JPH02217348A - Raw material for slip of ceramics - Google Patents
Raw material for slip of ceramicsInfo
- Publication number
- JPH02217348A JPH02217348A JP1039744A JP3974489A JPH02217348A JP H02217348 A JPH02217348 A JP H02217348A JP 1039744 A JP1039744 A JP 1039744A JP 3974489 A JP3974489 A JP 3974489A JP H02217348 A JPH02217348 A JP H02217348A
- Authority
- JP
- Japan
- Prior art keywords
- slurry
- slip
- raw material
- granules
- medium
- 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
- 239000000919 ceramic Substances 0.000 title claims abstract description 22
- 239000002994 raw material Substances 0.000 title claims abstract description 21
- 239000008187 granular material Substances 0.000 claims abstract description 25
- 239000000126 substance Substances 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 13
- 239000002002 slurry Substances 0.000 claims description 32
- 238000000034 method Methods 0.000 abstract description 18
- 238000005469 granulation Methods 0.000 abstract description 12
- 230000003179 granulation Effects 0.000 abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract description 3
- 235000019353 potassium silicate Nutrition 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 abstract description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 abstract description 3
- -1 Y2O3 Chemical class 0.000 abstract description 2
- 230000004931 aggregating effect Effects 0.000 abstract description 2
- 150000002894 organic compounds Chemical class 0.000 abstract description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910000765 intermetallic Inorganic materials 0.000 abstract 1
- 229910052761 rare earth metal Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 9
- 238000000465 moulding Methods 0.000 description 8
- 239000000654 additive Substances 0.000 description 6
- 238000005266 casting Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000001694 spray drying Methods 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 2
- BYFGZMCJNACEKR-UHFFFAOYSA-N aluminium(i) oxide Chemical compound [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007582 slurry-cast process Methods 0.000 description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-M Butyrate Chemical compound CCCC([O-])=O FERIUCNNQQJTOY-UHFFFAOYSA-M 0.000 description 1
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Natural products CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 150000001540 azides Chemical class 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000001935 peptisation Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 150000002909 rare earth metal compounds Chemical class 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はセラミックスの泥漿用原料、すなわちセラミッ
クスの泥漿鋳込み、泥漿を用いるドクターブレード、コ
ーティング等によるセラミックス成形法（以下泥漿成形
法という）に用いる泥漿用の原料に関する。Detailed Description of the Invention (Industrial Application Field) The present invention is used as a raw material for ceramic slurry, that is, for ceramic slurry casting, a doctor blade using slurry, a ceramic forming method using coating, etc. (hereinafter referred to as slurry forming method). Concerning raw materials for slurry.
（従来技術）
近年、ファ不ンセラミックスの粉体を原料とするセラミ
ックス成形体においては金属材料、有機材料からなる成
形物に比して優れた機械的、化学的、熱的特性が注目さ
れ、各種の分野でその用途開発がなされている。(Prior art) In recent years, ceramic molded bodies made from powdered Fahun ceramics have attracted attention for their superior mechanical, chemical, and thermal properties compared to molded bodies made of metal or organic materials. Its uses are being developed in various fields.
しかして、セラミックス成形物において機械的、熱的特
性を向上させるには、均質かつ緻密で微細な結晶構造を
持つ焼結体であることが要求され、これに対処するには
セラミックス原料が均質かつ微細であることが必要であ
り、これに伴いセラミックスの原料のより一層の微粉末
化が要求される。Therefore, in order to improve the mechanical and thermal properties of a ceramic molded product, a sintered body with a homogeneous, dense, and fine crystal structure is required. It is necessary that the ceramic material be fine, and as a result, the ceramic raw material is required to be made into a finer powder.
一方、伝統的なセラミックスの成形法の一つとして泥漿
′鋳込成形法を代表例とする泥漿を用いた泥漿成形法が
あり、当該成形法は大型、複雑な構造のセラミックス成
形物の成形に適し、その重要性が再認識されている。On the other hand, as one of the traditional ceramic molding methods, there is a slurry molding method using slurry, a representative example of which is the slurry casting method. Its importance is being reaffirmed.
こめように、セラミックス成形物の機械的、熱的特性を
向上させるにはセラミックス原料の微粉末化が必要であ
るが、セラミックス成形物の成形上の面からすれば原料
が微粉であるほど内部欠陥の少ない均一な成形物を得る
ことが難しい。In general, it is necessary to finely powder the ceramic raw material to improve the mechanical and thermal properties of ceramic molded products, but from the perspective of forming ceramic molded products, the finer the raw material, the more likely it is that internal defects will occur. It is difficult to obtain a uniform molded product with a small amount of
（発明が解決しようとする課題）
かかる問題に対処する手段として、本出願人は特願昭６
２−３３１８３３号にて、セラミックスの微粉体を凝集
させた造粒体を泥漿用原料とするセラミックス成形物の
製造方法を提案している。(Problem to be solved by the invention) As a means to deal with this problem, the applicant has filed a patent application filed in
No. 2-331833 proposes a method for manufacturing a ceramic molded article using granules obtained by agglomerating fine ceramic powder as a raw material for slurry.
本発明の目的は、泥漿用原料である造粒体の泥漿用媒体
での分散性、解膠性を向上させて、泥漿成形に適した安
定な泥漿を得ることにある。An object of the present invention is to improve the dispersibility and peptization of granules, which are raw materials for slurry, in a slurry medium to obtain a stable slurry suitable for slurry molding.
（課題を解決するための手段）
本発明はセラミックスの微粉体を凝集させた造粒体から
なるセラミックスの泥漿用原料であり、当該造粒体は泥
漿用媒体に対して親和性の物質を有していることを特徴
とするものであり、また親和性の物質が親水性の物質で
あることを特徴とするものである。(Means for Solving the Problems) The present invention is a raw material for ceramic slurry comprising granules obtained by agglomerating fine ceramic powder, and the granules contain a substance that has an affinity for the slurry medium. It is characterized in that the substance it has affinity for is a hydrophilic substance.
泥漿用媒体は一般に水またはアルコールであり、従って
親和性物質としては一般に親水性物質であって、具体的
には以下の親水基を持つ有機化合物、Ｙ２Ｏ１等の希土
類金属化合物、ＭｇＯ，ＣａＯ等のアルカリ土類金属酸
化物、水ガラス、本節粘土等親水性無機物質を挙げるこ
とができる。The medium for the slurry is generally water or alcohol, and therefore the affinity substance is generally a hydrophilic substance, specifically the following organic compounds with hydrophilic groups, rare earth metal compounds such as Y2O1, MgO, CaO, etc. Examples include hydrophilic inorganic substances such as alkaline earth metal oxides, water glass, and clay.
−ＣＯＯＩＩ、−００Ｈ，−ＣＳＯＨ，−５ＯＨ，−Ｃ
ＳＳ）ｌ、−ＳＯ，Ｈ，−５Ｏ２Ｈ，−５ＯＨ。-COOII, -00H, -CSOH, -5OH, -C
SS)l, -SO,H, -5O2H, -5OH.
−ＣＯＯＭ’ｌ 、 −００Ｍ’ｌ 、 −ＣＯ−０−
ＣＯ−、−ＣＯＯＲ’２．−ＣＯＸ″３．−０Ｘ４′３
．−ｃｏＮｘ’ 、 −０ＮＨ，、−ＣＯ−ＮＨＮＨ２
，−ＣＯＮＨＣＯ、−Ｃ（ＮＨ）ＮＨ２゜−Ｃ＝Ｎ 、
−ＮＣ、−０ＣＮ 、 −ＮＣＯ，−８ＣＮ 、−Ｎ
Ｃ８，−Ｃ）１０．−ＯＨ，−ＣＨ３。-COOM'l, -00M'l, -CO-0-
CO-, -COOR'2. -COX″3.-0X4′3
．． -coNx', -0NH,, -CO-NHNH2
, -CONHCO, -C(NH)NH2゜-C=N,
-NC, -0CN, -NCO, -8CN, -N
C8, -C)10. -OH, -CH3.
−３）Ｉ、−００Ｈ，−ＮＨ２，・ＮＨ，−ＮＨ４，−
ＮＨＮＨ２，−ＯＲ“２．−Ｏ□Ｒ“２（但し、ネｌ：
金属、＄２：アルキル基、＄３＝ハロゲン、シアン、ア
ジド）
本発明における造粒体はＺｒＯ□、Ａ１□０１、その他
のセラミックスの微粉体を親和性物質とともに凝集して
造粒したもので、造粒法としては下記の公知の方法を採
用することができる。すなわち、（１）加湿した粉体に
転動作用を付与して球形粒子に凝集させる転勤式造粒法
、（２）原料粉体の一定量を一定の大きさ、形状に圧縮
成形して粒状物を作る圧縮造粒法、（３）粉体を流動化
させてこれにスプレーノズルから液を噴霧し粒子表面を
液コーディングして造粒する流動層造粒法、（４）スラ
リーを加圧型ノズルまたは２流体ノズルを用いて微粉化
し造粒塔内で空冷固化して球状造粒物を得る噴射造粒法
、（５）原料粉体をスラリー化して噴霧乾燥すると同時
に造粒する噴霧乾燥造粒法等を採用し得る。-3) I, -00H, -NH2, .NH, -NH4, -
NHNH2, -OR"2.-O□R"2 (however, nel:
(metal, $2: alkyl group, $3 = halogen, cyanide, azide) The granules in the present invention are made by aggregating and granulating fine powders of ZrO□, A1□01, and other ceramics together with an affinity substance. As the granulation method, the following known method can be adopted. Specifically, (1) a rolling granulation method in which humidified powder is given a rolling action to agglomerate into spherical particles; (2) a certain amount of raw material powder is compression-molded into a certain size and shape to form granules. (3) Fluidized bed granulation method, in which powder is fluidized and then sprayed with liquid from a spray nozzle to coat the particle surface with liquid, (4) Slurry is made into a pressurized granulation method. Injection granulation method, which obtains spherical granules by pulverizing the powder using a nozzle or two-fluid nozzle and solidifying it by air-cooling in a granulation tower; (5) Spray drying method, in which raw material powder is slurried, spray-dried, and granulated at the same time. A particle method etc. can be adopted.
これらの造粒法においては噴霧乾燥造粒法、流動層造粒
法が好ましい、また、造粒体の形状は特に限定されるも
のではないが球状が好ましく、かつ平均粒子径は１０〜
１０００μｍ特に２０〜１００μｍのものが好ましい。Among these granulation methods, spray drying granulation method and fluidized bed granulation method are preferred.Although the shape of the granules is not particularly limited, it is preferably spherical, and the average particle size is 10 to 10.
1000 μm, especially 20 to 100 μm is preferred.
平均粒子径が１０８ｍ未満の場合には鋳込成形時の着肉
時間が長くなり、かつ内部の固化が遅くて均一な成形体
が得られない、また、乾燥時、仮焼時の水分の飛散や発
生ガスの飛散が不充分となる。一方、平均粒子径が１０
００μｌ′＠−越える場合には泥漿の調整が難しく、成
形が行えなくなる。If the average particle size is less than 108 m, the time for ink forming during casting will be longer, internal solidification will be slow and a uniform molded product will not be obtained, and moisture will scatter during drying and calcination. and the dispersion of generated gas becomes insufficient. On the other hand, the average particle diameter is 10
If it exceeds 00 μl'@-, it will be difficult to adjust the slurry and molding will not be possible.
（発明の作用・効果）
造粒体は粒径が大きくて沈澱し易いことから、造粒体を
用いて泥漿成形に適した安定な泥漿を得ることは難しい
が、本発明に係る造粒体はその内部または内外両部に媒
体に対する親和性物質を有しているため、同親和性物質
が媒体を吸着して造粒体の表面に媒体の層を形成させる
。従って、本発明に係る造粒体は媒体中での分散性に優
れ、同造粒体により泥漿成形に適した安定な泥漿を得る
ことができる。(Actions and Effects of the Invention) Since granules have a large particle size and tend to settle, it is difficult to obtain a stable slurry suitable for slurry molding using granules, but the granules according to the present invention Since it has a substance with affinity for the medium inside or both inside and outside, the substance with affinity adsorbs the medium and forms a layer of the medium on the surface of the granule. Therefore, the granules according to the present invention have excellent dispersibility in a medium, and a stable slurry suitable for slurry molding can be obtained using the granules.
（実施例）
泥漿用原料である造粒体を原料調合、解砕混合、乾燥造
粒にて形成し、得られた造粒体を用いて鋳込成形用の泥
漿を調整して成形性の評価を行った。(Example) Granules, which are raw materials for slurry, are formed by mixing raw materials, crushing and mixing, and drying and granulation, and the resulting granules are used to adjust slurry for casting molding to improve moldability. We conducted an evaluation.
（１）原料
主原料Ａ ： Ｙ２Ｏ，を含有する平均粒子径０．３５
μｍのＸｒ０２（Ｙ２Ｏ３５，２ｗｔ％含有）Ｂ：平均
粒子径０．３９μ厘のＡｌ２Ｏ，（純度９９．９％）
Ｃ：平均粒子径０．３４μｍのＺｒ０２（純度９９．５
％）
添加物ａ：ポリビニルアルコール熱処理物ｂ：ワックス
エマルジョン
Ｃ：ボリビニルブチラート
ｄ：ポリアクリル酸
ｅ：水ガラス
ｆ：本節粘土
ｇ ： Ｙ２Ｏ５
ｈ ： Ｍｇ０
ｉ ： ＣａＯ
媒体 水
（２）原料調合
主原料に対して添加物を添加物ａ〜ｆについては１ｗｔ
％、添加物ｇ〜ｉについては０．５ｗｔ％添加し、次い
で水道水をスラリー含水分が６０ｗｔ％となるように添
加する。(1) Raw material Main raw material A: Average particle diameter containing Y2O, 0.35
μm of Xr02 (Y2O35, containing 2 wt%) B: Al2O with an average particle size of 0.39 μm (purity 99.9%) C: Zr02 with an average particle size of 0.34 μm (purity 99.5
%) Additive a: polyvinyl alcohol heat-treated product b: wax emulsion C: polyvinyl butyrate d: polyacrylic acid e: water glass f: Honbushi clay g: Y2O5 h: Mg0 i: CaO Medium Water (2) Raw material mixer Additives to raw materials: 1wt for additives a to f
%, and 0.5 wt % of additives g to i are added, and then tap water is added so that the slurry moisture content becomes 60 wt %.
（３）解砕混合、乾燥造粒
調合された原料をボットミルで２４時間混合して造粒用
泥漿を調製し、得られた泥漿を用いて噴霧乾燥法にて造
粒体を得る（入口温度２３０℃、出口温度９０℃）
（４）鋳込成形用泥漿の調製
造粒体に水道水を４０ｗｔ％添加して真空混線機で６０
分混合して泥漿を調製するとともに（α法）、造粒体に
水道水４０ｗｔ％、カルボン酸系分散剤１ｗｔ％添加し
て真空混線機で６０分混合して泥漿を調製する（β法）
。(3) Crushing, mixing and drying Granules Mix the prepared raw materials in a bot mill for 24 hours to prepare slurry for granulation, and use the slurry obtained to obtain granules by spray drying (inlet temperature (230℃, outlet temperature 90℃) (4) Preparation of slurry for casting molding Add 40wt% of tap water to the granules and mix with a vacuum mixer to 60%
At the same time, 40 wt% of tap water and 1 wt% of a carboxylic acid dispersant are added to the granules and mixed for 60 minutes in a vacuum mixer to prepare a slurry (α method).
.
（５）鋳込成形
有底筒状のコツプ用の石膏からなる鋳込型に泥漿を２ｋ
ｇ／ｃ■２の加圧状態で鋳込み、得られた成形物を乾燥
する。得られた成形物の切れ、クラック、その他の損傷
等の有無、鋳込型に対する離型状態を観察して良好なも
のを良（○）、良好でないものを否（×）とする。(5) Pour 2k of slurry into a casting mold made of plaster for a bottomed cylindrical pot.
It is cast under a pressure of g/c 2, and the resulting molded product is dried. The presence or absence of cuts, cracks, and other damage in the obtained molded product and the release state from the casting mold were observed, and those that were good were evaluated as good (◯), and those that were not good were evaluated as bad (×).
（６）成形性評価
成形性の評価は別表の通りであり、主原料のみからなる
造粒体の場合（Ｎｏ、１ 、Ｎｏ、４２） 、添加物が
親水性物質でない造粒体の場合（Ｎｏ、２．Ｎｏｊ、Ｎ
ｏ、４３゜Ｎｏ、４４＞には成形性が悪い、添加物が十
分に親水性を有する物質ではない造粒体の場合（Ｎｏ、
９．Ｎｏ、１７、Ｎｏ、４１．Ｎｏ、５０．Ｎｏ、５８
．Ｎｏ、６６、Ｎｏ、８２．Ｎｏ、８３）には、泥漿中
に分散剤を添加することにより成形性が良好になる。添
加物が親水性物質単独または同物質と親水性物質でない
併用の造粒体の場合には、成形性は全て良好である。(6) Evaluation of moldability The evaluation of moldability is as shown in the attached table. No, 2. Noj, N
o, 43°No, 44> in the case of granules that have poor moldability and whose additives are not sufficiently hydrophilic (No,
9. No, 17, No, 41. No, 50. No. 58
．． No, 66, No, 82. No. 83) has good moldability by adding a dispersant to the slurry. In the case of granules in which the additive is a hydrophilic substance alone or a combination of the same substance and a non-hydrophilic substance, the moldability is good in all cases.
Claims (2)
り、当該造粒体は泥漿用媒体に対して親和性の物質を有
していることを特徴とするセラミックスの泥漿用原料。(1) A raw material for ceramic slurry, which is made of granules obtained by agglomerating fine ceramic powder, and the granules have a substance that has an affinity for the slurry medium.
親水性の物質であることを特徴とするセラミックスの泥
漿用原料。(2) The raw material for ceramic slurry according to item 1, wherein the substance is a hydrophilic substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1039744A JPH0745346B2 (en) | 1989-02-20 | 1989-02-20 | Ceramic slurry casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1039744A JPH0745346B2 (en) | 1989-02-20 | 1989-02-20 | Ceramic slurry casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02217348A true JPH02217348A (en) | 1990-08-30 |
| JPH0745346B2 JPH0745346B2 (en) | 1995-05-17 |
Family
ID=12561474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1039744A Expired - Lifetime JPH0745346B2 (en) | 1989-02-20 | 1989-02-20 | Ceramic slurry casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0745346B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08253367A (en) * | 1989-05-30 | 1996-10-01 | Remet Corp | Ceramic shell mold and core for reactive metal casting |
| US5944088A (en) * | 1987-01-28 | 1999-08-31 | Remet Corporation | Ceramic shell molds and cores for casting of reactive metals |
| US6337295B1 (en) | 1999-05-12 | 2002-01-08 | Tdk Corporation | Ceramic granule for molding ceramic product, process for producing or treating the same, ceramic molded product and process for producing the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060057846A1 (en) * | 2002-09-27 | 2006-03-16 | Toto Ltd. | Composition for use as sanitary earthenware material, method for production thereof, method for manufacturing sanitary earthenware using said composition |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58223437A (en) * | 1982-06-18 | 1983-12-26 | Tdk Corp | Inorganic powder having improved dispersibility |
| JPS60192605A (en) * | 1984-03-14 | 1985-10-01 | 日立化成工業株式会社 | Manufacture of ceramic sludge |
| JPS63274647A (en) * | 1987-04-30 | 1988-11-11 | Sumitomo Chem Co Ltd | Production of ceramics granules |
-
1989
- 1989-02-20 JP JP1039744A patent/JPH0745346B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58223437A (en) * | 1982-06-18 | 1983-12-26 | Tdk Corp | Inorganic powder having improved dispersibility |
| JPS60192605A (en) * | 1984-03-14 | 1985-10-01 | 日立化成工業株式会社 | Manufacture of ceramic sludge |
| JPS63274647A (en) * | 1987-04-30 | 1988-11-11 | Sumitomo Chem Co Ltd | Production of ceramics granules |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5944088A (en) * | 1987-01-28 | 1999-08-31 | Remet Corporation | Ceramic shell molds and cores for casting of reactive metals |
| JPH08253367A (en) * | 1989-05-30 | 1996-10-01 | Remet Corp | Ceramic shell mold and core for reactive metal casting |
| US6337295B1 (en) | 1999-05-12 | 2002-01-08 | Tdk Corporation | Ceramic granule for molding ceramic product, process for producing or treating the same, ceramic molded product and process for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0745346B2 (en) | 1995-05-17 |
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