ES2060913T3 - MOLYBDENO MATERIAL, ESPECIALLY FOR THE MANUFACTURE OF LIGHT BULBS. - Google Patents

MOLYBDENO MATERIAL, ESPECIALLY FOR THE MANUFACTURE OF LIGHT BULBS.

Info

Publication number
ES2060913T3
ES2060913T3 ES90124464T ES90124464T ES2060913T3 ES 2060913 T3 ES2060913 T3 ES 2060913T3 ES 90124464 T ES90124464 T ES 90124464T ES 90124464 T ES90124464 T ES 90124464T ES 2060913 T3 ES2060913 T3 ES 2060913T3
Authority
ES
Spain
Prior art keywords
pref
esp
ppm
content
molybdeno
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 - Lifetime
Application number
ES90124464T
Other languages
Spanish (es)
Inventor
Cosetta Dr Setti
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Application granted granted Critical
Publication of ES2060913T3 publication Critical patent/ES2060913T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
    • C22C27/04—Alloys based on tungsten or molybdenum

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Glass Compositions (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Catalysts (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A Mo material, for lamp mfr., is doped with K, Si and Al, the novelty being that the Al content is 80-600 (pref. 100-300, esp. 140-180) wt. ppm. Prodn. of the Mo material involves adding Al as an unstable cpd. (esp. the nitrate) to a pulverised Mo cpd. (esp. MoO3 of more than 99.97 wt. % purity) and then reducing. Pref. the material has an Al/K wt. ratio of 1:0.8-2.0 and an Al/Si wt. ratio of 1:1.8-3.8, the K content being 100-400 (pref. 250-300 or 130-170) wt. ppm and the Si content being 200-700 (pref. 400-600 or 270-320) wt. ppm. After redn., the Mo material is pressed to rod, densely sintered at 1700 deg.C without direct current passage and then worked to form pins, tubes, wires or strip.
ES90124464T 1990-02-01 1990-12-17 MOLYBDENO MATERIAL, ESPECIALLY FOR THE MANUFACTURE OF LIGHT BULBS. Expired - Lifetime ES2060913T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4002974A DE4002974A1 (en) 1990-02-01 1990-02-01 Doped molybdenum material esp. for lamp mfr. - with controlled aluminium content for high quality and low reject rate

Publications (1)

Publication Number Publication Date
ES2060913T3 true ES2060913T3 (en) 1994-12-01

Family

ID=6399219

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90124464T Expired - Lifetime ES2060913T3 (en) 1990-02-01 1990-12-17 MOLYBDENO MATERIAL, ESPECIALLY FOR THE MANUFACTURE OF LIGHT BULBS.

Country Status (7)

Country Link
EP (1) EP0439775B1 (en)
JP (1) JP2766081B2 (en)
KR (1) KR0178038B1 (en)
AT (1) ATE113318T1 (en)
DE (2) DE4002974A1 (en)
ES (1) ES2060913T3 (en)
HU (1) HU210281B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9415217U1 (en) 1994-09-21 1996-01-25 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 81543 München High pressure discharge lamp
DE19603301C2 (en) * 1996-01-30 2001-02-22 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Electric lamp with molybdenum foil bushings for a lamp vessel made of quartz glass
DE19603300C2 (en) * 1996-01-30 2001-02-22 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Electric lamp with molybdenum foil bushings for a lamp vessel made of quartz glass

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676083A (en) * 1969-01-21 1972-07-11 Sylvania Electric Prod Molybdenum base alloys
JPS57123625A (en) * 1981-01-23 1982-08-02 Toshiba Corp Bulb
US4514234A (en) * 1983-02-10 1985-04-30 Tokyo Shibaura Denki Kabushiki Kaisha Molybdenum board and process of manufacturing the same
JPS60194043A (en) * 1984-03-14 1985-10-02 Toshiba Corp Tube bulb weld
JPS63114935A (en) * 1986-10-31 1988-05-19 Tokyo Tungsten Co Ltd Molybdenum crucible and its production
JPH0232340B2 (en) * 1986-12-25 1990-07-19 Tokyo Tungsten Kk MORIBUDENZAI
JPS63192840A (en) * 1987-02-06 1988-08-10 Tokyo Tungsten Co Ltd Molybdenum material for dot printer

Also Published As

Publication number Publication date
KR0178038B1 (en) 1999-02-18
EP0439775A1 (en) 1991-08-07
HU908037D0 (en) 1991-06-28
ATE113318T1 (en) 1994-11-15
KR910021490A (en) 1991-12-20
DE59007562D1 (en) 1994-12-01
JP2766081B2 (en) 1998-06-18
JPH04214836A (en) 1992-08-05
HU210281B (en) 1995-03-28
HUT62946A (en) 1993-06-28
EP0439775B1 (en) 1994-10-26
DE4002974A1 (en) 1991-08-08

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