FR2221421A1 - Silicon oxynitride refractories mfr. - by mixing with metal oxides, compacting and sintering at high temp. - Google Patents

Silicon oxynitride refractories mfr. - by mixing with metal oxides, compacting and sintering at high temp.

Info

Publication number
FR2221421A1
FR2221421A1 FR7309345A FR7309345A FR2221421A1 FR 2221421 A1 FR2221421 A1 FR 2221421A1 FR 7309345 A FR7309345 A FR 7309345A FR 7309345 A FR7309345 A FR 7309345A FR 2221421 A1 FR2221421 A1 FR 2221421A1
Authority
FR
France
Prior art keywords
mixing
metal oxides
refractories
mfr
compacting
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
FR7309345A
Other languages
French (fr)
Other versions
FR2221421B3 (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.)
Bpifrance Financement SA
Original Assignee
Agence National de Valorisation de la Recherche ANVAR
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 Agence National de Valorisation de la Recherche ANVAR filed Critical Agence National de Valorisation de la Recherche ANVAR
Priority to FR7309345A priority Critical patent/FR2221421A1/en
Publication of FR2221421A1 publication Critical patent/FR2221421A1/en
Application granted granted Critical
Publication of FR2221421B3 publication Critical patent/FR2221421B3/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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/597—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon oxynitride, e.g. SIALONS
    • 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
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/584—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride

Abstract

The process consists of (a) mixing Si2N2O powder with a refractory metal oxide; (b) pressing the mixt. to form a compact; (c) coating the compact with Si2N2O powder; (d) heating to 1250-1850 degrees C; and (e) removing the very brittle coating formed by (c). The pref. metal oxides are those of Mg, Ca, Al, Be, Y in the amt. of 0.1-10, esp. 5%.
FR7309345A 1973-03-15 1973-03-15 Silicon oxynitride refractories mfr. - by mixing with metal oxides, compacting and sintering at high temp. Granted FR2221421A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7309345A FR2221421A1 (en) 1973-03-15 1973-03-15 Silicon oxynitride refractories mfr. - by mixing with metal oxides, compacting and sintering at high temp.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7309345A FR2221421A1 (en) 1973-03-15 1973-03-15 Silicon oxynitride refractories mfr. - by mixing with metal oxides, compacting and sintering at high temp.

Publications (2)

Publication Number Publication Date
FR2221421A1 true FR2221421A1 (en) 1974-10-11
FR2221421B3 FR2221421B3 (en) 1976-03-12

Family

ID=9116363

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7309345A Granted FR2221421A1 (en) 1973-03-15 1973-03-15 Silicon oxynitride refractories mfr. - by mixing with metal oxides, compacting and sintering at high temp.

Country Status (1)

Country Link
FR (1) FR2221421A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2412510A1 (en) * 1977-12-23 1979-07-20 Fiat Spa PROCESS FOR SINTERING COMPRESSED SILICON NITRIDE ARTICLES
US4179486A (en) * 1978-07-21 1979-12-18 Rockwell International Corporation Method of protecting Si3 N4 ceramic alloy during heating
US4552711A (en) * 1983-06-21 1985-11-12 Cornell Research Foundation, Inc. Use of free silicon in liquid phase sintering of silicon nitrides and sialons

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4038092A (en) 1976-01-30 1977-07-26 Norton Company Strengthening reaction sintered silicon nitride
US4331771A (en) 1980-05-12 1982-05-25 Norton Company High density silicon oxynitride

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2412510A1 (en) * 1977-12-23 1979-07-20 Fiat Spa PROCESS FOR SINTERING COMPRESSED SILICON NITRIDE ARTICLES
US4179486A (en) * 1978-07-21 1979-12-18 Rockwell International Corporation Method of protecting Si3 N4 ceramic alloy during heating
US4552711A (en) * 1983-06-21 1985-11-12 Cornell Research Foundation, Inc. Use of free silicon in liquid phase sintering of silicon nitrides and sialons

Also Published As

Publication number Publication date
FR2221421B3 (en) 1976-03-12

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