FR2229663A1 - Insulating ceramic having controlled porosity - prepd. by sinter process comprising final sintering without over-pressure - Google Patents

Insulating ceramic having controlled porosity - prepd. by sinter process comprising final sintering without over-pressure

Info

Publication number
FR2229663A1
FR2229663A1 FR7318172A FR7318172A FR2229663A1 FR 2229663 A1 FR2229663 A1 FR 2229663A1 FR 7318172 A FR7318172 A FR 7318172A FR 7318172 A FR7318172 A FR 7318172A FR 2229663 A1 FR2229663 A1 FR 2229663A1
Authority
FR
France
Prior art keywords
mixt
sintering
prepd
over
powder
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
Application number
FR7318172A
Other languages
French (fr)
Other versions
FR2229663B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ACTIVITE ATOM AVANCE
Original Assignee
ACTIVITE ATOM AVANCE
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 ACTIVITE ATOM AVANCE filed Critical ACTIVITE ATOM AVANCE
Priority to FR7318172A priority Critical patent/FR2229663A1/en
Priority to CH603574A priority patent/CH588426A5/xx
Priority to AU68555/74A priority patent/AU498289B2/en
Priority to CA199,582A priority patent/CA1028363A/en
Priority to DE2422416A priority patent/DE2422416A1/en
Priority to GB2158774A priority patent/GB1438602A/en
Priority to NO741794A priority patent/NO143151C/en
Priority to JP49053953A priority patent/JPS5048004A/ja
Priority to SU742029248A priority patent/SU679126A3/en
Publication of FR2229663A1 publication Critical patent/FR2229663A1/en
Priority to US05/793,341 priority patent/US4119469A/en
Application granted granted Critical
Publication of FR2229663B1 publication Critical patent/FR2229663B1/fr
Granted legal-status Critical Current

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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation 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
    • 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
    • C04B35/03—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
    • C04B35/057—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on calcium 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
    • C04B35/01—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
    • C04B35/08—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 beryllium 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
    • C04B35/01—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
    • C04B35/50—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds
    • 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
    • C04B35/50—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds
    • C04B35/505—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds based on yttrium 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
    • C04B35/64—Burning or sintering processes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Composite Materials (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Powder Metallurgy (AREA)

Abstract

Insulating ceramics passive to molten corrosive metals, e.g. Al and steel, and resistant to repeated heat-shocks, are prepd. by (1) mixing finely powdered oxides of Gp. III and Gp. IV elements, (2) sintering pt. of powder mixt. under high temp. and press., (3) comminuting sintered matl., (4) mixing comminuted matl. with balance of powder, (5) stirring after adding 0.1-6 wt.% Gp. IA fluoride, and (6) quickly vibrating in a mould, followed by (7) sintering vibrated mixt. without over-press. for 1 to several hrs. at 850-1350 degrees C under a controlled atmos. pref. H2 or a neutral atmos. Porosity of ceramic can be increased by admixing finely powdered mixt. before sintering with >35 wt.% (w.r.t. total mixt) compact grains of Gp. III and IV oxides. Specif. grains and fine powder consists of same oxide, pref. Al2O3, have French standard screen mesh sizes 22 and 17 resp. and are sintered in air at 1350 degrees C.
FR7318172A 1973-05-18 1973-05-18 Insulating ceramic having controlled porosity - prepd. by sinter process comprising final sintering without over-pressure Granted FR2229663A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
FR7318172A FR2229663A1 (en) 1973-05-18 1973-05-18 Insulating ceramic having controlled porosity - prepd. by sinter process comprising final sintering without over-pressure
AU68555/74A AU498289B2 (en) 1973-05-18 1974-05-03 Porous insulating sintered ceramic substances
CH603574A CH588426A5 (en) 1973-05-18 1974-05-03
DE2422416A DE2422416A1 (en) 1973-05-18 1974-05-09 INSULATING CERAMICS WITH CONTROLLED POROSITY AND SINTER MANUFACTURING PROCESS
CA199,582A CA1028363A (en) 1973-05-18 1974-05-09 Controlled porosity insulating ceramics and related sintering process
GB2158774A GB1438602A (en) 1973-05-18 1974-05-15 Method of preparing ceramic substances by sintering
NO741794A NO143151C (en) 1973-05-18 1974-05-16 PROCEDURE FOR THE MANUFACTURE OF CERAMIC INSULATION MATERIAL
JP49053953A JPS5048004A (en) 1973-05-18 1974-05-16
SU742029248A SU679126A3 (en) 1973-05-18 1974-05-17 Method of manufacturing ceramic articles
US05/793,341 US4119469A (en) 1973-05-18 1977-05-03 Insulating ceramic substances having controlled porosity and the method for preparing them by sintering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7318172A FR2229663A1 (en) 1973-05-18 1973-05-18 Insulating ceramic having controlled porosity - prepd. by sinter process comprising final sintering without over-pressure

Publications (2)

Publication Number Publication Date
FR2229663A1 true FR2229663A1 (en) 1974-12-13
FR2229663B1 FR2229663B1 (en) 1980-05-09

Family

ID=9119579

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7318172A Granted FR2229663A1 (en) 1973-05-18 1973-05-18 Insulating ceramic having controlled porosity - prepd. by sinter process comprising final sintering without over-pressure

Country Status (2)

Country Link
FR (1) FR2229663A1 (en)
SU (1) SU679126A3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0135773A2 (en) * 1983-08-18 1985-04-03 The J.E. Baker Company Low temperature bonding of refractory aggregates and refractory products of improved cold strength
EP0191053A1 (en) * 1984-07-23 1986-08-20 Norton Company Refractory cement
EP0739865A1 (en) * 1995-04-24 1996-10-30 Asulab S.A. Sintered zirconia-based article and process for its preparation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0135773A2 (en) * 1983-08-18 1985-04-03 The J.E. Baker Company Low temperature bonding of refractory aggregates and refractory products of improved cold strength
EP0135773A3 (en) * 1983-08-18 1985-10-02 The J.E. Baker Company Low temperature bonding of refractory aggregates and refractory products of improved cold strength
EP0191053A1 (en) * 1984-07-23 1986-08-20 Norton Company Refractory cement
EP0191053A4 (en) * 1984-07-23 1988-04-06 Norton Co Refractory cement.
EP0739865A1 (en) * 1995-04-24 1996-10-30 Asulab S.A. Sintered zirconia-based article and process for its preparation

Also Published As

Publication number Publication date
FR2229663B1 (en) 1980-05-09
SU679126A3 (en) 1979-08-05

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