KR950023467A - Method for preparing alumina-zirconia composite powder - Google Patents

Method for preparing alumina-zirconia composite powder Download PDF

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KR950023467A
KR950023467A KR1019940001775A KR19940001775A KR950023467A KR 950023467 A KR950023467 A KR 950023467A KR 1019940001775 A KR1019940001775 A KR 1019940001775A KR 19940001775 A KR19940001775 A KR 19940001775A KR 950023467 A KR950023467 A KR 950023467A
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South Korea
Prior art keywords
alumina
zirconia
zirconium salt
zirconia composite
hydrate
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KR1019940001775A
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Korean (ko)
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KR960012722B1 (en
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김승의
김동환
류기홍
황강선
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김홍기
금호석유화학 주식회사
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Publication of KR950023467A publication Critical patent/KR950023467A/en
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Publication of KR960012722B1 publication Critical patent/KR960012722B1/en

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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
    • C04B35/01—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
    • C04B35/10—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 aluminium oxide
    • 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
    • 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
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
    • C04B2103/0094—Agents for altering or buffering the pH; Ingredients characterised by their pH
    • 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
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
    • C04B2235/3225—Yttrium oxide 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
    • C04B2235/3244—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
    • C04B2235/40—Metallic constituents or additives not added as binding phase
    • C04B2235/402—Aluminium

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

본 발명은 내열성, 내마모성, 내식성이 우수하여 세라믹 구조재료로서 사용되는 알루미나-지르코니아 복합본체의 제조방법에 관한 것이다.The present invention relates to a method for producing an alumina-zirconia composite body which is used as a ceramic structural material due to its excellent heat resistance, abrasion resistance and corrosion resistance.

본 발명은 지르코니아 공급원으로써 지르코늄염을 사용하였으나 알루미나 공급원으로써는 기존의 출발물질과는 달리 금속 알루미늄 분말을 사용하는 것이 특징이며, 상기한 지르코늄염을 90℃의 수용액에 용해시킨후 알루미늄 분말을 첨가하여 교반하면 알루미늄 분말이 수화되면서 수용액의 pH를 증가시켜 지르코늄염과 동시에 수화되고, 이들의 수화를 촉진시키기 위하여 요소와 암모니아수를 첨가하면 균일하게 혼합된 gel상의 알루미나-지르코니아 수화물이 제조되며 상기한 방법으로 제조한 수화물을 하소와 서형을 거쳐 소결처리하여 고강도의 알루미나-지르코니아 소결체를 제조할 수 있다.The present invention uses a zirconium salt as a zirconia source, but as an alumina source, it is characterized by using a metal aluminum powder, unlike the conventional starting materials, by dissolving the zirconium salt in an aqueous solution at 90 ℃ and adding aluminum powder When stirred, the aluminum powder is hydrated and the pH of the aqueous solution is increased to hydrate simultaneously with the zirconium salt.To promote their hydration, urea and ammonia water are added to prepare a uniformly mixed gel-like alumina-zirconia hydrate. The prepared hydrate is calcined and subjected to sintering to form a high strength alumina-zirconia sintered body.

Description

알루미나-지르코니아 복합 본체의 제조방법Manufacturing method of alumina-zirconia composite body

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 알루미나-지르코니아 복합본체의 제조 공정도.1 is a manufacturing process diagram of the alumina-zirconia composite body.

Claims (3)

알루미나-지르코니아 복합본체의 제조하는 방법에 있어서, 약 90℃의 지르코늄염 수용액에 지르코늄염에 대하여 약 50중량부의 금속 알루미늄 분말을 첨가시켜 혼합용액을 제조한후, 여기에 요소를 첨가하여 pH를 4∼6으로 조절하고, 수용액의 온도를 약 60℃로 내린후 여기에, 암모니아수를 첨가하여 pH를 9∼10으로 조절하여 알루미나-지르코니아 수화물을 생성시키고, 이 수화물을 400℃∼1200℃에서 하소하여 알루미나-지르코니아 복합분체를 제조하는 방법.In the method for producing an alumina-zirconia composite body, a mixed solution is prepared by adding about 50 parts by weight of metal aluminum powder to a zirconium salt solution at about 90 ° C., and then adding urea thereto to obtain a pH of 4 The temperature of the aqueous solution was lowered to about 60 DEG C, and then ammonia water was added thereto to adjust the pH to 9-10 to produce an alumina-zirconia hydrate, which was calcined at 400 DEG C to 1200 DEG C. Method for preparing alumina-zirconia composite powder. 제1항에 있어서, 지르코늄 염이 ZrOCl2, Zr(NO3)4, Zr(SO4)2인 알루미나-지르코니아 복합분체를 제조하는 방법.The method of preparing an alumina-zirconia composite powder according to claim 1, wherein the zirconium salt is ZrOCl 2 , Zr (NO 3 ) 4 , Zr (SO 4 ) 2 . 제1항에 있어서, 지르코늄염과 함께 Y2O3, MgO, CaO, BaO, CeO2를 첨가하여 알루미나-지르코니아 복합분체를 제조하는 방법.The method of claim 1, wherein the alumina-zirconia composite powder is prepared by adding Y 2 O 3 , MgO, CaO, BaO, CeO 2 together with a zirconium salt. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940001775A 1994-01-31 1994-01-31 Process for preparing composite powder of zirconia-alumina KR960012722B1 (en)

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Application Number Priority Date Filing Date Title
KR1019940001775A KR960012722B1 (en) 1994-01-31 1994-01-31 Process for preparing composite powder of zirconia-alumina

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940001775A KR960012722B1 (en) 1994-01-31 1994-01-31 Process for preparing composite powder of zirconia-alumina

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KR950023467A true KR950023467A (en) 1995-08-18
KR960012722B1 KR960012722B1 (en) 1996-09-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100473399B1 (en) * 2002-02-01 2005-03-08 주식회사 엠스 Process for the preparation of fine ceramic powders

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ298538B6 (en) * 2003-10-14 2007-10-31 Vysoká škola chemicko-technologická v Praze Oxide mixture aqueous suspension for preparing ceramic layers of defined roughness using spraying method
KR101424089B1 (en) * 2014-03-14 2014-07-28 주식회사 에코인프라홀딩스 Method for preparing heat-dissipating graphene coating material having conductivity using sol-gel method and graphene oxide and heat-dissipating graphene coating material having conductivity prepared by the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100473399B1 (en) * 2002-02-01 2005-03-08 주식회사 엠스 Process for the preparation of fine ceramic powders

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