IE39632B1 - Production of high-density boron nitride - Google Patents

Production of high-density boron nitride

Info

Publication number
IE39632B1
IE39632B1 IE1553/74A IE155374A IE39632B1 IE 39632 B1 IE39632 B1 IE 39632B1 IE 1553/74 A IE1553/74 A IE 1553/74A IE 155374 A IE155374 A IE 155374A IE 39632 B1 IE39632 B1 IE 39632B1
Authority
IE
Ireland
Prior art keywords
boron nitride
density boron
density
production
crystals
Prior art date
Application number
IE1553/74A
Other versions
IE39632L (en
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of IE39632L publication Critical patent/IE39632L/en
Publication of IE39632B1 publication Critical patent/IE39632B1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/06—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies
    • B01J3/08—Application of shock waves for chemical reactions or for modifying the crystal structure of substances
    • 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
    • C01B21/064—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 boron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2203/00—Processes utilising sub- or super atmospheric pressure
    • B01J2203/06—High pressure synthesis
    • B01J2203/065—Composition of the material produced
    • B01J2203/066—Boronitrides
    • 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
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/10—Solid density
    • 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
    • C01P2006/21—Attrition-index or crushing strength of granulates

Abstract

A process is described for preparing high-density boron nitride crystals from low-density boron nitride crystals for use as abrasive particles. The process starts from recrystallised, pyrolytic boron nitride. This is subjected to a dynamic shock treatment in such a way that pressure and temperature conditions are generated therein, in which the high-density boron nitride modification is stable. The high-density boron nitride particles thus obtained have a particle size of at least 50 mu m. <IMAGE> [GB1481091A]
IE1553/74A 1973-09-06 1974-07-22 Production of high-density boron nitride IE39632B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US39463273A 1973-09-06 1973-09-06

Publications (2)

Publication Number Publication Date
IE39632L IE39632L (en) 1975-03-06
IE39632B1 true IE39632B1 (en) 1978-11-22

Family

ID=23559768

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1553/74A IE39632B1 (en) 1973-09-06 1974-07-22 Production of high-density boron nitride

Country Status (13)

Country Link
JP (1) JPS5516087B2 (en)
AT (1) AT375895B (en)
BE (1) BE818940A (en)
CA (1) CA1006328A (en)
CH (1) CH608769A5 (en)
DE (1) DE2441299C2 (en)
FR (1) FR2243150B1 (en)
GB (1) GB1481091A (en)
IE (1) IE39632B1 (en)
IT (1) IT1020282B (en)
NO (2) NO138626C (en)
SE (2) SE413498B (en)
ZA (1) ZA744805B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS608966B2 (en) * 1976-01-26 1985-03-07 株式会社井上ジャパックス研究所 Synthesis method of cubic boron nitride
IN150013B (en) * 1977-07-01 1982-06-26 Gen Electric
WO1982000458A1 (en) * 1980-07-31 1982-02-18 Apollonov V Method of obtaining diamond and/or diamond-like modifications of boron nitride

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1281002A (en) * 1968-06-28 1972-07-12 Du Pont Method of subjecting solids to high dynamic pressures
DE2108452B2 (en) * 1970-02-23 1977-02-24 Showa Denko KiC.; Nippon Oils & Fats Co., Ltd.; Tokio PROCESS FOR THE PRODUCTION OF BORNITRIDE OF THE WURTZITE TYPE
CH580539A5 (en) * 1971-07-19 1976-10-15 I Khim Fiz Akademii Nauk Sssr
JPS517349B2 (en) * 1972-02-29 1976-03-06
JPS5720433B2 (en) * 1973-05-23 1982-04-28

Also Published As

Publication number Publication date
SE7800678L (en) 1978-01-19
FR2243150B1 (en) 1978-07-13
SE413498B (en) 1980-06-02
DE2441299A1 (en) 1975-03-13
IT1020282B (en) 1977-12-20
SE7411252L (en) 1975-03-07
NO138626B (en) 1978-07-03
AT375895B (en) 1984-09-25
AU7224374A (en) 1976-02-12
BE818940A (en) 1974-12-16
CH608769A5 (en) 1979-01-31
SE426813B (en) 1983-02-14
IE39632L (en) 1975-03-06
NO743191L (en) 1975-04-01
NO138626C (en) 1978-10-11
ATA719174A (en) 1984-02-15
JPS5516087B2 (en) 1980-04-28
GB1481091A (en) 1977-07-27
JPS5072899A (en) 1975-06-16
ZA744805B (en) 1975-08-27
FR2243150A1 (en) 1975-04-04
CA1006328A (en) 1977-03-08
NO780260L (en) 1975-03-07
DE2441299C2 (en) 1984-09-27

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