KR940019649A - 혼합분말의 제조방법 - Google Patents

혼합분말의 제조방법 Download PDF

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KR940019649A
KR940019649A KR1019940002158A KR19940002158A KR940019649A KR 940019649 A KR940019649 A KR 940019649A KR 1019940002158 A KR1019940002158 A KR 1019940002158A KR 19940002158 A KR19940002158 A KR 19940002158A KR 940019649 A KR940019649 A KR 940019649A
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zirconia
stabilizer
particulate
particle size
suspension
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스테펜 메트칼프 마크
딕손 알란
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존 데렉 잭슨
티옥사이드 스페셜티스 리미티드
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    • 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
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/6261—Milling
    • C04B35/62615—High energy or reactive ball milling
    • 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
    • C04B35/48—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
    • C04B35/486—Fine ceramics
    • 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
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
    • C04B35/62655—Drying, e.g. freeze-drying, spray-drying, microwave or supercritical drying
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    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/40—Surface-active agents, dispersants
    • C04B2103/408—Dispersants
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    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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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
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
    • C04B2235/3225—Yttrium oxide 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
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
    • C04B2235/3246—Stabilised zirconias, e.g. YSZ or cerium stabilised zirconia

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  • Chemical & Material Sciences (AREA)
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Abstract

지르노키니아 및 지르코니아용 안정화제의 혼합물을 제조하는 방법은 0.2㎜-3㎜의 평균입자 크기를 갖는 미립자 혼합 매개물을 존재하에서 미립자 지르코니아 및 미립자 안정화제의 수성 현탁물을 미드 밀(bead mill)내에서 제분하는 단계를 포함한다. 바람직한 안정화제는 이트리움, 세륨, 칼슘 또는 마그네슘의 산화물이다. 놀랍게도, 이 혼합생성물로부터 제조된 세라믹은 공침전된 분말(coprecipitated powder)로부터 제조된 세라믹보다 100℃ 이상의 물로 인한 감성(degradation)에 대해 저항력이 더 크다.

Description

혼합분말의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (15)

  1. 미립자 지르코니아 및 미립자 안정화제를 함유하는 수성 현탁물을 형성시키고 이 현탁물을 0.2-0.3㎜의 평균입자 크기를 갖는 미립자 혼합 매개물의 존재하에 비드 밀(bead mill)내에서 적어도 2분동안 교반시키는 것을 특징으로 하는 지르코니아 및 상기 지르코니아용 안정화제의 혼합물을 제조하는 방법.
  2. 제1항에 있어서, 미립자 지르코니아는 BET 질소 흡착법에 의해 측정된 바와같이 지르코니아의 특정 표면적이 그램 당 1제곱 미터이상인 그러한 입자크기를 갖는 것을 특징으로 하는 제조방법.
  3. 제1항에 있어서, 미립자 지르코니아는 증기화된 지르코늄 테트라클로라이드의 증기상 산화반응에 의해 생성되며, 생성된 지르코니아는 BET 질소 흡착법에 의해 측정된 바와같이 그램당 10-20 제곱미터의 특정 표면적을 갖는 것을 특징으로 하는 제조방법.
  4. 제1항에 있어서, 미립자 안정화제는 BET 질소 흡착법에 의해 측정된 바와같이 안정화제의 특정 표면적이 그램당 1제곱미터 이상인 그러한 입자크기를 갖는 것을 특징으로 하는 제조방법.
  5. 제1항에 있어서, 현탁물내의 미립자 물질의 평균입자 크기를 감소시키도록 선택된 기간동안 현탁물을 교반하여 안정화제의 90중량% 이상이 상기 기간 종말에 2마이크로미터 이하의 크기를 갖도록 하는 것을 특징으로 하는 제조방법.
  6. 제1항에 있어서, 미립자 혼합 매개물은 0.6㎜-1.2㎜의 평균 입자크기를 갖는 것을 특징으로 하는 제조방법.
  7. 제1항에 있어서, 미립자 혼합 매개물은 이트리아 스태빌라이즈드 지르코니아(yttria stabilised zirconia)로부터 형성된 세라믹비드인 것을 특징으로 하는 제조방법.
  8. 제1항에 있어서, 현탁물은 5-30분동안 비드 밀내에서 교반되는 것을 특징으로 하는 제조방법.
  9. 제1항에 있어서, 안정화제는 이트리움 옥사이드이며 지르코니아에 대하여 3.5-15중량%의 량으로 존재하는 것을 특징으로 하는 제조방법.
  10. 제1항에 있어서, 안정화제는 세륨 옥사이드이며 지르코니아에 대하여 3-24중량%의 량으로 존재하는 것을 특징으로 하는 제조방법.
  11. 제1항에 있어서, 안정화제는 세륨 옥사이드 또는 마그네슘 옥사이드이며 지르코니아에 대하여 1-8중량%의 량으로 존재하는 것을 특징으로 하는 제조방법.
  12. 제1항에 있어서, 비드 밀은 분당 1000-6000 회전의 속도로 작동되는 것을 특징으로 하는 제조방법.
  13. 제1항에 있어서, 분산제를 수성 현탁물에 첨가하는 것을 특징으로 하는 제조방법.
  14. 제1항에 있어서, 수성 현탁물을 1회 이상 비드 밀을 통과시키거나 또는 1개 이상의 비드 밀내에서 교반시키는 것을 특징으로 하는 제조방법.
  15. 제1항에 있어서, 지르코니아 및 안정화제의 건성 혼합물은 수성 슬러리를 비드 빌로부터 분무건조기로 통과시킴에 의해 형성되는 것을 특징으로하는 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940002158A 1993-02-13 1994-02-05 혼합분말의제조방법 KR100287593B1 (ko)

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GB939302911A GB9302911D0 (en) 1993-02-13 1993-02-13 Preparation of mixed powders
GB9302911.4 1993-02-13

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EP (1) EP0611738B1 (ko)
JP (1) JPH06277479A (ko)
KR (1) KR100287593B1 (ko)
AU (1) AU668252B2 (ko)
CA (1) CA2113596A1 (ko)
DE (1) DE69400585T2 (ko)
GB (1) GB9302911D0 (ko)

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Publication number Priority date Publication date Assignee Title
GB2299579A (en) * 1995-04-01 1996-10-09 Tioxide Specialties Ltd Water resistant ceramic articles
US7510758B2 (en) 2002-11-12 2009-03-31 Kimberly-Clark Worldwide, Inc. Breathable elastic multilayer film laminate and method of making a breathable elastic multilayer film laminate
KR101466967B1 (ko) * 2012-06-13 2014-12-15 한국과학기술연구원 내식성이 향상된 다성분계 열용사용 코팅물질, 그 제조방법 및 코팅방법
WO2019073835A1 (ja) * 2017-10-12 2019-04-18 東レ株式会社 メディア型分散機および液状分散物の製造方法
CN112341212A (zh) * 2020-11-03 2021-02-09 常州市卓群纳米新材料有限公司 一种纳米级碳化硅陶瓷烧结稳定剂及其制备方法

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NZ226551A (en) * 1987-10-20 1990-03-27 Ici Australia Operations Fine grinding of ceramic particles in attrition mill
WO1990003838A1 (en) * 1988-10-13 1990-04-19 Ici Australia Operations Proprietary Limited Ceramic powders
US5130210A (en) * 1989-08-25 1992-07-14 Tonen Corporation Stabilized zirconia solid electrolyte and process for preparation thereof
JPH03146454A (ja) * 1989-10-30 1991-06-21 Kurosaki Refract Co Ltd セラミック微粉末及び耐火物の製造方法
GB9026952D0 (en) * 1990-12-12 1991-01-30 Tioxide Group Services Ltd Stabilised metal oxides

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GB9302911D0 (en) 1993-03-31
EP0611738B1 (en) 1996-09-25
JPH06277479A (ja) 1994-10-04
KR100287593B1 (ko) 2001-04-16
AU5384494A (en) 1994-08-18
CA2113596A1 (en) 1994-08-14
AU668252B2 (en) 1996-04-26
DE69400585T2 (de) 1997-02-06
EP0611738A1 (en) 1994-08-24
DE69400585D1 (de) 1996-10-31

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