (about 1500~
1600 DEG C), at a temperature of this Mg volatilization it is more serious, by the sintering process in Mg atmosphere at 1500~1600 DEG C sintering 4~
After 12 hours, 1000~1200 DEG C are down to 1~2 DEG C/min of cooling rate, then cooling to room temperature availability with the furnace can be best
Ceramics.
Also, preferably, being warming up to 1500~1600 DEG C with 5~10 DEG C/min of heating rate.
The present invention controls Ta in MT powder by the way that the source A is added2O5Content, to prepare compactness good MT pottery
Porcelain.
Detailed description of the invention
Fig. 1 is to add the source A after the addition source A (element is B, Mg in selection A), powder synthesis when being not added with the source A, powder synthesis
The object phase composition of the tantalic acid magnesium media ceramic of (choosing element in A is B, Mg).
Specific embodiment
The present invention is further illustrated below by way of following embodiments, it should be appreciated that following embodiments are merely to illustrate this
Invention, is not intended to limit the present invention.
In the present invention, the chemical composition of the tantalic acid magnesium media ceramic with ultrahigh Q-value can be MgTa2O6- x mol%A,
Middle component A is mainly the oxide containing one or more of B, Zn, Mg, Ga, W, Sn, Zr, Al, Mn element, the value model of x
It encloses for 0 < x < 2.Wherein, MgTa2O6The dielectric constant of media ceramic (tantalic acid magnesium media ceramic) can be 26~28, superelevation Qf >
150000GHz, temperature coefficient of resonance frequency are 50~60ppm/ DEG C.
In one embodiment of the present invention, the tantalic acid magnesium media ceramic with ultrahigh Q-value is to utilize a kind of special process
The MgTa of method preparation2O6Powder sintering forms.Illustrate to following exemplary the system of the tantalic acid magnesium media ceramic with ultrahigh Q-value
Preparation Method.
By MgO, Ta2O5With the source A according to chemical composition MgTa2O6- x mol%A is weighed and is mixed, and obtains material powder.Its
In, the purity of MgO is greater than 99%, Ta2O5Purity be greater than 99%.Wherein the additive amount of A and MgO molar ratio are xmol%, wherein
0 < x < 2.When the source A, additional amount is excessive, it will generates new low Qf value ceramic phase, influences the performance of tantalic acid magnesium ceramics.
Material powder is not less than 8 hours in 1000~1250 DEG C of calcinings, synthesizes MT powder (MgTa2O6- x mol%A powder
Body).Gained MT powder is crushed, its particle size after cracking D is controlled502 μm of <.
The example that MT powder is prepared as one, by high-purity (> 99%) MgO, Ta2O5And the source A is according to chemical formula
MgTa2O6- x mol%A is weighed, and is then placed in the nylon tank for being previously added zirconium ball, and deionized water is added and carries out wet-milling, material: water
=1:2 is placed in drying in 130 DEG C of baking ovens, is put into alumina crucible and is calcined after powder drying, forged after mixing
Burning temperature is 1000~1250 DEG C, and preferably 1100 DEG C, calcination time is not less than 8h, synthesizes MgTa2O6- x mol%A (is denoted as MT)
Powder.
By MT powder through granulation, molding and sintering, the tantalic acid magnesium media ceramic with ultrahigh Q-value is obtained.Wherein make
Binder used in grain can in polyvinyl alcohol (PVA), polyvinyl formal (PVB) or carboxymethyl cellulose (CMC) at least
One kind, preferably PVA.The molding mode can be dry-pressing formed etc..The system of the sintering includes: first by 5~10 DEG C/min
1500~1600 DEG C (preferably 1550 DEG C) 4~12h of heat preservation are warming up to, then are down to 1000~1200 DEG C by 1~2 DEG C/min, and protect
Hold the tantalic acid magnesium media ceramic under the sintering schedule of Mg atmosphere, obtaining having ultrahigh Q-value in sintering furnace.
Enumerate embodiment further below with the present invention will be described in detail.It will similarly be understood that following embodiment is served only for this
Invention is further described, and should not be understood as limiting the scope of the invention, those skilled in the art is according to this hair
Some nonessential modifications and adaptations that bright above content is made all belong to the scope of protection of the present invention.Following examples are specific
Technological parameter etc. is also only an example in OK range, i.e. those skilled in the art can be done properly by the explanation of this paper
In the range of select, and do not really want to be defined in hereafter exemplary specific value.
Embodiment 1
(1) MgO and Ta that purity is greater than 99% are accurately weighed2O5Each 0.1mol, then weigh the source 0.001mol or 0.002mol A
(source A is respectively H3BO3、ZnO、MgO、GaO3/2(Ga2O3)、WO3、SnO2、ZrO2、AlO3/2(Al2O3)、MnO2One of), add
Enter in the nylon tank of addition zirconia ball in advance, pour into deionized water, weight ratio is material: water=1:2；After ball milling, put
Enter baking oven, dries 8h at a temperature of 130 DEG C.The powder of drying is fitted into corundum sagger, after calcining 8~12h at 1100 DEG C,
MT powder is made；
(2) the MT powder of calcining is added in the nylon tank of addition zirconia ball in advance, deionized water is added and is crushed, expects:
Water=1:1, as 2 μm of particle size after cracking D50 <, taking-up is dried at 130 DEG C；Select polyvinyl alcohol (PVA) water of 3% mass fraction
Solution is granulated powder；It is pressed into diameter 6mm after granulation, is highly the small column of 4mm, is put in the horse for being pre-placed MgO
Not in furnace, 1500~1550 DEG C are warming up to by 5 DEG C/min, keeps the temperature 6h, then be down to 1000 DEG C by 1 DEG C/min, subsequent furnace cooling
To room temperature, microwave dielectric material is made, performance is shown in Table 1.
1 embodiment of table, 1 properties of sample list
(note: it is GaO that the source A is added in above-mentioned example3/2、AlO3/2、H3BO3Molar content calculate, then the Ga being added2O3、
Al2O3、B2O3Content be respectively 0.0005mol and 0.001mol).
Embodiment 2
H (is chosen into the source A in embodiment 13BO3、ZnO、SnO2、AlO3/2, MgO is as representing) addition in MT powder prepared it
It (is namely added afterwards in sintering stage), for remaining step with embodiment 1, performance is shown in Table 2.
Table 2 is properties of sample list prepared by embodiment 2:
Fig. 1 gives the source A that is not added with, in MgTa2O6Powder synthesize when addition the source A (choose A in element be B, Mg, i.e.,
1mol%H3BO3And 1mol%MgO) and in MgTa2O6Powder synthesis after add again the source A (choose A in element be B, Mg, i.e.,
1mol%H3BO3And 1mol%MgO), the MgTa being sintered out2O6The composition of ceramics, it can be seen that the source A addition before powder synthesizes
Obvious inhibition can be played or eliminate Ta2O5Phase, this high-performance MgTa fine and close to preparation2O6Media ceramic has important
Directive significance.It is added, does not play bright if can also be seen that for additive to be placed on after MT powder synthesizes by Fig. 1, Tables 1 and 2
Aobvious inhibition Ta2O5The effect of crystal transition, ceramics are still fine and close difficult.
Claims (10)
1. a kind of tantalic acid magnesium media ceramic with ultrahigh Q-value, which is characterized in that the chemical composition of the tantalic acid magnesium media ceramic
For MgTa2O6- x mol% A, wherein A is the oxidation of the oxide of B, the oxide of Zn, the oxide of Mg, the oxide of Ga, W
At least one of object, the oxide of Sn, the oxide of Zr, the oxide of Al and oxide of Mn, 0 < x < 2.
2. the tantalic acid magnesium media ceramic according to claim 1 with ultrahigh Q-value, which is characterized in that the tantalic acid magnesium is situated between
The dielectric constant of matter ceramics is 26~28, superelevation Qf > 150000GHz, and temperature coefficient of resonance frequency is 50~60 ppm/ DEG C.
3. a kind of preparation method of the tantalic acid magnesium media ceramic with ultrahigh Q-value as claimed in claim 1 or 2, feature exist
In, comprising:
By MgO, Ta2O5With the source A according to chemical composition MgTa2O6- x mol% A is weighed and is mixed, and obtains material powder；
Gained material powder is not less than 8 hours in 1000~1250 DEG C of calcinings, synthesizes MT powder；
By gained MT powder through granulation, molding and sintering, the tantalic acid magnesium media ceramic with ultrahigh Q-value is obtained.
4. preparation method according to claim 3, which is characterized in that the purity of the MgO is greater than 99%, the Ta2O5's
Purity is greater than 99%.
5. preparation method according to claim 3 or 4, which is characterized in that the source A is the oxidation of the oxide, Zn of B
The oxidation of object, the oxide of Mg, the oxide of Ga, the oxide of W, the oxide of Sn, the oxide of Zr, the oxide of Al and Mn
The compound that at least one of object or/and high-temperature decomposition product are A.
6. the preparation method according to any one of claim 3-5, which is characterized in that the D of the MT powder502 μm of <.
7. the preparation method according to any one of claim 3-6, which is characterized in that binder used in the granulation is poly-
At least one of vinyl alcohol, polyvinyl formal, carboxymethyl cellulose.
8. preparation method according to claim 7, which is characterized in that the quality of the binder be material powder 1~
3wt%。
9. the preparation method according to any one of claim 3-8, which is characterized in that the sintering is in Mg atmosphere
After being sintered 4~12 hours at 1500~1600 DEG C, 1000~1200 DEG C are down to 1~2 DEG C/min of cooling rate, then with furnace
It is cooled to room temperature.
10. preparation method according to claim 9, which is characterized in that be warming up to 5~10 DEG C/min of heating rate
1500~1600 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811563982.XA CN109503163A (en) | 2018-12-20 | 2018-12-20 | One kind having ultrahigh Q-value tantalic acid magnesium media ceramic and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811563982.XA CN109503163A (en) | 2018-12-20 | 2018-12-20 | One kind having ultrahigh Q-value tantalic acid magnesium media ceramic and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109503163A true CN109503163A (en) | 2019-03-22 |
Family
ID=65753932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811563982.XA Pending CN109503163A (en) | 2018-12-20 | 2018-12-20 | One kind having ultrahigh Q-value tantalic acid magnesium media ceramic and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109503163A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111747745A (en) * | 2020-05-20 | 2020-10-09 | 四会市康荣新材料有限公司 | Dielectric powder for 5G filter and preparation method thereof |
| CN113683416A (en) * | 2021-08-19 | 2021-11-23 | 陕西天璇涂层科技有限公司 | Preparation method of two-phase magnesium tantalate ceramic block |
| CN113861976A (en) * | 2021-11-03 | 2021-12-31 | 上海应用技术大学 | Magnesium tantalate aliovalent doped hafnium, zirconium, molybdenum and tungsten scintillation luminescent material and preparation method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5756412A (en) * | 1996-06-11 | 1998-05-26 | Amotron Co., Ltd. | Dielectric ceramic composition |
| CN1195651A (en) * | 1997-04-09 | 1998-10-14 | 阿莫同有限公司 | Dielectric ceramic compositions |
| CN101215168A (en) * | 2008-01-16 | 2008-07-09 | 武汉理工大学 | Doping modifying method for lead magnesio-tantalate lead zirconate lead titanate |
| CN101774812B (en) * | 2010-02-02 | 2012-05-09 | 天津大学 | Method for preparing magnesium tantalate microwave ceramic powder by sol-gel technique |
| CN104119075A (en) * | 2014-06-24 | 2014-10-29 | 济南大学 | Novel method for lowering sintering temperature of corundum-type Mg4Ta2O9 microwave dielectric ceramic by doping H3BO3 |
| CN104311024A (en) * | 2014-10-17 | 2015-01-28 | 中国矿业大学 | Microwave dielectric ceramic material with moderate dielectric constant and high quality factor and preparation method of microwave dielectric ceramic material |
| CN105174956A (en) * | 2015-09-11 | 2015-12-23 | 天津大学 | High-quality-factor microwave dielectric ceramic used in X-band and preparation method thereof |
| CN107382313A (en) * | 2017-06-02 | 2017-11-24 | 中国科学院上海硅酸盐研究所 | A kind of microwave-medium ceramics of ultra high quality factor, middle low-k and nearly zero-temperature coefficient and preparation method thereof |
| US20170341950A1 (en) * | 2016-05-31 | 2017-11-30 | Skyworks Solutions, Inc. | High q modified barium magnesium tantalate for high frequency applications |
| CN107805067A (en) * | 2017-11-02 | 2018-03-16 | 中国科学院上海硅酸盐研究所 | A kind of dielectric constant microwave ceramic medium of zero frequency temperature coefficient and ultra-low loss and preparation method thereof |
-
2018
- 2018-12-20 CN CN201811563982.XA patent/CN109503163A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5756412A (en) * | 1996-06-11 | 1998-05-26 | Amotron Co., Ltd. | Dielectric ceramic composition |
| CN1195651A (en) * | 1997-04-09 | 1998-10-14 | 阿莫同有限公司 | Dielectric ceramic compositions |
| CN101215168A (en) * | 2008-01-16 | 2008-07-09 | 武汉理工大学 | Doping modifying method for lead magnesio-tantalate lead zirconate lead titanate |
| CN101774812B (en) * | 2010-02-02 | 2012-05-09 | 天津大学 | Method for preparing magnesium tantalate microwave ceramic powder by sol-gel technique |
| CN104119075A (en) * | 2014-06-24 | 2014-10-29 | 济南大学 | Novel method for lowering sintering temperature of corundum-type Mg4Ta2O9 microwave dielectric ceramic by doping H3BO3 |
| CN104311024A (en) * | 2014-10-17 | 2015-01-28 | 中国矿业大学 | Microwave dielectric ceramic material with moderate dielectric constant and high quality factor and preparation method of microwave dielectric ceramic material |
| CN105174956A (en) * | 2015-09-11 | 2015-12-23 | 天津大学 | High-quality-factor microwave dielectric ceramic used in X-band and preparation method thereof |
| US20170341950A1 (en) * | 2016-05-31 | 2017-11-30 | Skyworks Solutions, Inc. | High q modified barium magnesium tantalate for high frequency applications |
| CN107382313A (en) * | 2017-06-02 | 2017-11-24 | 中国科学院上海硅酸盐研究所 | A kind of microwave-medium ceramics of ultra high quality factor, middle low-k and nearly zero-temperature coefficient and preparation method thereof |
| CN107805067A (en) * | 2017-11-02 | 2018-03-16 | 中国科学院上海硅酸盐研究所 | A kind of dielectric constant microwave ceramic medium of zero frequency temperature coefficient and ultra-low loss and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| MINGZHAO DANG ET AL: "investigation of phase composition and microwave dielectric properties of MgO-Ta2O5 ceramic with ultrahigh Qf value", 《JOURNAL OF THE AMERICAN CERAMIC SOCIETY》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111747745A (en) * | 2020-05-20 | 2020-10-09 | 四会市康荣新材料有限公司 | Dielectric powder for 5G filter and preparation method thereof |
| CN113683416A (en) * | 2021-08-19 | 2021-11-23 | 陕西天璇涂层科技有限公司 | Preparation method of two-phase magnesium tantalate ceramic block |
| CN113683416B (en) * | 2021-08-19 | 2023-03-03 | 陕西天璇涂层科技有限公司 | Preparation method of two-phase magnesium tantalate ceramic block |
| CN113861976A (en) * | 2021-11-03 | 2021-12-31 | 上海应用技术大学 | Magnesium tantalate aliovalent doped hafnium, zirconium, molybdenum and tungsten scintillation luminescent material and preparation method thereof |
| CN113861976B (en) * | 2021-11-03 | 2023-03-21 | 上海应用技术大学 | Magnesium tantalate aliovalent doped hafnium, zirconium, molybdenum and tungsten scintillation luminescent material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109503163A (en) | One kind having ultrahigh Q-value tantalic acid magnesium media ceramic and preparation method thereof | |
| CN103232235B (en) | Low-temperature sintered composite microwave dielectric ceramic material and preparation method thereof | |
| CN109111229B (en) | High-temperature sintered microwave dielectric ceramic material and preparation method thereof | |
| CN107117967B (en) | Low-temperature sintered composite microwave dielectric ceramic material and preparation method thereof | |
| CN107188557B (en) | Microwave dielectric ceramic material and preparation method thereof | |
| Chaouchi et al. | ZnTiO3 ceramic sintered at low temperature with glass phase addition for LTCC applications | |
| CN112851346B (en) | Ultralow-loss zirconium magnesium niobate system microwave dielectric ceramic material and preparation method thereof | |
| CN104108929A (en) | Low-temperature sintered composite microwave dielectric ceramic material and preparation method thereof | |
| JP4632534B2 (en) | Dielectric porcelain and manufacturing method thereof | |
| CN104860672A (en) | High dielectric microwave ceramic dielectric material and preparation method thereof | |
| CN108439969B (en) | Low-dielectric-constant temperature-stable microwave medium and preparation method thereof | |
| CN108147809B (en) | Medium-low temperature sintered barium-titanium series microwave dielectric material and preparation method thereof | |
| CN107244916B (en) | Niobate-series low-temperature sintered microwave dielectric ceramic material and preparation method thereof | |
| CN110483042A (en) | A kind of novel single phase microwave dielectric ceramic material and preparation method thereof | |
| WO2019126969A1 (en) | Dielectric ceramic material and method for preparing same | |
| JPH1135373A (en) | Dielectric ceramic composition | |
| CN111925207B (en) | Mg3B2O6-Ba3(VO4)2Composite ceramic material and preparation method thereof | |
| CN113336539A (en) | Microwave dielectric ceramic material, preparation method and application | |
| Ji et al. | Effects of MnO2 and WO3 co-doping and sintering temperature on microstructure, microwave dielectric properties of Ba2Ti9O20 microwave ceramics | |
| CN109437899A (en) | A kind of microwave medium ceramic material with ultrahigh Q-value and preparation method thereof | |
| JP2014141366A (en) | DIELECTRIC PORCELAIN COMPOSITION CONTAINING BaO-MgO-Ta2O5 BASED OXIDE AS BASE, AND MICROWAVE DIELECTRIC RESONATOR WITH HIGH Q VALUE PRODUCED FROM THE COMPOSITION | |
| CN105777108B (en) | A kind of nanometer media ceramic of high-k and preparation method thereof | |
| CN111747745A (en) | Dielectric powder for 5G filter and preparation method thereof | |
| CN107805067A (en) | A kind of dielectric constant microwave ceramic medium of zero frequency temperature coefficient and ultra-low loss and preparation method thereof | |
| CN116854472A (en) | Microwave dielectric material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190322 |
|
| WD01 | Invention patent application deemed withdrawn after publication |