JPH07247169A - Production of ceramic capacitor raw material powder - Google Patents
Production of ceramic capacitor raw material powderInfo
- Publication number
- JPH07247169A JPH07247169A JP7018441A JP1844195A JPH07247169A JP H07247169 A JPH07247169 A JP H07247169A JP 7018441 A JP7018441 A JP 7018441A JP 1844195 A JP1844195 A JP 1844195A JP H07247169 A JPH07247169 A JP H07247169A
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- ceramic capacitor
- material powder
- mixing
- powder
- 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.)
- Granted
Links
- 239000002994 raw material Substances 0.000 title claims abstract description 62
- 239000000843 powder Substances 0.000 title claims abstract description 52
- 239000003985 ceramic capacitor Substances 0.000 title claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 title claims description 27
- 239000000654 additive Substances 0.000 claims abstract description 42
- 238000002156 mixing Methods 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 230000000996 additive effect Effects 0.000 claims description 25
- 238000010298 pulverizing process Methods 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract 2
- 229910010293 ceramic material Inorganic materials 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 10
- 239000002245 particle Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/14—Methods for preparing oxides or hydroxides in general
-
- 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
- C04B35/46—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 titanium oxides or titanates
- C04B35/462—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 titanium oxides or titanates based on titanates
- C04B35/465—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 titanium oxides or titanates based on titanates based on alkaline earth metal titanates
- C04B35/468—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 titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
- C04B35/4682—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 titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates based on BaTiO3 perovskite phase
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/30—Three-dimensional structures
- C01P2002/34—Three-dimensional structures perovskite-type (ABO3)
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/50—Solid solutions
- C01P2002/52—Solid solutions containing elements as dopants
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/40—Electric properties
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Capacitors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、セラミック原料粉末
の製造方法に関し、詳しくは、セラミックコンデンサ用
のセラミック原料粉末の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a ceramic raw material powder, and more particularly to a method for producing a ceramic raw material powder for a ceramic capacitor.
【０００２】[0002]
【従来の技術】セラミックコンデンサ用のセラミック原
料粉末を製造する場合、従来は、図６に示すように、Ｂ
ａＴｉＯ3などの主原料２１に対して、ＣａＺｒＯ3，Ｍ
ｇＴｉＯ3，Ａｌ2Ｏ3，ＳｉＯ2などの微量添加物２２を
添加し、それをボールミルで混合することにより製造し
ている。2. Description of the Related Art When manufacturing a ceramic raw material powder for a ceramic capacitor, conventionally, as shown in FIG.
For the main raw material 21 such as aTiO 3 , CaZrO 3 , M
It is manufactured by adding a trace additive 22 such as gTiO 3 , Al 2 O 3 and SiO 2 and mixing it in a ball mill.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記従来の製
造方法においては、主原料及び微量添加物の粒径が異な
り、しかも微量添加物はその割合（添加量）が少ないた
め、短時間に主原料と微量添加物とを均一に混合するこ
とが困難であるという問題点がある。However, in the above-mentioned conventional manufacturing method, the particle diameters of the main raw material and the trace additive are different, and the proportion (addition amount) of the trace additive is small, so that the main additive is used in a short time. There is a problem that it is difficult to uniformly mix the raw material and the trace amount additive.
【０００４】また、均一に混合するために長時間混合す
ると、玉石からの汚染が生じたり、粉砕によって原料の
比表面積が過度に増大し、後工程における取扱いが困難
になったりするという問題点がある。In addition, when mixing for a long time for uniform mixing, there are problems that pollution from cobblestones occurs and that the specific surface area of the raw material increases excessively due to pulverization, which makes handling in subsequent steps difficult. is there.
【０００５】また、このような問題点を解決するため
に、特開平４−１７０３５４号公報に開示されているよ
うな、微量添加物を混合粉砕した後、主原料を加えて混
合するセラミックコンデンサ原料粉末の製造方法が提案
されているが、この製造方法においては、粉砕された微
量添加物の各粒子がそれぞれ組成の異なる粒子であるた
め、主原料を加えて混合した後の工程において部分的な
組成偏析が生じやすいという問題点がある。Further, in order to solve such a problem, as disclosed in Japanese Patent Application Laid-Open No. 4-170354, a raw material for a ceramic capacitor is prepared by mixing and pulverizing a trace amount of additives, and then adding and mixing a main raw material. Although a method for producing a powder has been proposed, in this production method, since each particle of the pulverized trace additive has a different composition, a partial process is performed in the step after adding and mixing the main raw materials. There is a problem that composition segregation easily occurs.
【０００６】この発明は、上記問題点を解決するもので
あり、主原料と微量添加物との混合度が高く、均一な組
成を有する原料粉体を製造することが可能なセラミック
コンデンサ原料粉末の製造方法を提供することを目的と
する。The present invention solves the above problems and provides a ceramic capacitor raw material powder having a high degree of mixing of the main raw material and the trace amount additive and capable of producing a raw material powder having a uniform composition. It is intended to provide a manufacturing method.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、この発明のセラミックコンデンサ原料粉末の製造方
法は、主原料と微量添加物とを混合してセラミック原料
粉末を製造する方法において、微量添加物を混合粉砕し
て仮焼し、これを再び混合粉砕した後、主原料と混合す
ることを特徴とする。In order to achieve the above object, a method for producing a ceramic capacitor raw material powder according to the present invention is a method for producing a ceramic raw material powder by mixing a main raw material and a trace amount additive. It is characterized in that the additives are mixed and pulverized and calcined, and the mixture is mixed and pulverized again and then mixed with the main raw material.
【０００８】[0008]
【作用】この発明のセラミックコンデンサ原料粉末の製
造方法においては、微量添加物をまとめて混合粉砕する
ことにより、微量添加物が微細な粉末（粒子）にまで粉
砕され、均一に混合される。そして、粉砕され、均一に
混合された微量添加物粉末を仮焼することにより、微量
添加物が熱拡散によって均一な化合物になる。In the method for producing a ceramic capacitor raw material powder according to the present invention, the trace additives are collectively mixed and pulverized, whereby the trace additives are pulverized into fine powder (particles) and uniformly mixed. Then, by calcining the pulverized and uniformly mixed trace additive powder, the trace additive becomes a uniform compound by thermal diffusion.
【０００９】それから、この均一な化合物になった微量
添加物をさらに粉砕した後、これを主原料と混合するこ
とにより、微量添加物と主原料が十分に混合される。Then, the trace amount additive which has become a uniform compound is further crushed and then mixed with the main raw material, whereby the trace amount additive and the main raw material are sufficiently mixed.
【００１０】[0010]
【実施例】以下、この発明の実施例を示して、その特徴
とするところをさらに詳しく説明する。EXAMPLES The features of the present invention will be described in more detail below with reference to examples of the present invention.
【００１１】図１は、この発明の製造方法により製造さ
れたセラミックコンデンサ原料粉末を模式的に示す図解
図である。FIG. 1 is a schematic view showing a ceramic capacitor raw material powder manufactured by the manufacturing method of the present invention.
【００１２】このセラミックコンデンサ原料粉末を製造
するにあたっては、まず、図２に示すように、ＣａＺｒ
Ｏ3，ＭｇＴｉＯ3，Ａｌ2Ｏ3，ＳｉＯ2などの微量添加
物１を混合して、微量添加物の混合粉末１ａを得る。In producing this ceramic capacitor raw material powder, first, as shown in FIG.
A small amount of additive 1 such as O 3 , MgTiO 3 , Al 2 O 3 and SiO 2 is mixed to obtain a mixed powder 1a of the small amount of additive.
【００１３】そして、この微量添加物の混合粉末１ａを
粉砕して、図３に示すような微細化された粉砕粉末１ｂ
を得る。Then, the powder mixture 1a containing the trace amount of additives is pulverized to obtain a finely pulverized powder 1b as shown in FIG.
To get
【００１４】次いで、この微量添加物の粉砕粉末１ｂを
仮焼して均一な化合物とした後、これを再び粉砕して、
図４に示すような、組成が均一な微量添加物の化合物粉
末１ｃを得る。Then, the pulverized powder 1b of the trace amount additive is calcined to obtain a uniform compound, which is pulverized again,
As shown in FIG. 4, compound powder 1c of a trace amount additive having a uniform composition is obtained.
【００１５】そして、この微量添加物の化合物粉末１ｃ
と主原料（この実施例ではＢａＴｉＯ3）２とを混合す
ることにより、図１に示すように、主原料２と微量添加
物の化合物粉末１ｃが均一に混合された、均一な組成の
セラミックコンデンサ原料粉末３を得ることができる。
なお、このようにして製造されるセラミックコンデンサ
原料粉末３は、主原料（ＢａＴｉＯ3）２の表面全体に
微量添加物の化合物粉末１ｃが付着した状態となってい
る。Compound powder 1c of this trace additive
By mixing the main raw material (BaTiO 3 in this embodiment) 2 with the main raw material 2 and the compound powder 1c of the trace amount additive as shown in FIG. 1, a ceramic capacitor having a uniform composition. The raw material powder 3 can be obtained.
The ceramic capacitor raw material powder 3 manufactured in this manner is in a state where the compound powder 1c of the trace amount additive is attached to the entire surface of the main raw material (BaTiO 3 ) 2.
【００１６】図５は、このセラミックコンデンサ原料粉
末３を成形してなる成形体４を示す図である。この成形
体４においては、主原料（粒子）２間に形成される空隙
が微量添加物の化合物粉末１ｃによって埋められるた
め、ポア容積が減少して成形体４の成形密度が向上す
る。FIG. 5 is a view showing a molded body 4 formed by molding the ceramic capacitor raw material powder 3. In this molded body 4, the voids formed between the main raw materials (particles) 2 are filled with the compound powder 1c of the trace amount additive, so that the pore volume is reduced and the molded density of the molded body 4 is improved.
【００１７】また、上記のようにして製造されたセラミ
ックコンデンサ原料粉末３においては、主原料２と微量
添加物の化合物粉末１ｃとの混合度が向上してセラミッ
クコンデンサ原料粉末３の組成が均一化されるため、均
一な固溶体を得ることが可能になり、ユニット内に強誘
電体相を均一に分布させることができる。Further, in the ceramic capacitor raw material powder 3 produced as described above, the degree of mixing of the main raw material 2 and the trace additive compound powder 1c is improved and the composition of the ceramic capacitor raw material powder 3 is made uniform. Therefore, a uniform solid solution can be obtained, and the ferroelectric phase can be uniformly distributed in the unit.
【００１８】ここで、この発明の製造方法により製造さ
れたセラミックコンデンサ原料粉末を用いて製造した積
層セラミックコンデンサと、従来の製造方法により製造
されたセラミックコンデンサ原料粉末を用いて製造した
積層セラミックコンデンサの特性値（試料数：各１００
０個）を表１に示す。Here, a monolithic ceramic capacitor manufactured by using the ceramic capacitor raw material powder manufactured by the manufacturing method of the present invention and a monolithic ceramic capacitor manufactured by using the ceramic capacitor raw material powder manufactured by the conventional manufacturing method Characteristic value (Number of samples: 100 each
0) is shown in Table 1.
【００１９】[0019]
【表１】 [Table 1]
【００２０】なお、セラミックコンデンサ原料粉末の製
造方法を除いて、両者のセラミックコンデンサ原料粉末
の組成比、素子厚、電極面積、積層枚数などは同じであ
る。Except for the method for producing the ceramic capacitor raw material powder, the composition ratio of the ceramic capacitor raw material powder, the element thickness, the electrode area, and the number of laminated layers are the same.
【００２１】表１から明らかなように、この発明の実施
例にかかる積層セラミックコンデンサは、従来の積層セ
ラミックコンデンサと比較して、誘電損失及び静電容量
温度変化率はほぼ同等であるが、静電容量及び絶縁抵抗
が高く、かつ、ばらつきが小さくなっている。As is clear from Table 1, the monolithic ceramic capacitors according to the examples of the present invention have substantially the same dielectric loss and capacitance temperature change rate as compared with the conventional monolithic ceramic capacitors, but they are static. The capacitance and insulation resistance are high, and the variation is small.
【００２２】したがって、この発明の製造方法により製
造されたセラミックコンデンサ原料粉末を用いることに
より、誘電率が高く、しかも誘電率及び絶縁抵抗のユニ
ット間のばらつきが少ないセラミックコンデンサを製造
することができる。Therefore, by using the ceramic capacitor raw material powder manufactured by the manufacturing method of the present invention, it is possible to manufacture a ceramic capacitor having a high dielectric constant and a small variation in dielectric constant and insulation resistance between units.
【００２３】なお、この発明は、上記実施例に限定され
るものではなく、微量添加物及び主原料の組成などに関
し、発明の要旨の範囲内で種々の変形を加えることが可
能である。また、微量添加物の混合粉砕の程度、仮焼条
件、仮焼後の混合粉砕の程度などにも特に制約はなく、
微量添加物及び主原料の種類や配合割合、セラミックコ
ンデンサに要求される特性などを考慮して適切な条件を
選択することが可能である。The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the invention with respect to the composition of the trace additives and the main raw materials. In addition, there are no particular restrictions on the degree of mixed pulverization of trace additives, calcination conditions, degree of mixed pulverization after calcination, etc.
Appropriate conditions can be selected in consideration of the types and blending ratios of the trace additives and main raw materials, the characteristics required for the ceramic capacitor, and the like.
【００２４】[0024]
【発明の効果】上述のように、この発明のセラミックコ
ンデンサ原料粉末の製造方法は、微量添加物を混合粉砕
して仮焼し、この仮焼体をさらに混合粉砕した後、主原
料と混合するようにしているので、主原料と微量添加物
の混合度が向上し、原料の組成が均一化される。それゆ
え、この発明のセラミックコンデンサ原料粉末を使用す
ることにより、均一な固溶体を得ることが可能になる。As described above, according to the method for producing a ceramic capacitor raw material powder of the present invention, a small amount of additive is mixed and pulverized and calcined, and the calcined body is further mixed and pulverized and then mixed with the main raw material. Therefore, the mixing degree of the main raw material and the trace amount additive is improved, and the composition of the raw material is made uniform. Therefore, it is possible to obtain a uniform solid solution by using the ceramic capacitor raw material powder of the present invention.
【００２５】また、成形時に主原料がつくる空隙を微量
添加物で埋めることにより、成形密度を向上させること
ができる。Further, the molding density can be improved by filling the voids formed by the main raw material during molding with a trace amount of additives.
【００２６】したがって、この発明のセラミックコンデ
ンサ原料粉末を用いることにより、誘電率が高く、しか
も誘電率及び絶縁抵抗のユニット間のばらつきが少ない
セラミックコンデンサを製造することが可能になる。Therefore, by using the ceramic capacitor raw material powder of the present invention, it becomes possible to manufacture a ceramic capacitor having a high dielectric constant and a small variation in the dielectric constant and the insulation resistance between units.
【図１】この発明の一実施例にかかるセラミックコンデ
ンサ原料粉末の製造方法によって製造したセラミックコ
ンデンサ原料粉末を模式的に示す図解図である。FIG. 1 is an illustrative view schematically showing a ceramic capacitor raw material powder produced by a method for producing a ceramic capacitor raw material powder according to an example of the present invention.
【図２】この発明の一実施例にかかるセラミックコンデ
ンサ原料粉末の製造方法の一工程を示す図である。FIG. 2 is a diagram showing one step of a method for producing a ceramic capacitor raw material powder according to an example of the present invention.
【図３】この発明の一実施例にかかるセラミックコンデ
ンサ原料粉末の製造方法の他の工程を示す図である。FIG. 3 is a diagram showing another step of the method for producing the ceramic capacitor raw material powder according to the embodiment of the present invention.
【図４】この発明の一実施例にかかるセラミックコンデ
ンサ原料粉末の製造方法のさらに他の工程を示す図であ
る。FIG. 4 is a diagram showing still another step of the method for producing the ceramic capacitor raw material powder according to the embodiment of the present invention.
【図５】この発明の一実施例にかかるセラミックコンデ
ンサ原料粉末の製造方法によって製造したセラミックコ
ンデンサ原料粉末の成形体を模式的に示す図解図であ
る。FIG. 5 is an illustrative view schematically showing a molded body of ceramic capacitor raw material powder manufactured by the method for manufacturing ceramic capacitor raw material powder according to one example of the present invention.
【図６】従来の製造方法によって製造されたセラミック
コンデンサ原料粉末を模式的に示す図解図である。FIG. 6 is an illustrative view schematically showing a ceramic capacitor raw material powder manufactured by a conventional manufacturing method.
１ 微量添加物 １ａ 微量添加物の混合粉末 １ｂ 微量添加物の粉砕粉末 １ｃ 微量添加物の化合物粉末 ２ 主原料 ３ セラミックコンデンサ原料粉末 ４ 成形体 1 Trace Additives 1a Powder Mixtures of Trace Additives 1b Ground Powders of Trace Additives 1c Compound Powders of Trace Additives 2 Main Raw Material 3 Ceramic Capacitor Raw Material Powder 4 Compact
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 // Ｃ０４Ｂ 35/46 Ｃ０４Ｂ 35/46 Ｄ ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location // C04B 35/46 C04B 35/46 D
Claims (1)
ック原料粉末を製造する方法において、 微量添加物を混合粉砕して仮焼し、これを再び混合粉砕
した後、主原料と混合することを特徴とするセラミック
コンデンサ原料粉末の製造方法。1. A method for producing a ceramic raw material powder by mixing a main raw material and a trace additive, mixing and pulverizing the trace additive and calcining, mixing and pulverizing the mixture again, and then mixing with the main raw material. A method for producing a ceramic capacitor raw material powder, comprising:
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01844195A JP3784427B2 (en) | 1994-01-21 | 1995-01-09 | Manufacturing method of ceramic capacitor |
| GB9500940A GB2286183A (en) | 1994-01-21 | 1995-01-18 | Process for preparation of raw material powder for ceramic capacitor |
| CN 95101890 CN1112534A (en) | 1994-01-21 | 1995-01-20 | Process for preparing of raw material powder for ceramic capacitor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6-22045 | 1994-01-21 | ||
| JP2204594 | 1994-01-21 | ||
| JP01844195A JP3784427B2 (en) | 1994-01-21 | 1995-01-09 | Manufacturing method of ceramic capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07247169A true JPH07247169A (en) | 1995-09-26 |
| JP3784427B2 JP3784427B2 (en) | 2006-06-14 |
Family
ID=26355121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01844195A Expired - Lifetime JP3784427B2 (en) | 1994-01-21 | 1995-01-09 | Manufacturing method of ceramic capacitor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3784427B2 (en) |
| CN (1) | CN1112534A (en) |
| GB (1) | GB2286183A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190111331A (en) * | 2018-03-22 | 2019-10-02 | 주식회사 베이스 | Manufacturing method of dielectric composition for multilayer ceramic condenser |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5550092A (en) * | 1995-02-10 | 1996-08-27 | Tam Ceramics Inc. | Ceramic dielectrics compositions |
| JP4206062B2 (en) | 2004-08-30 | 2009-01-07 | Ｔｄｋ株式会社 | Ceramic electronic component and manufacturing method thereof |
| JP4299759B2 (en) * | 2004-10-12 | 2009-07-22 | Ｔｄｋ株式会社 | Ceramic electronic component and manufacturing method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2439171A1 (en) * | 1978-10-18 | 1980-05-16 | Thomson Csf | LOW SINTER TEMPERATURE DIELECTRIC CERAMIC AND ITS APPLICATION TO THE MANUFACTURE OF ELECTRONIC COMPONENTS |
| JPS60118666A (en) * | 1983-11-30 | 1985-06-26 | 太陽誘電株式会社 | Dielectric ceramic composition |
| EP0155365B1 (en) * | 1983-11-30 | 1989-02-08 | Taiyo Yuden Co., Ltd. | Low temperature sintered ceramic materials for use in solid dielectric capacitors or the like, and method of manufacture |
| DE3475063D1 (en) * | 1983-11-30 | 1988-12-15 | Taiyo Yuden Kk | Low temperature sinterable ceramic materials for use in solid dielectric capacitors or the like, and method of manufacture |
| US4767732A (en) * | 1986-08-28 | 1988-08-30 | Kabushiki Kaisha Toshiba | High dielectric constant ceramic material and method of manufacturing the same |
| US4988650A (en) * | 1989-06-23 | 1991-01-29 | Murata Manufacturing Co., Ltd. | Auxiliary agent for sintering ceramic material |
-
1995
- 1995-01-09 JP JP01844195A patent/JP3784427B2/en not_active Expired - Lifetime
- 1995-01-18 GB GB9500940A patent/GB2286183A/en not_active Withdrawn
- 1995-01-20 CN CN 95101890 patent/CN1112534A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190111331A (en) * | 2018-03-22 | 2019-10-02 | 주식회사 베이스 | Manufacturing method of dielectric composition for multilayer ceramic condenser |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9500940D0 (en) | 1995-03-08 |
| CN1112534A (en) | 1995-11-29 |
| JP3784427B2 (en) | 2006-06-14 |
| GB2286183A (en) | 1995-08-09 |
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