GB1274229A - Silicon nitride products - Google Patents

Silicon nitride products

Info

Publication number
GB1274229A
GB1274229A GB5888568A GB5888568A GB1274229A GB 1274229 A GB1274229 A GB 1274229A GB 5888568 A GB5888568 A GB 5888568A GB 5888568 A GB5888568 A GB 5888568A GB 1274229 A GB1274229 A GB 1274229A
Authority
GB
United Kingdom
Prior art keywords
silicon nitride
temperature
hot pressed
minutes
heated
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
GB5888568A
Inventor
Roger Frank Coe
Roland John Lumby
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
Joseph Lucas Industries 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 Lucas Industries Ltd, Joseph Lucas Industries Ltd filed Critical Lucas Industries Ltd
Priority to GB5888568A priority Critical patent/GB1274229A/en
Priority to FR6938173A priority patent/FR2025838A1/fr
Priority to SE1569669A priority patent/SE357722B/xx
Priority to DE19691960150 priority patent/DE1960150A1/en
Priority to AT1154969A priority patent/AT296861B/en
Priority to US00241750A priority patent/US3835211A/en
Publication of GB1274229A publication Critical patent/GB1274229A/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
    • C04B35/593—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 pressure sintering

Abstract

1,274,229. Hot pressed silicon nitride. JOSEPH LUCAS (INDUSTRIES) Ltd. Oct. 17, 1969 [Dec. 11, 1968], No.58885/68. Heading C7D. Fully densified hot pressed Si 3 N 4 is heated to a temperature sufficient to convert α Si 3 N 4 to the # form. The heating is effected either in the same hot press die for at least 10 minutes at temperature or the compact is removed from the die and heated in a separate furnace. Optionally pressure may be exerted on the compact during the further heating. Si 3 N 4 containing 1% MgO was hot pressed at 1700‹C. and retained at temperature and pressure for periods exceeding 10 minutes.
GB5888568A 1968-12-11 1968-12-11 Silicon nitride products Expired GB1274229A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB5888568A GB1274229A (en) 1968-12-11 1968-12-11 Silicon nitride products
FR6938173A FR2025838A1 (en) 1968-12-11 1969-11-06
SE1569669A SE357722B (en) 1968-12-11 1969-11-17
DE19691960150 DE1960150A1 (en) 1968-12-11 1969-12-01 Process for the manufacture of products from silicon nitride
AT1154969A AT296861B (en) 1968-12-11 1969-12-11 Process for making a silicon nitride product
US00241750A US3835211A (en) 1968-12-11 1972-04-06 Silicon nitride products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5888568A GB1274229A (en) 1968-12-11 1968-12-11 Silicon nitride products

Publications (1)

Publication Number Publication Date
GB1274229A true GB1274229A (en) 1972-05-17

Family

ID=10482604

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5888568A Expired GB1274229A (en) 1968-12-11 1968-12-11 Silicon nitride products

Country Status (5)

Country Link
AT (1) AT296861B (en)
DE (1) DE1960150A1 (en)
FR (1) FR2025838A1 (en)
GB (1) GB1274229A (en)
SE (1) SE357722B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2580272A1 (en) * 1985-04-11 1986-10-17 Toshiba Ceramics Co PROCESS FOR THE PRODUCTION OF SI3N4 IN B-FORM
EP0220839A1 (en) * 1985-09-27 1987-05-06 Kabushiki Kaisha Toshiba Silicon nitride ceramics

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4563433A (en) * 1982-02-22 1986-01-07 Kennametal Inc. Ceramic material and method of manufacture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2580272A1 (en) * 1985-04-11 1986-10-17 Toshiba Ceramics Co PROCESS FOR THE PRODUCTION OF SI3N4 IN B-FORM
EP0220839A1 (en) * 1985-09-27 1987-05-06 Kabushiki Kaisha Toshiba Silicon nitride ceramics

Also Published As

Publication number Publication date
FR2025838A1 (en) 1970-09-11
AT296861B (en) 1972-02-25
SE357722B (en) 1973-07-09
DE1960150A1 (en) 1970-07-02

Similar Documents

Publication Publication Date Title
CA924330A (en) High purity hot pressed boron nitride
GB1387415A (en) Method of and apparatus for producing a hot pressed component
CA949747A (en) System for hot de-oiling and hot briquetting
GB1274229A (en) Silicon nitride products
GB1089435A (en) Improvements in or relating to electric furnaces
CA930158A (en) Furnace for heat treating objects under high pressure
EP0062100A3 (en) Thyristor with internal-current amplification, and process for its operation
GB1299385A (en) Improved furnace apparatus for bending glass plates for windshields or the like
CA839321A (en) Metal nitride fibers, textiles and shapes and process for producing them
GB899915A (en) Hot pressing die
GB1216060A (en) Process for heat treating high conductivity copper alloys
CA958455A (en) Heated press
AU471595B2 (en) Thermostable polyamides and process for obtaining same
Fraser Social work and science: What can we conclude about the status of research in social work?
EP0279861A4 (en) Boron nitride sinter and process for its production.
Tavadze et al. Effects of High-Temperature Mechanical Treatment, Cold Plastic Deformation and Treatment at-196 C on the Mechanical Properties of Steel Kh 18 N 10 T
CA940373A (en) Hot stamping and heat transfer press for rollable objects
ES382872A1 (en) Method of heating metallurgical products
AU458152B2 (en) Thermostable polyamides and process for obtaining them
GB932044A (en) High temperature thermocouple device
Anderson Universal Furnace for All Batch PM Processes
GB1257811A (en)
CA924329A (en) High purity hot pressed boron nitride
FR2033472A5 (en) Electric heating for tunnel furnace carria- - ges for ceramic firing
Sirota et al. Method of Producing Cubic Boron Nitride

Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years