FR2245572A1 - Mfr. of cubic boron nitride - using mixt. of silicon and aluminium as catalyst - Google Patents

Mfr. of cubic boron nitride - using mixt. of silicon and aluminium as catalyst

Info

Publication number
FR2245572A1
FR2245572A1 FR7407755A FR7407755A FR2245572A1 FR 2245572 A1 FR2245572 A1 FR 2245572A1 FR 7407755 A FR7407755 A FR 7407755A FR 7407755 A FR7407755 A FR 7407755A FR 2245572 A1 FR2245572 A1 FR 2245572A1
Authority
FR
France
Prior art keywords
catalyst
mixt
aluminium
silicon
boron nitride
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
FR7407755A
Other languages
French (fr)
Other versions
FR2245572B1 (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.)
Komatsu Ltd
Original Assignee
Komatsu 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
Priority claimed from JP9329173A external-priority patent/JPS5044200A/ja
Priority claimed from JP11327173A external-priority patent/JPS5116395B2/ja
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Publication of FR2245572A1 publication Critical patent/FR2245572A1/en
Application granted granted Critical
Publication of FR2245572B1 publication Critical patent/FR2245572B1/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
    • C04B35/583—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
    • 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
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Catalysts (AREA)
  • Ceramic Products (AREA)

Abstract

A mixt. of hexagonal boron nitride and a catalyst is exposed to a press. of min. 35,000 atmos. at a temp. over 1000 degrees C. The catalyst contains a silicon-aluminium mixt., viz. Si-Al; Si with Al alloys; Si plus aluminium nitride and/or Si plus aluminium boride. The pref. conditions are 45,000 atmos. min. used at a min. of 1500 degrees C., with a catalyst:hexagonal Bn ratio of 1:3. The advantage of this process is the high yield as some BN is formed even at 1000 degrees C. when using 35,000 atmos.
FR7407755A 1973-08-22 1974-03-07 Mfr. of cubic boron nitride - using mixt. of silicon and aluminium as catalyst Granted FR2245572A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9329173A JPS5044200A (en) 1973-08-22 1973-08-22
JP11327173A JPS5116395B2 (en) 1973-10-11 1973-10-11

Publications (2)

Publication Number Publication Date
FR2245572A1 true FR2245572A1 (en) 1975-04-25
FR2245572B1 FR2245572B1 (en) 1977-09-23

Family

ID=26434695

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7407755A Granted FR2245572A1 (en) 1973-08-22 1974-03-07 Mfr. of cubic boron nitride - using mixt. of silicon and aluminium as catalyst

Country Status (3)

Country Link
DE (1) DE2408436C3 (en)
FR (1) FR2245572A1 (en)
SE (1) SE391916B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526413A1 (en) * 1982-04-27 1983-11-10 Bruss Polt I PROCESS FOR THE PREPARATION OF CUBIC BORON NITRIDE POLYCRISTALS AND BORON NITRIDE POLYCRISTALS THUS OBTAINED
EP0181258A2 (en) * 1984-10-30 1986-05-14 Societe Industrielle De Combustible Nucleaire Improved cubic boron nitride compact and method of making

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU512633B2 (en) * 1976-12-21 1980-10-23 Sumitomo Electric Industries, Ltd. Sintered tool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526413A1 (en) * 1982-04-27 1983-11-10 Bruss Polt I PROCESS FOR THE PREPARATION OF CUBIC BORON NITRIDE POLYCRISTALS AND BORON NITRIDE POLYCRISTALS THUS OBTAINED
EP0181258A2 (en) * 1984-10-30 1986-05-14 Societe Industrielle De Combustible Nucleaire Improved cubic boron nitride compact and method of making
EP0181258A3 (en) * 1984-10-30 1986-12-10 Societe Industrielle De Combustible Nucleaire Improved cubic boron nitride compact and method of making

Also Published As

Publication number Publication date
SE7401979L (en) 1975-02-24
DE2408436A1 (en) 1975-03-13
DE2408436C3 (en) 1980-08-07
FR2245572B1 (en) 1977-09-23
DE2408436B2 (en) 1979-11-29
SE391916B (en) 1977-03-07

Similar Documents

Publication Publication Date Title
DE60205867D1 (en) PROCESS FOR THE PREPARATION OF ANIONIC SOUND
GB1179156A (en) Process for Preparation of Hexagonal Boron Nitride.
JPS55113603A (en) Manufacture of alpha silicon nitride powder
FR2245572A1 (en) Mfr. of cubic boron nitride - using mixt. of silicon and aluminium as catalyst
KR970074650A (en) Method for producing cubic boron nitride
GB1194225A (en) Tetraboron Silicide.
GB1123602A (en) Production of refractory bodies
CA938426A (en) High surface area nitride catalysts of boron, aluminum, and silicon for hydrocarbon conversion reactions
GB1226724A (en)
JPS53133600A (en) Production of silicon nitride
GB1335909A (en) Method of producing cubic boron nitride and abrasive material based thereon
KR890005009A (en) Carbon-containing refractory and its manufacturing method
FR2076424A5 (en) Purification of aluminium
NL7000433A (en) Purification of aluminium
JPS56140014A (en) Synthesizing method for cubic system boron nitride
KR880007357A (en) Manufacturing method of aluminum nitride powder
ES391838A1 (en) Process for cyclopentadiene dimerizing
GB1103680A (en) Process for the preparation of ª‰-cyanoethyltrichlorosilane
GB942559A (en) Production of boron phosphide
Anderson et al. Silylated and germylated polyarsines
NL7117865A (en) Abrasive cubic boron nitride - from hexagonal boron nitride using metal borides
BE777558A (en) Abrasive cubic boron nitride - from hexagonal boron nitride using metal borides
JPS5239599A (en) Production of hexagonal boron nitride
GB1443158A (en) Silon carbide for cold drawing tools
RU93006323A (en) METHOD OF OBTAINING SILICON CARBIDE

Legal Events

Date Code Title Description
ST Notification of lapse