IE42151L - Cubic boron nitride - Google Patents

Cubic boron nitride

Info

Publication number
IE42151L
IE42151L IE751683A IE168375A IE42151L IE 42151 L IE42151 L IE 42151L IE 751683 A IE751683 A IE 751683A IE 168375 A IE168375 A IE 168375A IE 42151 L IE42151 L IE 42151L
Authority
IE
Ireland
Prior art keywords
boron nitride
cubic boron
catalyst
shaped
needle
Prior art date
Application number
IE751683A
Other versions
IE42151B1 (en
Original Assignee
De Beers Ind Diamond
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
Priority claimed from ZA00744812A external-priority patent/ZA744812B/en
Application filed by De Beers Ind Diamond filed Critical De Beers Ind Diamond
Priority to IE1983/78A priority Critical patent/IE42924B1/en
Publication of IE42151L publication Critical patent/IE42151L/en
Publication of IE42151B1 publication Critical patent/IE42151B1/en

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
    • C01B21/064—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
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/24—Nitrogen compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ceramic Products (AREA)
  • Catalysts (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

In order to prepare needle-shaped, cubic boron nitride which is suitable, in particular, for manufacturing grinding discs, a sleeve (12) which is made of hexagonal boron nitride and encircles a catalyst core (10), is arranged in a reaction zone in which the temperature and pressure conditions suitable for forming cubic boron nitride are generated. The mass ratio between the hexagonal boron nitride and the catalyst is in the range of from 10:1 to 3:1. The catalyst used can be a nitride of an alkali or an alkaline earth metal. The needle-shaped, cubic boron nitride particles are used to produce grinding discs. <IMAGE> [GB1505923A]
IE1683/75A 1974-07-29 1975-07-28 Production of cubic boron nitride IE42151B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IE1983/78A IE42924B1 (en) 1974-07-29 1975-07-28 Improvements in lintels

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA00744812A ZA744812B (en) 1974-07-29 1974-07-29 Production of cubic boron nitride
ZA751595 1975-03-14

Publications (2)

Publication Number Publication Date
IE42151L true IE42151L (en) 1976-01-29
IE42151B1 IE42151B1 (en) 1980-06-18

Family

ID=27131106

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1683/75A IE42151B1 (en) 1974-07-29 1975-07-28 Production of cubic boron nitride

Country Status (18)

Country Link
JP (1) JPS5137897A (en)
AR (1) AR209313A1 (en)
AT (1) AT359974B (en)
AU (1) AU498756B2 (en)
BR (1) BR7504828A (en)
CA (1) CA1072296A (en)
CH (1) CH618145A5 (en)
DE (1) DE2531339A1 (en)
ES (1) ES439828A1 (en)
FI (1) FI63203C (en)
FR (1) FR2280583A1 (en)
GB (1) GB1505923A (en)
IE (1) IE42151B1 (en)
IL (1) IL47808A (en)
IN (1) IN143200B (en)
IT (1) IT1044741B (en)
NL (1) NL7508934A (en)
SE (1) SE411443B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5181939A (en) * 1989-12-20 1993-01-26 Charles Neff Article and a method for producing an article having a high friction surface
US5213590A (en) * 1989-12-20 1993-05-25 Neff Charles E Article and a method for producing an article having a high friction surface
JP4183317B2 (en) * 1997-11-25 2008-11-19 昭和電工株式会社 Method for producing cubic boron nitride
US6997790B2 (en) 2002-08-07 2006-02-14 Neff Charles E Method of fabricating pliant workpieces, tools for performing the method and methods for making those tools

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2941248A (en) * 1958-01-06 1960-06-21 Gen Electric High temperature high pressure apparatus
US2947617A (en) * 1958-01-06 1960-08-02 Gen Electric Abrasive material and preparation thereof
GB860499A (en) * 1958-01-27 1961-02-08 Gen Electric Methods of making cubic boron nitride

Also Published As

Publication number Publication date
GB1505923A (en) 1978-04-05
AU498756B2 (en) 1979-03-22
IL47808A0 (en) 1975-10-15
IT1044741B (en) 1980-04-21
AR209313A1 (en) 1977-04-15
ES439828A1 (en) 1977-06-01
FI752094A (en) 1976-01-30
CA1072296A (en) 1980-02-26
IE42151B1 (en) 1980-06-18
AT359974B (en) 1980-12-10
SE411443B (en) 1979-12-27
IL47808A (en) 1977-08-31
AU8336775A (en) 1977-01-27
BR7504828A (en) 1976-07-06
ATA580675A (en) 1980-05-15
SE7508551L (en) 1976-01-30
FI63203B (en) 1983-01-31
FR2280583A1 (en) 1976-02-27
IN143200B (en) 1977-10-15
CH618145A5 (en) 1980-07-15
DE2531339A1 (en) 1976-02-12
NL7508934A (en) 1976-02-02
FI63203C (en) 1983-05-10
JPS5137897A (en) 1976-03-30
FR2280583B1 (en) 1981-06-12

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