GB1497871A - Electrical igniter elements - Google Patents

Electrical igniter elements

Info

Publication number
GB1497871A
GB1497871A GB161975A GB161975A GB1497871A GB 1497871 A GB1497871 A GB 1497871A GB 161975 A GB161975 A GB 161975A GB 161975 A GB161975 A GB 161975A GB 1497871 A GB1497871 A GB 1497871A
Authority
GB
United Kingdom
Prior art keywords
silicon
heating
mix
silicon carbide
temperature
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
GB161975A
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.)
Unifrax 1 LLC
Original Assignee
Carborundum Co
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 Carborundum Co filed Critical Carborundum Co
Publication of GB1497871A publication Critical patent/GB1497871A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/22—Details
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/148—Silicon, e.g. silicon carbide, magnesium silicide, heating transistors or diodes

Abstract

1497871 Silicon carbide CORBORUNDUM CO 14 Jan 1975 [21 Jan 1974] 1619/75 Heading C1A [Also in Division H5] A silicon carbide igniter element is prepared by: (a) forming a shaped body consisting essentially of flexible discontinuous laminar graphite; (b) covering the body with at least 4 times the weight of said laminar graphite of a siliconizing mix comprising 65 to 91% by weight of silicon in the form of elemental silicon or a compound capable of yielding elemental silicon on heating, 4 to 25% of graphitic carbon and 1 to 15% of a carbonaceous binder; (c) heating the body and mix at a temperature of at least 1450‹ C. and, if the mix contains a silicon yielding compound, at least to the temperature at which said compound yields silicon, said heating being conducted for a sufficient time to convert substantially all of the graphite of said body to silicon carbide; and (d) further heating the obtained silicon carbide body to a temperature higher than that used in step (c) and in the range of 1800‹ to 2500‹ C. Silicon compounds which may be used are silica and silicon nitride. Heating steps (c) and (d) may be carried out in a vacuum, in an inert atmosphere or in a doping atmosphere, e.g. nitrogen. Doping may also be carried out by including dopants in the siliconizing mix. Dopants specified are phosphorus, nitrogen, boron and aluminium.
GB161975A 1974-01-21 1975-01-14 Electrical igniter elements Expired GB1497871A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43535274A 1974-01-21 1974-01-21

Publications (1)

Publication Number Publication Date
GB1497871A true GB1497871A (en) 1978-01-12

Family

ID=23728048

Family Applications (1)

Application Number Title Priority Date Filing Date
GB161975A Expired GB1497871A (en) 1974-01-21 1975-01-14 Electrical igniter elements

Country Status (4)

Country Link
JP (1) JPS5718682B2 (en)
DE (1) DE2501894A1 (en)
FR (1) FR2258695A1 (en)
GB (1) GB1497871A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137975A (en) * 1983-04-12 1984-10-17 Atomic Energy Authority Uk Joining of Silicon Carbide Bodies
GB2404128A (en) * 2003-07-16 2005-01-19 Kanthal Ltd Strip-form silicon carbide heating element
US7342201B1 (en) * 1999-11-25 2008-03-11 Nanogate Ag Silcon carbide element

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2963478D1 (en) * 1978-06-29 1982-09-30 Morganite Electroheat Ltd Igniter
US6179609B1 (en) * 1998-08-05 2001-01-30 Persys Technology Ltd. Compact external torch assembly for semiconductor processing
JP5322055B2 (en) * 2009-08-18 2013-10-23 独立行政法人産業技術総合研究所 Porous heating device and manufacturing method thereof
JP7292573B2 (en) * 2018-12-07 2023-06-19 住友金属鉱山株式会社 Silicon carbide polycrystalline substrate and manufacturing method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137975A (en) * 1983-04-12 1984-10-17 Atomic Energy Authority Uk Joining of Silicon Carbide Bodies
US7342201B1 (en) * 1999-11-25 2008-03-11 Nanogate Ag Silcon carbide element
GB2404128A (en) * 2003-07-16 2005-01-19 Kanthal Ltd Strip-form silicon carbide heating element
WO2005009081A1 (en) * 2003-07-16 2005-01-27 Kanthal Limited Silicon carbide heating elements
GB2404128B (en) * 2003-07-16 2005-08-24 Kanthal Ltd Silicon carbide furnace heating elements
US7759618B2 (en) 2003-07-16 2010-07-20 Sandvik Materials Technology Uk Limited Silicon carbide heating elements

Also Published As

Publication number Publication date
JPS5718682B2 (en) 1982-04-17
DE2501894A1 (en) 1975-07-24
FR2258695A1 (en) 1975-08-18
JPS50102892A (en) 1975-08-14

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed