SE520149C2 - Förfarande för att öka livslängden hos värmeelement av molybdensilicidtyp vid lägre temperatur - Google Patents

Förfarande för att öka livslängden hos värmeelement av molybdensilicidtyp vid lägre temperatur

Info

Publication number
SE520149C2
SE520149C2 SE0003512A SE0003512A SE520149C2 SE 520149 C2 SE520149 C2 SE 520149C2 SE 0003512 A SE0003512 A SE 0003512A SE 0003512 A SE0003512 A SE 0003512A SE 520149 C2 SE520149 C2 SE 520149C2
Authority
SE
Sweden
Prior art keywords
increasing
life
sub
molybdenum silicide
lower temperature
Prior art date
Application number
SE0003512A
Other languages
English (en)
Other versions
SE0003512L (sv
SE0003512D0 (sv
Inventor
Mats Sundberg
Original Assignee
Sandvik Ab
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 Sandvik Ab filed Critical Sandvik Ab
Priority to SE0003512A priority Critical patent/SE520149C2/sv
Publication of SE0003512D0 publication Critical patent/SE0003512D0/sv
Priority to AT01970456T priority patent/ATE356101T1/de
Priority to CNB018165141A priority patent/CN1195706C/zh
Priority to PCT/SE2001/002060 priority patent/WO2002026657A1/en
Priority to KR1020037004130A priority patent/KR100558111B1/ko
Priority to AU2001290457A priority patent/AU2001290457A1/en
Priority to ES01970456T priority patent/ES2281444T3/es
Priority to EP01970456A priority patent/EP1328491B1/en
Priority to DE60127152T priority patent/DE60127152T2/de
Priority to US10/381,359 priority patent/US6919544B2/en
Priority to JP2002530444A priority patent/JP4571373B2/ja
Publication of SE0003512L publication Critical patent/SE0003512L/sv
Priority to NO20031362A priority patent/NO20031362D0/no
Publication of SE520149C2 publication Critical patent/SE520149C2/sv

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
    • 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
    • C04B35/58085—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 silicides
    • C04B35/58092—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 silicides based on refractory metal silicides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/06—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base
    • H01C17/065—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thick film techniques, e.g. serigraphy
    • H01C17/06506—Precursor compositions therefor, e.g. pastes, inks, glass frits or green body
    • H01C17/06513—Precursor compositions therefor, e.g. pastes, inks, glass frits or green body characterised by the resistive component
    • H01C17/0656—Precursor compositions therefor, e.g. pastes, inks, glass frits or green body characterised by the resistive component composed of silicides
    • 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
    • H05B1/00—Details of electric heating devices
    • 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—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating 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—Heating 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/0003—Linings or walls
    • F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0006—Electric heating elements or system
    • F27D2099/0008—Resistor heating
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/018—Heaters using heating elements comprising mosi2
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49082—Resistor making

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Resistance Heating (AREA)
  • Ceramic Products (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Description

70 75 20 25 30 520 149 Ett annat sätt beskrives i det svenska patentet nr. 0001846- 5, nämligen att vattenhalten i den atmosfär som omger elemen- bringas att vara låg. Detta sätt ger ten, när dessa opereras, ett tillfredsställande skydd mot pestbildning.
Föreliggande förfarande ökar livslängden betydligt.
Föreliggande uppfinning avser således ett förfarande för att öka livslängden för värmeelement väsentligen bestående av molybdensilicid samt legeringar av detta grundmaterial, när elementen opereras vid en låg temperatur, såsom i intervallet 400 - 600 °C och utmärkes av, att värmeelementets material bringas att utgöras av Mo(Siy¶Alx)2 och upp till 40% Al2O3och av att detta material bringas att innehålla aluminium i sådan grad att x ligger i intervallet 0.4 - 0.5 för att pestbild- ning väsentligen skall förhindras.
Föreliggande förfarande avser att öka livslängden för värme- element väsentligen bestående av molybdensilicid samt lege- ringar av detta grundmaterial, när elementen opereras vid en låg temperatur, såsom i intervallet 400 - 600 °C. Exempel på dylika ugnar har nämnts ovan.
Med molybdensilicid samt legeringar av detta grundmaterial menas att molybdensiliciden exempelvis kan vara legerad med en mindre mängd wolfram.
Enligt uppfinningen innehåller värmeelementets motståndsmate- rial Mo(Si1¶AlQ2, där detta material bringas att innehålla aluminium i tillräcklig grad för att pestbildning väsentligen förhindras.
K:\Pa1ent\0001Mseßlutfiåreläggandeinl O3-03-19.doc 70 75 20 520 149 Det har nämligen mycket överraskande visat sig att när ett sådant material opereras vid nämnda temperaturintervall bil- das ingen eller endast mycket liten mängd pest.
Detta beror på att Alfih bildas på elementets yta varigenom pestbildning minskar eller försvinner.
Enligt en föredragen utföringsform bringas x att ligga i intervallet 0.2 - 0.6. Enligt detta utförande bildas mycket lite pest jämfört när konventionella element för det aktuella temperaturintervallet används.
Enligt en mycket föredragen utföringsform bringas X att ligga i intervallet 0.45 - 0.50. Härvid bildas ingen pest. Sökanden har i en test hållit ett dylikt element vid 450 °C under 12 månader utan att någon pestbildning skett. Detta var mycket överraskande.
Enligt ett föredraget utförande bringas värmeelementets mate- rial att innehålla upp till 40 vol% A120; Aluminiumoxiden ut- gör en mekaniskt stabiliserande fas för elementet.
K:\Patent\0001 Mseßlutfórelåggandejnl 03-03 -19.doc

Claims (1)

1. 0 520 149 Patentkrav l. Forfarande for att oka livslängden for värmeelement vä- sentligen bestående av molybdensilicid samt legeringar av detta grundmaterial, när elementen opereras vid en låg tempe- ratur, såsom i intervallet 400 - 600 °C, k ä n n e t e c k - n a t a v, att värmeelementets material bringas att utgöras av Mo(Sil¶AlX)2 och upp till 40% Al2O3och av att detta materi- al bringas att innehålla aluminium i sådan grad att x ligger i intervallet 0.4 - 0.5 for att pestbildning väsentligen skall förhindras. K:\Patent\0001Mseßlutföreläggandeinl 03-03-19.doc
SE0003512A 2000-09-29 2000-09-29 Förfarande för att öka livslängden hos värmeelement av molybdensilicidtyp vid lägre temperatur SE520149C2 (sv)

Priority Applications (12)

Application Number Priority Date Filing Date Title
SE0003512A SE520149C2 (sv) 2000-09-29 2000-09-29 Förfarande för att öka livslängden hos värmeelement av molybdensilicidtyp vid lägre temperatur
JP2002530444A JP4571373B2 (ja) 2000-09-29 2001-09-25 モリブデン二ケイ化物からなる加熱要素の低温度における寿命の改良方法
ES01970456T ES2281444T3 (es) 2000-09-29 2001-09-25 Metodo para mejorar el periodo de vida de un elemento calefactor de un disiliciuro de molibdeno a bajas temperaturas.
CNB018165141A CN1195706C (zh) 2000-09-29 2001-09-25 改善较低温度下二硅化钼加热元件使用寿命的方法
PCT/SE2001/002060 WO2002026657A1 (en) 2000-09-29 2001-09-25 Method to improve the life span of a heating element of a molybdenium disilicide at lower temperatures
KR1020037004130A KR100558111B1 (ko) 2000-09-29 2001-09-25 저온에서 이규화몰리브덴 가열 요소의 유효 수명을연장시키는 방법
AU2001290457A AU2001290457A1 (en) 2000-09-29 2001-09-25 Method to improve the life span of a heating element of a molybdenium disilicideat lower temperatures
AT01970456T ATE356101T1 (de) 2000-09-29 2001-09-25 Verfahren zur verbesserung der lebensdauer eines molybdän-disilicid-heizelementes bei niedrigen temperaturen
EP01970456A EP1328491B1 (en) 2000-09-29 2001-09-25 Method to improve the life span of a heating element of a molybdenium disilicide at lower temperatures
DE60127152T DE60127152T2 (de) 2000-09-29 2001-09-25 Verfahren zur verbesserung der lebensdauer eines molybdän-disilicid-heizelementes bei niedrigen temperaturen
US10/381,359 US6919544B2 (en) 2000-09-29 2001-09-25 Method to improve the life span of a heating element of a molybdenium disilicide at lower temperatures
NO20031362A NO20031362D0 (no) 2000-09-29 2003-03-25 Fremgangsmåte for å öke levetiden til et oppvarmingselement av molybden disilicid ved lave temperaturer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0003512A SE520149C2 (sv) 2000-09-29 2000-09-29 Förfarande för att öka livslängden hos värmeelement av molybdensilicidtyp vid lägre temperatur

Publications (3)

Publication Number Publication Date
SE0003512D0 SE0003512D0 (sv) 2000-09-29
SE0003512L SE0003512L (sv) 2002-03-30
SE520149C2 true SE520149C2 (sv) 2003-06-03

Family

ID=20281234

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0003512A SE520149C2 (sv) 2000-09-29 2000-09-29 Förfarande för att öka livslängden hos värmeelement av molybdensilicidtyp vid lägre temperatur

Country Status (12)

Country Link
US (1) US6919544B2 (sv)
EP (1) EP1328491B1 (sv)
JP (1) JP4571373B2 (sv)
KR (1) KR100558111B1 (sv)
CN (1) CN1195706C (sv)
AT (1) ATE356101T1 (sv)
AU (1) AU2001290457A1 (sv)
DE (1) DE60127152T2 (sv)
ES (1) ES2281444T3 (sv)
NO (1) NO20031362D0 (sv)
SE (1) SE520149C2 (sv)
WO (1) WO2002026657A1 (sv)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE520148C3 (sv) * 2000-11-24 2003-07-16 Sandvik Ab Förfarande för att öka livslängden hos värmeelement av molybdendisilicidtyp vid värmebehandling av elektroniska keramer
EP1492740B1 (en) * 2002-04-05 2007-09-05 Sandvik Intellectual Property AB Method of making a heating element of molybdenum silicide type
SE521796C2 (sv) * 2002-04-05 2003-12-09 Sandvik Ab Förfarande för tillverkning av ett värmeelement av molybdensilicidtyp jämte ett värmeelement
SE521794C2 (sv) * 2002-04-05 2003-12-09 Sandvik Ab Tillverkningsförfarande för ett värmeelement av molybdensilicidtyp, jämte ett värmeelement
US20060108635A1 (en) * 2004-11-23 2006-05-25 Alpha Omega Semiconductor Limited Trenched MOSFETS with part of the device formed on a (110) crystal plane
EP3768653B1 (en) * 2018-03-18 2022-03-30 Kanthal AB A heating element containing molybdenum disilicide parts

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SE504235C2 (sv) * 1995-04-11 1996-12-09 Kanthal Ab Elektriskt motståndselement av molybdensilicidtyp
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Also Published As

Publication number Publication date
ATE356101T1 (de) 2007-03-15
DE60127152D1 (de) 2007-04-19
CN1195706C (zh) 2005-04-06
KR100558111B1 (ko) 2006-03-10
EP1328491B1 (en) 2007-03-07
WO2002026657A1 (en) 2002-04-04
SE0003512L (sv) 2002-03-30
JP2004510054A (ja) 2004-04-02
ES2281444T3 (es) 2007-10-01
US20040056021A1 (en) 2004-03-25
SE0003512D0 (sv) 2000-09-29
DE60127152T2 (de) 2008-01-03
US6919544B2 (en) 2005-07-19
KR20030059149A (ko) 2003-07-07
CN1466556A (zh) 2004-01-07
AU2001290457A1 (en) 2002-04-08
JP4571373B2 (ja) 2010-10-27
NO20031362L (no) 2003-03-25
NO20031362D0 (no) 2003-03-25
EP1328491A1 (en) 2003-07-23

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