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
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.
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)
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)
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 |
-
1990
- 1990-02-01 DE DE4002974A patent/DE4002974A1/en not_active Withdrawn
- 1990-12-03 HU HU908037A patent/HU210281B/en not_active IP Right Cessation
- 1990-12-17 ES ES90124464T patent/ES2060913T3/en not_active Expired - Lifetime
- 1990-12-17 DE DE59007562T patent/DE59007562D1/en not_active Expired - Fee Related
- 1990-12-17 AT AT90124464T patent/ATE113318T1/en not_active IP Right Cessation
- 1990-12-17 EP EP90124464A patent/EP0439775B1/en not_active Expired - Lifetime
-
1991
- 1991-01-28 JP JP3008445A patent/JP2766081B2/en not_active Expired - Lifetime
- 1991-02-01 KR KR1019910001737A patent/KR0178038B1/en not_active IP Right Cessation
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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