GB1435467A - Method of producing silicon nitride articles - Google Patents

Method of producing silicon nitride articles

Info

Publication number
GB1435467A
GB1435467A GB1602174A GB1602174A GB1435467A GB 1435467 A GB1435467 A GB 1435467A GB 1602174 A GB1602174 A GB 1602174A GB 1602174 A GB1602174 A GB 1602174A GB 1435467 A GB1435467 A GB 1435467A
Authority
GB
United Kingdom
Prior art keywords
silicon nitride
compact
powder
dense
silicon
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
GB1602174A
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.)
Plessey Co Ltd
Original Assignee
Plessey Co 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB1602174A priority Critical patent/GB1435467A/en
Publication of GB1435467A publication Critical patent/GB1435467A/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
    • C04B35/584—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 silicon nitride
    • C04B35/591—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 silicon nitride obtained by reaction sintering

Landscapes

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

Abstract

1435467 Silicon nitride articles PLESSEY CO Ltd 16 Jan 1975 [10 April 1974] 16021/74 Heading C1A [Also in Division C7] Silicon nitride articles are prepared by a method which includes the steps of providing a dense silicon nitride compact, forming the compact into a desired shape, providing a silicon powder and mixing it with a binding agent, forming the mixture round the dense Si 3 N 4 compact to form a silicon powder compacted layer around the dense Si 3 N 4 compact, and at least partially nitriding the silicon powder compacted layer. The Si powder preferably has a particle size not greater than 200 British Standard mesh and is mixed with 15% by weight of the binding agent. The partially nitrided compacted Si powder layer may be shaped and then completely nitrided. Shaping may be by grinding or hot forging.
GB1602174A 1974-04-10 1974-04-10 Method of producing silicon nitride articles Expired GB1435467A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1602174A GB1435467A (en) 1974-04-10 1974-04-10 Method of producing silicon nitride articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1602174A GB1435467A (en) 1974-04-10 1974-04-10 Method of producing silicon nitride articles

Publications (1)

Publication Number Publication Date
GB1435467A true GB1435467A (en) 1976-05-12

Family

ID=10069735

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1602174A Expired GB1435467A (en) 1974-04-10 1974-04-10 Method of producing silicon nitride articles

Country Status (1)

Country Link
GB (1) GB1435467A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437385A1 (en) * 1978-09-27 1980-04-25 Norton Co PROTECTIVE COATING FOR POROUS REFRACTORY PRODUCTS
FR2559762A1 (en) * 1984-02-16 1985-08-23 Kurosaki Refractories Co METHOD FOR BONDING CERAMIC
GB2156382A (en) * 1984-02-16 1985-10-09 Kurosaki Refractories Co Producing a silicon nitride sintered body of complex shape

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437385A1 (en) * 1978-09-27 1980-04-25 Norton Co PROTECTIVE COATING FOR POROUS REFRACTORY PRODUCTS
FR2559762A1 (en) * 1984-02-16 1985-08-23 Kurosaki Refractories Co METHOD FOR BONDING CERAMIC
GB2156382A (en) * 1984-02-16 1985-10-09 Kurosaki Refractories Co Producing a silicon nitride sintered body of complex shape
GB2156853A (en) * 1984-02-16 1985-10-16 Kurosaki Refractories Co Method of bonding ceramics

Similar Documents

Publication Publication Date Title
CA1016752A (en) Gas generating composition and method of preparing compression-molded articles therefrom
GB1392161A (en) Method of producing ceramics of silicon nitride
ES475258A1 (en) Process for manufacturing dense polycrystalline shaped articles of boron carbide by pressureless sintering.
ES414239A1 (en) Steel powder containing phosphorus
GB1435467A (en) Method of producing silicon nitride articles
GB1246308A (en) Production of sintered metal articles direct from metal ore
GB1434129A (en) Poly-meta-phenylene isophthalamide- powders and processes for their preparation
GB1427968A (en) Production of silicon nitride bodies
GB1393579A (en) Method of producing high density silicon nitride
GB1475488A (en) Process for the production of silicon nitride ceramics
GB1396916A (en) Method for the production of mouldings of great hardness which contains silicon nitride and or silicon oxynitride
JPS51132105A (en) A method of producing sintered molding
ES2027585A6 (en) Procedure for decorating cosmetics, and decorated cosmetic articles so obtained
GB1292007A (en) A method of producing an article by sintering and subsequent local compression and a synchronizer ring
GB1357099A (en) Method of manufacturing silicon nitride products
SE7508910L (en) METHOD OF POWER METALLURGIC PRODUCING PRECISION DETAILS
JPS5665903A (en) Production of scroll
GB1211267A (en) Method of production of a chromium containing alloy and alloy thereby obtained
JPS53128513A (en) Process for producing sintered steel
GB1451472A (en) Method of preparing silicon nitride powder insecticidal gels
GB1448915A (en) Process for making silicon nitride articles
JPS51123714A (en) A process for producing sintered moldings of cast iron powder
GB1413975A (en) Preparation of silicon nitride
JPS57200501A (en) Iron powder having high compressibility for high strength powder metallurgy product and preparation thereof
FR2223472A1 (en) Compound hard sintered material mfr. - e.g. carbide and metal, to form compound workpieces

Legal Events

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