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BR9902640A - Processo para a fabricação de camadas ceramicas, limitadoras de difusão, assim como o emprego destas camadas - Google Patents

Processo para a fabricação de camadas ceramicas, limitadoras de difusão, assim como o emprego destas camadas

Info

Publication number
BR9902640A
BR9902640A BR9902640-6A BR9902640A BR9902640A BR 9902640 A BR9902640 A BR 9902640A BR 9902640 A BR9902640 A BR 9902640A BR 9902640 A BR9902640 A BR 9902640A
Authority
BR
Brazil
Prior art keywords
layers
powder
oxiceramic
region
diffusion
Prior art date
Application number
BR9902640-6A
Other languages
English (en)
Inventor
Barbara Roth
Volker Brueser
Ulrich Dr Guth
Original Assignee
Heraeus Electro Nite Int
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 Heraeus Electro Nite Int filed Critical Heraeus Electro Nite Int
Publication of BR9902640A publication Critical patent/BR9902640A/pt

Links

Classifications

    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • 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
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/4582—Porous coatings, e.g. coating containing porous fillers
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/403—Cells and electrode assemblies
    • G01N27/406—Cells and probes with solid electrolytes
    • G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/403—Cells and electrode assemblies
    • G01N27/406—Cells and probes with solid electrolytes
    • G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
    • G01N27/4071—Cells and probes with solid electrolytes for investigating or analysing gases using sensor elements of laminated structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Manufacturing & Machinery (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Fuel Cell (AREA)
  • Inert Electrodes (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)
  • Measuring Oxygen Concentration In Cells (AREA)

Abstract

Patente de Invenção: <B>"PROCESSO PARA A FABRICAçãO DE CAMADAS CERAMICAS, LIMITADORAS DE DIFUSãO, ASSIM COMO O EMPREGO DESTAS CAMADAS"<D>. As camadas cerâmicas porosas que também atuam como limitadoras de difusão são, por regra geral, fabricadas pela adição de formadores de poros específicos ao material cerâmico sintetizado. A camada de porosidade aí obtida situa-se na região micrométrica. Os métodos conhecidos para a fabricação de tais camadas estão previstos para a aplicação em substratos planares. A adequação para superfícies esféricas e uma porosidade da camada na região de nanómetros são estabelecidos por um processo, de acordo com a presente invenção, onde um pó oxicerâmico com uma superfície específica na região de 5 a 50 m^ 2^/g e com um tamanho médio de partículas primárias de 20 a 450 nm são previamente submetidos a um tratamento térmico na faixa de temperaturas entre 800 C e 1150 C e em seguida são misturados com o pó oxicerâmico não-tratado, para em seguida ser aplicada sobre uma base de substrato com alta estabilidade a temperaturas elevadas e queimada em temperaturas na faixa entre 1000 C e 1350 C. Alternadamente, em lugar do pó oxicerâmico previamente submetido a um tratamento térmico pode ser empregado um pó vítreo de recristalização. A faixa de temperaturas de queima situa-se neste caso entre 850 C e 1000 C
BR9902640-6A 1998-06-05 1999-06-04 Processo para a fabricação de camadas ceramicas, limitadoras de difusão, assim como o emprego destas camadas BR9902640A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19825094A DE19825094C1 (de) 1998-06-05 1998-06-05 Verfahren zur Herstellung keramischer, diffusionslimitierender Schichten sowie Verwendung dieser Schichten

Publications (1)

Publication Number Publication Date
BR9902640A true BR9902640A (pt) 2000-09-12

Family

ID=7869969

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9902640-6A BR9902640A (pt) 1998-06-05 1999-06-04 Processo para a fabricação de camadas ceramicas, limitadoras de difusão, assim como o emprego destas camadas

Country Status (6)

Country Link
US (1) US6086948A (pt)
EP (2) EP1462797A3 (pt)
JP (1) JP2000053479A (pt)
KR (1) KR20000005923A (pt)
BR (1) BR9902640A (pt)
DE (2) DE19825094C1 (pt)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10041554C2 (de) * 2000-08-24 2003-02-27 Heraeus Gmbh W C Schichtverbund mit einer Isolationsschicht
DE10119538C2 (de) * 2001-04-21 2003-06-26 Itn Nanovation Gmbh Verfahren zur Beschichtung von Substraten und deren Verwendungen
DE10143837A1 (de) * 2001-09-06 2003-03-27 Itn Nanovation Gmbh Selbstreinigende keramische Schichten für Backöfen und Verfahren zur Herstellung selbstreinigender keramischer Schichten
JP4498727B2 (ja) * 2003-11-27 2010-07-07 日本碍子株式会社 アルミナ焼結体及びその製造方法
JP2005351741A (ja) * 2004-06-10 2005-12-22 Hitachi Ltd 酸素濃度検出素子
WO2007114852A2 (en) * 2005-11-07 2007-10-11 Micropyretics Heaters International, Inc. Materials having an enhanced emissivity and methods for making the same
EP1845073A1 (en) * 2006-04-10 2007-10-17 Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, C.S.G.I Compositions comprising nanoparticles of zirconium hydroxide and/or glass frits for coating ceramic products
EP1950558B1 (en) * 2007-01-16 2019-04-03 NGK Spark Plug Co., Ltd. Gas sensor
EP2263991A1 (en) * 2009-06-19 2010-12-22 Nobel Biocare Services AG Dental application coating
US10047002B2 (en) 2013-07-29 2018-08-14 Mohawk Carpet Company Systems and methods for cleanable and slip resistant tile
JP6359373B2 (ja) * 2013-09-05 2018-07-18 日本特殊陶業株式会社 ガスセンサ素子及びガスセンサ

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5916831B2 (ja) * 1978-07-24 1984-04-18 日産自動車株式会社 膜構造型酸素センサ−の製造方法
DE2945020A1 (de) * 1979-11-08 1981-05-21 Bosch Gmbh Robert Poroese zirkondioxid-keramik
US5310575A (en) * 1987-11-03 1994-05-10 Robert Bosch Gmbh Method of making a porous ceramic protective layer on an electrode of an electrochemical sensor for exposure to hot gas
US4957673A (en) * 1988-02-01 1990-09-18 California Institute Of Technology Multilayer ceramic oxide solid electrolyte for fuel cells and electrolysis cells and method for fabrication thereof
FR2629071B1 (fr) * 1988-03-22 1991-03-15 Produits Refractaires Oxyde de zirconium reactif et sa preparation
JP2617204B2 (ja) * 1988-04-27 1997-06-04 日本特殊陶業株式会社 固体電解質の製造方法
DE4009299A1 (de) * 1989-04-19 1990-10-25 Degussa (alpha)-aluminiumoxid und verfahren zu seiner herstellung
DE4143539C2 (de) * 1990-03-12 1996-09-19 Ngk Insulators Ltd Verfahren zur Herstellung eines elektrochemischen Elements
DE4231966A1 (de) * 1992-09-24 1994-03-31 Bosch Gmbh Robert Planare polarograhische Sonde zur Bestimmung des Lambda-Wertes von Gasgemischen
DE4343315C2 (de) * 1993-12-18 1995-11-02 Bosch Gmbh Robert Verfahren zum Ausbilden eines oder mehrerer Hohlräume oder Poren in oder unter einer Beschichtung eines Keramikkörpers und Verwendung des Verfahrens für die Herstellung planarer Sonden
JP3475548B2 (ja) * 1994-04-19 2003-12-08 株式会社デンソー 層状セラミックス体、並びに酸素センサ及びその製法

Also Published As

Publication number Publication date
EP0963967A1 (de) 1999-12-15
EP1462797A2 (de) 2004-09-29
EP1462797A3 (de) 2004-10-06
JP2000053479A (ja) 2000-02-22
DE59910176D1 (de) 2004-09-16
KR20000005923A (ko) 2000-01-25
DE19825094C1 (de) 1999-11-25
EP0963967B1 (de) 2004-08-11
US6086948A (en) 2000-07-11

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 4A , 5A , 6A E 7A ANUIDADES.