CN107235742A - A kind of ceramic composition and preparation method thereof - Google Patents

A kind of ceramic composition and preparation method thereof Download PDF

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Publication number
CN107235742A
CN107235742A CN201710520809.0A CN201710520809A CN107235742A CN 107235742 A CN107235742 A CN 107235742A CN 201710520809 A CN201710520809 A CN 201710520809A CN 107235742 A CN107235742 A CN 107235742A
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ceramic composition
dielectric constant
weight
content
ceramic
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周远华
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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
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
    • C04B35/80—Fibres, filaments, whiskers, platelets, or the like
    • C04B35/82—Asbestos; Glass; Fused silica
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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
    • 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
    • C04B35/49—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 containing also titanium oxides or titanates
    • C—CHEMISTRY; METALLURGY
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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
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
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    • 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
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
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    • 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
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3213—Strontium oxides or oxide-forming salts thereof
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    • 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
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3215—Barium oxides or oxide-forming salts thereof
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    • 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
    • C04B2235/3251—Niobium oxides, niobates, tantalum oxides, tantalates, or oxide-forming salts thereof
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    • 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
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    • 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
    • C04B2235/3298—Bismuth oxides, bismuthates or oxide forming salts thereof, e.g. zinc bismuthate
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    • 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
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Composite Materials (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

The invention provides a kind of ceramic composition, it is included by weight：Barium titanate 60~70, barium zirconate 20~30, strontium titanates 5~10, calcium titanate 2~5, calcium zirconate 2~5, polyester fiber 5~10, glass fibre 5~10, colliery powder 5~10, turf 5~10 and sinter additives 5~8.The ceramic composition of the present invention, it has uniform dielectric constant and dielectric peak value at room temperature is higher than 11000.

Description

A kind of ceramic composition and preparation method thereof
Technical field
The present invention relates to a kind of ceramic composition and preparation method thereof.
Background technology
With the progress of wireless communication technique, the demand of portable mobile communication product also rolls up, and towards frivolous Short and small, high-reliability and low priceization development, with up to minimizing and light-weighted high density structure reload request.Due to radio communication product It is by microwave transfer signal, wherein used ceramic material, it is necessary to can have high dielectric constant value at room temperature (dielectric constant, ε r) and high quality factor (quality factor, Q × f).
In TaiWan, China patent announcement number the 373201st, a kind of ceramic composition is disclosed, (BaCa) TiO is included3 As Main Ingredients and Appearance, and manganese carbonate (MnCO3), Dysprosium trioxide (Dy2O3), niobium pentaoxide (Nb2O5) then as secondary composition.Though This right ceramic composition can reach dielectric constant more than 10000, but be only capable of being sintered in the case of low oxygen partial pressure, it is impossible to one As sinter under oxidizing atmosphere, it is difficult to industrially apply.
In TaiWan, China patent announcement number the 372948th, a kind of ceramic composition is disclosed, barium titanate is included (BaTiO3), barium zirconate (BaZrO3), calcium titanate (CaTiO3), magnesium titanate (MgTiO3) as Main Ingredients and Appearance, and with nickel oxide (NiO), ceria (CeO2), manganese dioxide (MnO2) and silica (SiO2) it is used as secondary composition.But this ceramic composition It is only capable of reaching dielectric constant between 4000~6000.
In TaiWan, China patent announcement number the 476733rd, a kind of multiple doped titanic acid with high dielectric constant is disclosed Barium, includes [(BaSr) La] [TiMg] O3As Main Ingredients and Appearance, after being sintered, it can be reached at 70 DEG C Celsius higher than 20000 Dielectric constant.Just it is difficult to industrially apply however, the temperature spot of this composition dielectric peak value can not be reduced to room temperature scope.
Industrially production disc type dielectric ceramic safety electric capacity is sintered using tunnel continuous sintering furnace, sintering Temperature stabilization in stove is interval less, even if typically between positive and negative ten degree Celsius of scope very well.But ceramic electrical has one Characteristic, dielectric constant can increase with the rise of sintering temperature, and sintering temperature is higher, and dielectric constant is higher.Therefore in sintering furnace Because of the temperature difference in different temperature ranges, can cause the dielectric constant of dielectric ceramic compositions has uneven situation, Therefore its capacitance makes a variation problems of too in volume production and causes the problem of reliability is not good.
Accordingly, it would be desirable to which a kind of dielectric peak value that can with uniform dielectric constant and at room temperature is higher than ceramic group of 11000 Compound.
The content of the invention
The problem of for prior art, one of the object of the invention is to provide a kind of ceramic composition, and it has uniform Dielectric constant and dielectric peak value at room temperature is higher than 11000.
A kind of ceramic composition, it is included by weight：
The content of the barium titanate is, for example, 61,62,63,64,65,66,67,68 or 69.
The content of the barium zirconate is, for example, 21,22,23,24,25,26,27,28 or 29.
The content of the strontium titanates is, for example, 5.3,5.6,5.9,6.2,6.5,6.8,7.1,7.4,7.7,8,8.3,8.6, 8.9th, 9.2,9.5 or 9.8.
The content of the calcium titanate is, for example, 2.2,2.4.2.6.2.8,3,3.2,3.4,3.6,3.8,4,4.2,4.4,4.6 Or 4.8.
The content of the calcium zirconate is, for example, 2.2,2.4.2.6.2.8,3,3.2,3.4,3.6,3.8,4,4.2,4.4,4.6 Or 4.8.
The content of the polyester fiber is, for example, 5.3,5.6,5.9,6.2,6.5,6.8,7.1,7.4,7.7,8,8.3, 8.6th, 8.9,9.2,9.5 or 9.8.
The content of the glass fibre is, for example, 5.3,5.6,5.9,6.2,6.5,6.8,7.1,7.4,7.7,8,8.3, 8.6th, 8.9,9.2,9.5 or 9.8.
The content of the colliery powder is, for example, 5.3,5.6,5.9,6.2,6.5,6.8,7.1,7.4,7.7,8,8.3, 8.6th, 8.9,9.2,9.5 or 9.8.
The content of the turf is, for example, 5.3,5.6,5.9,6.2,6.5,6.8,7.1,7.4,7.7,8,8.3,8.6, 8.9th, 9.2,9.5 or 9.8.
The content of the sinter additives is, for example, 5.3,5.6,5.9,6.2,6.5,6.8,7.1,7.4 or 7.7.
Preferably, a kind of ceramic composition, it is included by weight：
Preferably, a kind of ceramic composition, it is included by weight：
Preferably, the sinter additives are made up of niobium pentaoxide, bismuth oxide, manganese dioxide and silica.
Compared with the prior art, the present invention has the advantages that：
The ceramic composition of the present invention, it has uniform dielectric constant and dielectric peak value at room temperature is higher than 11000.
Embodiment
Technical scheme is further illustrated below by embodiment.
Embodiment 1
A kind of ceramic composition, it is included by weight：
Embodiment 2
A kind of ceramic composition, it is included by weight：
Embodiment 3
A kind of ceramic composition, it is included by weight：
Embodiment 4
A kind of ceramic composition, it is included by weight：
Comparative example 1
Remaining is same as Example 1, except the content of sinter additives is 4.
Comparative example 2
Remaining is same as Example 1, except the content of sinter additives is 9.
Performance test is carried out to the ceramic composition of embodiment 1~4, the ceramic composition of embodiment 1~4 has uniformly Dielectric constant and dielectric peak value at room temperature are higher than 11000, and the dielectric of the ceramic composition of comparative example 1~2 at room temperature Peak value is 9000~10000, hence it is evident that less than embodiment 1~4.
Applicant states that the present invention illustrates the method detailed of the present invention, but not office of the invention by above-described embodiment It is limited to above-mentioned method detailed, that is, does not mean that the present invention has to rely on above-mentioned method detailed and could implemented.Art Technical staff it will be clearly understood that any improvement in the present invention, equivalence replacement and auxiliary element to each raw material of product of the present invention Addition, selection of concrete mode etc., within the scope of all falling within protection scope of the present invention and being open.

Claims (4)

1. a kind of ceramic composition, it is included by weight：
2. ceramic composition as claimed in claim 1, it is characterised in that it is included by weight：
3. ceramic composition as claimed in claim 1 or 2, it is included by weight：
4. the ceramic composition as described in one of claim 1-3, it is characterised in that the sinter additives are by five oxidations two Niobium, bismuth oxide, manganese dioxide and silica composition.
CN201710520809.0A 2017-06-30 2017-06-30 A kind of ceramic composition and preparation method thereof Withdrawn CN107235742A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101104558A (en) * 2006-06-12 2008-01-16 Tdk株式会社 Electronic device, dielectric ceramic composition and production method thereof
CN102216238A (en) * 2008-11-21 2011-10-12 株式会社村田制作所 Ceramic composition, ceramic green sheet, and ceramic electronic component
CN104370540A (en) * 2014-10-22 2015-02-25 华文蔚 Ceramic composition and preparation method thereof
CN106518067A (en) * 2016-10-27 2017-03-22 盐城工学院 Ceramic composition, ceramic as well as preparation method and application of ceramic

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101104558A (en) * 2006-06-12 2008-01-16 Tdk株式会社 Electronic device, dielectric ceramic composition and production method thereof
CN102216238A (en) * 2008-11-21 2011-10-12 株式会社村田制作所 Ceramic composition, ceramic green sheet, and ceramic electronic component
CN104370540A (en) * 2014-10-22 2015-02-25 华文蔚 Ceramic composition and preparation method thereof
CN106518067A (en) * 2016-10-27 2017-03-22 盐城工学院 Ceramic composition, ceramic as well as preparation method and application of ceramic

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Application publication date: 20171010