GB1335909A - Method of producing cubic boron nitride and abrasive material based thereon - Google Patents

Method of producing cubic boron nitride and abrasive material based thereon

Info

Publication number
GB1335909A
GB1335909A GB2625971*A GB2625971A GB1335909A GB 1335909 A GB1335909 A GB 1335909A GB 2625971 A GB2625971 A GB 2625971A GB 1335909 A GB1335909 A GB 1335909A
Authority
GB
United Kingdom
Prior art keywords
boron nitride
cubic boron
borides
abrasive material
material based
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
GB2625971*A
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.)
VNII ABRAZIVOV
Original Assignee
VNII ABRAZIVOV
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 VNII ABRAZIVOV filed Critical VNII ABRAZIVOV
Publication of GB1335909A publication Critical patent/GB1335909A/en
Expired 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
    • C04B35/583—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 boron nitride
    • C04B35/5831—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 boron nitride based on cubic boron nitrides or Wurtzitic boron nitrides, including crystal structure transformation of powder
    • 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

Abstract

1335909 Cubic boron nitride VSESOJUZNY NAUCHNO - ISSLEDOVATELSKY INSTITUT ABRAZIVOV I SHLIFOVANIA 19 April 1971 [12 Oct 1970] 26259/71 Heading C1A [Also in Division C4] Cubic boron nitride is prepared by subjecting hexagonal boron nitride to at least 1000‹ C. and 40 Kbar in the presence of at least one boride of an alkali and/or alkaline earth metal which is present in such a quantity as to increase the boron content in the reactants by at least 10%. Suitable borides are Hg or Be borides which may be present in such quantity as to increase the boron content by 20-55%. The reaction mixture may be preheated to at least 1000‹ C. and cooled before being subjected to the reaction conditions. An abrasive product of the process contains 90-98% cubic boron nitride, not more than 9% unhydrolysable borides, nitrides and free boron, and not more than 1% hexagonal boron nitride with at least 80% of the abrasive material in the form of grains of polycrystalline aggregates.
GB2625971*A 1970-10-12 1971-04-19 Method of producing cubic boron nitride and abrasive material based thereon Expired GB1335909A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1476053A SU324820A1 (en) 1970-10-12 1970-10-12 Abrasive material elbor

Publications (1)

Publication Number Publication Date
GB1335909A true GB1335909A (en) 1973-10-31

Family

ID=20457382

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2625971*A Expired GB1335909A (en) 1970-10-12 1971-04-19 Method of producing cubic boron nitride and abrasive material based thereon

Country Status (12)

Country Link
BG (1) BG17855A1 (en)
CH (1) CH559146A5 (en)
CS (1) CS184855B1 (en)
DD (2) DD98271A1 (en)
DE (1) DE2116020C3 (en)
FR (1) FR2098009A5 (en)
GB (1) GB1335909A (en)
HU (1) HU163062B (en)
PL (1) PL76371B1 (en)
SE (1) SE372495B (en)
SU (1) SU324820A1 (en)
ZA (1) ZA712251B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3030362A1 (en) * 1980-08-11 1982-02-25 Institut sverchtverdych materialov Akademii Nauk Ukrainskoj SSR, Kiev Cubic boron nitride of larger particle size - produced by addition of salt having water of crystallisation to the initial charge contg. the hexagonal form and initiator
FR2495597A1 (en) * 1980-08-26 1982-06-11 Inst Sverkhtverdykh Mat Cubic boron nitride of larger particle size - produced by addition of salt having water of crystallisation to the initial charge contg. the hexagonal form and initiator
US4349517A (en) 1980-10-21 1982-09-14 Lysanov Vladislav S Method of producing cubic boron nitride

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE805525A (en) * 1972-10-02 1974-04-01 Vnii Abrazivov EXTRA-HARD COMPOSITE MATERIAL BASED ON CUBIC BORON NITRIDE AND PROCESS FOR OBTAINING THIS MATERIAL
DE2702082C3 (en) * 1976-01-30 1982-02-25 Institut fizičeskoj chimii Akademii Nauk SSSR, Moskva Polycrystalline Superhard Cubic Boron Nitride Material and Process for Its Manufacture

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3030362A1 (en) * 1980-08-11 1982-02-25 Institut sverchtverdych materialov Akademii Nauk Ukrainskoj SSR, Kiev Cubic boron nitride of larger particle size - produced by addition of salt having water of crystallisation to the initial charge contg. the hexagonal form and initiator
FR2495597A1 (en) * 1980-08-26 1982-06-11 Inst Sverkhtverdykh Mat Cubic boron nitride of larger particle size - produced by addition of salt having water of crystallisation to the initial charge contg. the hexagonal form and initiator
US4349517A (en) 1980-10-21 1982-09-14 Lysanov Vladislav S Method of producing cubic boron nitride

Also Published As

Publication number Publication date
DE2116020A1 (en) 1972-04-13
DE2116020B2 (en) 1976-02-26
DE2116020C3 (en) 1979-02-01
SE372495B (en) 1974-12-23
CS184855B1 (en) 1978-09-15
HU163062B (en) 1973-05-28
FR2098009A5 (en) 1972-03-03
DD99527A1 (en) 1973-08-20
BG17855A1 (en) 1974-03-05
SU324820A1 (en) 1976-07-05
PL76371B1 (en) 1975-02-28
CH559146A5 (en) 1975-02-28
DD98271A1 (en) 1973-06-12
ZA712251B (en) 1972-06-28

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee