FR2056484A5 - Silicon nitride powder - Google Patents

Silicon nitride powder

Info

Publication number
FR2056484A5
FR2056484A5 FR7028071A FR7028071A FR2056484A5 FR 2056484 A5 FR2056484 A5 FR 2056484A5 FR 7028071 A FR7028071 A FR 7028071A FR 7028071 A FR7028071 A FR 7028071A FR 2056484 A5 FR2056484 A5 FR 2056484A5
Authority
FR
France
Prior art keywords
oven
silicon nitride
temp
bed
nitride 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.)
Expired
Application number
FR7028071A
Other languages
French (fr)
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries 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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Application granted granted Critical
Publication of FR2056484A5 publication Critical patent/FR2056484A5/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
    • C01B21/068—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with silicon
    • C01B21/0682—Preparation by direct nitridation of silicon
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Ceramic Products (AREA)

Abstract

A bed of silicon powder is heated in an oven having an N2 contg. atmosphere. The temp. in the bed is measured and compared with that at another point in the oven. The oven conditions are regulated according to the temp. difference so as to ensure that the temp. in the bed does not exceed a specified valve, above which beta-silicon nitride is formed. Specifically the oven conditions are regulated by removing the heat source from the oven, rarifyng the nitrogen in the atm. in the oven by reducing the pressure in the oven.
FR7028071A 1969-07-28 1970-07-23 Silicon nitride powder Expired FR2056484A5 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3771769 1969-07-28
GB3771869 1969-07-28

Publications (1)

Publication Number Publication Date
FR2056484A5 true FR2056484A5 (en) 1971-05-14

Family

ID=26263551

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7028071A Expired FR2056484A5 (en) 1969-07-28 1970-07-23 Silicon nitride powder

Country Status (8)

Country Link
JP (1) JPS5525126B1 (en)
AT (1) AT308047B (en)
CA (1) CA934933A (en)
CH (1) CH542786A (en)
DE (1) DE2036740C3 (en)
FR (1) FR2056484A5 (en)
NL (1) NL7010941A (en)
SE (1) SE367994B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1431780A (en) * 1972-10-06 1976-04-14 Lucas Industries Ltd Manufacture of silicon nitride products
JPH0733411A (en) * 1993-07-16 1995-02-03 Shin Etsu Chem Co Ltd Production of silicon nitride powder having high alpha-silicon nitride content
CN115417387B (en) * 2022-10-11 2023-07-18 新疆晶硕新材料有限公司 Silicon nitride production process control method, device and equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1119573B (en) * 1960-11-11 1961-12-14 Heraeus Gmbh W C Temperature regulator for ovens, especially for stoves
FR1545415A (en) * 1967-11-27 1968-11-08 Lucas Industries Ltd Process for preparing silicon nitride products and products obtained

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1119573B (en) * 1960-11-11 1961-12-14 Heraeus Gmbh W C Temperature regulator for ovens, especially for stoves
FR1545415A (en) * 1967-11-27 1968-11-08 Lucas Industries Ltd Process for preparing silicon nitride products and products obtained

Also Published As

Publication number Publication date
JPS5525126B1 (en) 1980-07-03
DE2036740A1 (en) 1971-02-18
CH542786A (en) 1973-10-15
DE2036740C3 (en) 1980-02-07
AT308047B (en) 1973-06-25
SE367994B (en) 1974-06-17
NL7010941A (en) 1971-02-01
DE2036740B2 (en) 1979-06-13
CA934933A (en) 1973-10-09

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Legal Events

Date Code Title Description
ST Notification of lapse