ZA919760B - Stabilised metal oxides - Google Patents

Stabilised metal oxides

Info

Publication number
ZA919760B
ZA919760B ZA919760A ZA919760A ZA919760B ZA 919760 B ZA919760 B ZA 919760B ZA 919760 A ZA919760 A ZA 919760A ZA 919760 A ZA919760 A ZA 919760A ZA 919760 B ZA919760 B ZA 919760B
Authority
ZA
South Africa
Prior art keywords
zirconia
ceramics
hydrous
neodymium
lanthanum
Prior art date
Application number
ZA919760A
Other languages
English (en)
Inventor
Graham Paul Dransfield
Paul Dransfield Graham
Paul Mccolgan
Mccolgan Paul
Original Assignee
Tioxide Group Services Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tioxide Group Services Ltd filed Critical Tioxide Group Services Ltd
Publication of ZA919760B publication Critical patent/ZA919760B/xx

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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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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
    • C04B35/626—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
    • C04B35/628—Coating the powders or the macroscopic reinforcing agents
    • C04B35/62802—Powder coating materials
    • C04B35/62805—Oxide ceramics
    • C04B35/62815—Rare earth metal oxides
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G25/00—Compounds of zirconium
    • C01G25/02—Oxides
    • 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
    • C04B35/628—Coating the powders or the macroscopic reinforcing agents
    • C04B35/62802—Powder coating materials
    • C04B35/62805—Oxide ceramics
    • C04B35/62813—Alumina or aluminates
    • 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
    • C04B35/628—Coating the powders or the macroscopic reinforcing agents
    • C04B35/62802—Powder coating materials
    • C04B35/62805—Oxide ceramics
    • C04B35/62818—Refractory metal oxides
    • C04B35/62821—Titanium 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
    • C04B35/628—Coating the powders or the macroscopic reinforcing agents
    • C04B35/62802—Powder coating materials
    • C04B35/62805—Oxide ceramics
    • C04B35/62818—Refractory metal oxides
    • C04B35/62823—Zirconium or hafnium oxide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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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
    • C04B35/626—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
    • C04B35/628—Coating the powders or the macroscopic reinforcing agents
    • C04B35/62886—Coating the powders or the macroscopic reinforcing agents by wet chemical techniques
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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
    • C04B35/626—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
    • C04B35/628—Coating the powders or the macroscopic reinforcing agents
    • C04B35/62894—Coating the powders or the macroscopic reinforcing agents with more than one coating layer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
    • C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
    • C01P2004/84—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases one phase coated with the other
    • 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
    • C01P2006/10—Solid density
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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
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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
    • C04B2235/3227—Lanthanum 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
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
    • C04B2235/3229—Cerium oxides or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • 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
    • C04B2235/3231—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
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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
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5445—Particle size related information expressed by the size of the particles or aggregates thereof submicron sized, i.e. from 0,1 to 1 micron
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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
    • C04B2235/72—Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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    • C04B2235/74—Physical characteristics
    • C04B2235/77—Density
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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)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Composite Materials (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Catalysts (AREA)
  • Saccharide Compounds (AREA)
  • Inorganic Insulating Materials (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Glass Compositions (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
  • Contacts (AREA)
  • Glanulating (AREA)
ZA919760A 1990-12-12 1991-12-11 Stabilised metal oxides ZA919760B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB909026952A GB9026952D0 (en) 1990-12-12 1990-12-12 Stabilised metal oxides

Publications (1)

Publication Number Publication Date
ZA919760B true ZA919760B (en) 1992-09-30

Family

ID=10686876

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA919760A ZA919760B (en) 1990-12-12 1991-12-11 Stabilised metal oxides

Country Status (10)

Country Link
US (1) US5206192A (de)
EP (1) EP0490500B1 (de)
JP (1) JPH04295014A (de)
KR (1) KR920011960A (de)
AT (1) ATE115520T1 (de)
AU (1) AU648605B2 (de)
CA (1) CA2055725A1 (de)
DE (1) DE69105934T2 (de)
GB (2) GB9026952D0 (de)
ZA (1) ZA919760B (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9123280D0 (en) * 1991-11-02 1991-12-18 Tioxide Group Services Ltd Metallic oxides
GB9302911D0 (en) * 1993-02-13 1993-03-31 Tioxide Specialties Ltd Preparation of mixed powders
JP2703207B2 (ja) * 1995-01-30 1998-01-26 松下電工株式会社 ジルコニア系複合セラミック焼結体及びその製法
GB2305430B (en) * 1995-09-21 1997-08-27 Matsushita Electric Works Ltd Zirconia based ceramic material and process of making the same
DE19654391A1 (de) 1996-12-27 1998-07-02 Basf Ag Katalysator zur selektiven Herstellung von Propylen aus Propan
KR20020004130A (ko) * 2000-07-03 2002-01-16 이종국 열 안정성이 우수한 세리아 안정화 지르코니아의 제조법
JP3797313B2 (ja) 2002-10-28 2006-07-19 トヨタ自動車株式会社 金属酸化物粒子の製造法及び排ガス浄化用触媒
FR2867769B1 (fr) * 2004-03-17 2006-05-05 Rhodia Chimie Sa Composition a base d'oxydes de zirconium, de cerium et d'etain, preparation et utilisation comme catalyseur
WO2006024098A1 (en) * 2004-09-01 2006-03-09 Advanced Nanotechnology Limited A zirconia ceramic
US20070197373A1 (en) * 2005-04-27 2007-08-23 Toyota Jidosha Kabushiki Kaisha Zirconia core particles coated with ceria particles, production process thereof and exhaust gas purifying catalyst
EP2157067B1 (de) * 2008-07-30 2012-09-12 Ivoclar Vivadent AG Mit einer farbgebenden Komponente beschichtete Primärpartikel

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3957500A (en) * 1971-06-29 1976-05-18 Magnesium Elektron Limited Stabilised zirconia and a process for the preparation thereof
JPS627667A (ja) * 1985-07-03 1987-01-14 第一稀元素化学工業株式会社 アルミナ含有部分安定化ジルコニア焼結体およびその製造方法
GB8524140D0 (en) * 1985-10-01 1985-11-06 Tioxide Group Plc Stabilised metallic oxides
FR2590887B1 (fr) * 1985-12-02 1990-09-07 Rhone Poulenc Spec Chim Composition a base d'oxyde de zirconium et procede de preparation
EP0262579B1 (de) * 1986-09-27 1992-04-01 Nissan Chemical Industries Ltd. Verfahren zur Herstellung von feinem Zirkonoxydpulver
JPS63139050A (ja) * 1986-11-28 1988-06-10 住友化学工業株式会社 ジルコニア質セラミツクス
GB8709515D0 (en) * 1987-04-22 1987-05-28 Tioxide Group Plc Stabilised metallic oxides
GB2206111B (en) * 1987-06-24 1991-08-14 Council Scient Ind Res Sintered ceramic product
JPH01201075A (ja) * 1988-02-05 1989-08-14 Toshiba Corp ジルコニア系セラミックス
US4891343A (en) * 1988-08-10 1990-01-02 W. R. Grace & Co.-Conn. Stabilized zirconia
JPH02137728A (ja) * 1988-11-18 1990-05-28 Ricoh Co Ltd 酸化ジルコニウム微粒子及びその製造方法
JPH02175602A (ja) * 1988-12-28 1990-07-06 Ricoh Co Ltd 超微粒子状金属酸化物組成物の製法及びそれによって得られた超微粒子状酸化ジルコニウム組成物
ATE96127T1 (de) * 1989-05-02 1993-11-15 Lonza Ag Sinterfaehiges zirkonoxidpulver und verfahren zu seiner herstellung.
GB8912838D0 (en) * 1989-06-03 1989-07-19 Tioxide Group Plc Stabilized metal oxide powder compositions

Also Published As

Publication number Publication date
KR920011960A (ko) 1992-07-25
GB2250735A (en) 1992-06-17
GB2250735B (en) 1994-12-07
EP0490500B1 (de) 1994-12-14
DE69105934D1 (de) 1995-01-26
ATE115520T1 (de) 1994-12-15
AU648605B2 (en) 1994-04-28
DE69105934T2 (de) 1995-05-04
EP0490500A1 (de) 1992-06-17
AU8796191A (en) 1992-06-18
GB9124469D0 (en) 1992-01-08
CA2055725A1 (en) 1992-06-13
US5206192A (en) 1993-04-27
GB9026952D0 (en) 1991-01-30
JPH04295014A (ja) 1992-10-20

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