EP1958238A2 - Metallhalogenidlampe - Google Patents
MetallhalogenidlampeInfo
- Publication number
- EP1958238A2 EP1958238A2 EP06819826A EP06819826A EP1958238A2 EP 1958238 A2 EP1958238 A2 EP 1958238A2 EP 06819826 A EP06819826 A EP 06819826A EP 06819826 A EP06819826 A EP 06819826A EP 1958238 A2 EP1958238 A2 EP 1958238A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- mov
- metal halide
- halide lamp
- pca
- adhesive layer
- 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.)
- Granted
Links
- 229910001507 metal halide Inorganic materials 0.000 title claims abstract description 15
- 150000005309 metal halides Chemical class 0.000 title claims abstract description 15
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 17
- 239000012790 adhesive layer Substances 0.000 claims abstract description 14
- 239000000919 ceramic Substances 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 26
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 18
- 239000011195 cermet Substances 0.000 claims description 11
- 238000005245 sintering Methods 0.000 claims description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 229910052720 vanadium Inorganic materials 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 6
- 229910000756 V alloy Inorganic materials 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 4
- WUJISAYEUPRJOG-UHFFFAOYSA-N molybdenum vanadium Chemical compound [V].[Mo] WUJISAYEUPRJOG-UHFFFAOYSA-N 0.000 claims description 3
- 238000005269 aluminizing Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 10
- 239000012071 phase Substances 0.000 description 9
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 7
- 239000011733 molybdenum Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 5
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910015455 Mo3Al Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- HMPVUDRACAQMSH-UHFFFAOYSA-N [Al].[Mo].[Mo].[Mo] Chemical compound [Al].[Mo].[Mo].[Mo] HMPVUDRACAQMSH-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000004694 iodide salts Chemical class 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 150000002835 noble gases Chemical class 0.000 description 1
- 239000008385 outer phase Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
- H01J61/366—Seals for leading-in conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/32—Seals for leading-in conductors
- H01J5/34—Seals for leading-in conductors for an individual conductor
- H01J5/36—Seals for leading-in conductors for an individual conductor using intermediate part
Definitions
- the invention relates to a metal halide lamp according to the preamble of claim 1. These are lamps with a ceramic discharge vessel, which are used in particular in general lighting.
- a metal halide lamp is already known from US Pat. No. 6,590,342.
- the bushing is sealed by means of glass solder ⁇ in a plug.
- a layer of molybdenum aluminide, Mo3Al is applied to the bushing.
- Other intermetallic components are also proposed for the layer.
- the bushing is a pin, the inner part of which is made of molybdenum.
- the layer also zusharm ⁇ union purpose of being particularly resistant to halogens development its fill.
- the object of the present invention to make the sealing of the implementation possible permanently and achieve ei ⁇ ne improved adhesion between implementation and environment. This object is achieved by the characterizing features of claim 1. Particularly advantageous Ausgestaltun ⁇ gen can be found in the dependent claims.
- a tube is preferably used as a bushing because it has more elastic properties than a pin.
- said conducting also may comprise other parts, such as a Niobteil as an outer member or a core of a different material.
- the MoV part is treated using an alitation process. Subsequently ⁇ this system is directly inserted into the open end of a PCA green body from d.
- the PCA part is either a stopper or the direct end of a discharge vessel made of transparent Al 2 O 3 or the like, if necessary it can also be a Cermet part made of the components Mo and Al 2 O 3 .
- a A18Mo3 phase to which further inside Al poorer phases AlwMoyVz phase, similar to Mo 3 Al, connect ⁇ , the further inward finally the outside is formed in the surface of carrying a gradient microstructure of an Al-rich phase AlxMoyVz, similar into the MoV structure of the tube.
- the index w is significantly smaller than x.
- the aluminum from this near-surface outer phase is capable of direct sintering of the green body, in which the green body shrinks by the order of about 10 to 30%, -A- which temporarily seals the procedure -, due to the heat treatment during direct sintering, a reaction with the oxygen of the PCA part, i.e.
- the plug or preferably the end of the discharge vessel which mainly consist of Al 2 O 3 (PCA), to enter and da ⁇ to create a firm connection between the stopper or end of the discharge vessel and the implementation.
- the adhesive layer is partially or completely converted into a cermet made of Mo, V and Al 2 O 3 .
- this type can be of the seal for a system of MoV part of the leadthrough and a cerium met stopper made of Mo and Al 2 O 3 used, wherein for ANPAS ⁇ coefficient of thermal expansion solution, the proportions Mo: to choose V otherwise are than in the case of a pure Al 2 O 3 stopper, but in the following the term PCA part is used for all these variants.
- the adhesive partner is preferably the direct end of the discharge vessel, because then a completely glass solder-free simple and secure connection is possible, which enables reliable sealing by combining direct sintering with an additional adhesive layer.
- the adhesive layer either consists only partially or more or less completely of a cermet made of Mo, V and Al2O3, whereby portions of the initially existing MoxAlyVz layers with a gradient structure can be retained.
- a MoV alloy is used in the sealing area of the bushing instead of Mo.
- the alloy is adjusted so that its thermal expansion coefficient is around 8 x 10 * ⁇ 6 K "1. It is therefore ideally matched to that of so-called PCA, that is to say polyceramic Al 2 O 3.
- PCA polyceramic Al 2 O 3.
- the alloy can also be adjusted in this way that an adaptation to a cermet stopper is possible by increasing the Mo portion.
- MoV can be used as well as pure Mo.
- the Al component of the alloy reacts well enough to create an adhesive layer. This Alitation process is time and temperature dependent, so that a gradient structure with Al-rich and Al poorer phases is initially formed in the adhesive layer.
- the good adhesion is achieved by the temporary formation of an intermetallic structure, which is formed as Gra ⁇ serves structure from the Mo content of the base material to the practice in the ceramic inside. This significantly reduces the formation of cracks that previously originated at the interface between the passage and the ceramic.
- the pipe dimensions of the MoV-containing bushing can be conventional, as set out in EP-A 528 428, for example.
- a tube with a diameter of 0.5 to 3 mm is particularly preferred.
- the wall thickness is, for example, 100 to 300 ⁇ m.
- the outwardly located on the implementation of MoV or predominantly present there "(MOV) 3A18" layer reacts at the high temperature of the direct sintering process of ty ⁇ pisch 1700-1900 0 C with the oxygen at the Oberflä ⁇ surface of the ceramic so that in this layer, the Al is converted into Al 2 O 3 , the original (MoV) 3A18 becoming a phase that is poorer in Al.
- This case corresponds standing cermet Mo-A1203 is in his reaction tet a toothed layer, which ensures particularly good adhesion slightest ⁇ .
- the reaction in the cermet stopper takes place primarily on the surface of larger grains of Al 2 O 3 , where the Al is very reactive.
- the treatment for generating the reactive oxygen is promoted in particular by using a protective gas during direct sintering, consisting of an inert gas / oxygen mixture, with only small amounts of oxygen being allowed to be added to the inert gas, preferably argon and / or nitrogen. These are of the order of magnitude of a partial pressure of 20 to 200 ppm, in particular at most 100 ppm. If more oxygen is added, the molybdenum on the surface oxidizes to Mo02 or MoO3. These substances are volatile and are not suitable for improving adhesion.
- FIG. 1 shows a metal halide lamp, in section, schematically
- Figure 2 is a schematic representation of the link mechanism
- Figure 3 shows a detail from Figure 1, schematically.
- FIG. 1 shows schematically a metal halide lamp with an outer bulb 1 made of tempered glass or quartz glass, which has a longitudinal axis and is closed on one side by a melted plate 2.
- Two power leads are routed to the outside of the plate melt 2 (not visible). They end in a base 5.
- a ceramic discharge vessel 10 made of Al 2 O 3 (PCA) with a metal halide filling is sealed axially in the outer bulb.
- the discharge vessel 10 can be cylindrical or internally spherical or elliptical with capillary ends 21.
- Electrodes 3 which are fastened to bushings made of MoV, protrude into the discharge vessel.
- the feedthrough is preferably a tube, but can also be a pin.
- the implementation can also be divided into two and only the front end of the implementation can consist of MoV.
- ignitable gas from the group of noble gases there is an ignitable gas from the group of noble gases in the discharge vessel.
- metal halides as known per se in the discharge vessel, for example iodides of Na Tl and Dy and, if appropriate, mercury. Ca can also be used as the halide.
- FIG 2 the connection between the MoV pipe and an Al 2 0 3 plug is shown in detail.
- the bushing 6 made of a molybdenum-vanadium alloy with 30% by weight of vanadium is shown as a base material 11, on the surface of which a thin first layer 12 of Alx-MoyVz with a high proportion of Al is formed. This layer is formed by an alitation process. Under ge ⁇ suitable reaction conditions chosen diffuses A- luminium into deeper layers of implementation, so that one or more thin layers 13 of AlxMoyVz arise which contain less proportion of Al, and the see intermediate the first thin layer and the base body of MoV is trained. This sequence of layers is achieved by the diffusion of the aluminum into the surface of the MoV pipe.
- the alitation takes place at 700 to 1200 0 C over a period of the order of a few hours.
- the alitated MoV pipe is now inserted in the green stopper and sintered directly.
- the aluminum from the AlxMoyVz layer on the surface of the bushing reacts with the oxygen portion of the plug 14 made of Al 2 O 3 , so that a thin adhesive layer 20 forms on the surface of the plug above the base body 15.
- the layers 12, 13 made of the intermetallic phases together form the new adhesion layer 20, the partially full text or predominantly consists ⁇ dig from a cermet consisting of Mo and Al 2 O 3.
- FIG. 3 shows another exemplary embodiment in which a MoV tube is inserted directly into the end 21 of a ceramic discharge vessel. It is through direct sintering, similar to that described in Figure 2.
- the implementation is shown as a MoV pipe 11, to which the end 21 is connected to the outside via the novel adhesive layer 20.
- the toothing is not shown to scale.
- the implementation does not have to completely Molyb ⁇ Danish-vanadium alloy. It is sufficient if it partly consists of MoV in the part to be sealed. In ⁇ play a rear part of the bushing can be made of niobium, as known per se, or the MoV part may have a core of another material, as is also known per se.
- the PCA part in which the bushing is sintered directly can be, for example, a stopper, or the end of the discharge vessel, or another intermediate part.
- PCA stands for polyceramic Al 2 O 3 , as is known per se.
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Glass Compositions (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005058895A DE102005058895A1 (de) | 2005-12-09 | 2005-12-09 | Metallhalogenidlampe |
| PCT/EP2006/069038 WO2007065819A2 (de) | 2005-12-09 | 2006-11-29 | Metallhalogenidlampe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1958238A2 true EP1958238A2 (de) | 2008-08-20 |
| EP1958238B1 EP1958238B1 (de) | 2009-09-30 |
Family
ID=37988959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06819826A Not-in-force EP1958238B1 (de) | 2005-12-09 | 2006-11-29 | Metallhalogenidlampe |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US7863819B2 (de) |
| EP (1) | EP1958238B1 (de) |
| JP (1) | JP4773527B2 (de) |
| CN (1) | CN100578726C (de) |
| AT (1) | ATE444562T1 (de) |
| CA (1) | CA2631372A1 (de) |
| DE (2) | DE102005058895A1 (de) |
| WO (1) | WO2007065819A2 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7923932B2 (en) * | 2007-08-27 | 2011-04-12 | Osram Sylvania Inc. | Short metal vapor ceramic lamp |
| CN100570810C (zh) * | 2008-11-19 | 2009-12-16 | 宁波亚茂照明电器有限公司 | 陶瓷金属卤化物灯电弧管 |
| WO2012048986A1 (de) * | 2010-10-11 | 2012-04-19 | Osram Ag | Infrarotstrahler |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7405715A (de) | 1973-06-22 | 1974-12-24 | ||
| US4366410A (en) | 1980-11-21 | 1982-12-28 | Gte Laboratories Incorporated | Vacuum-tight assembly particularly for a discharge tube |
| US4545799A (en) * | 1983-09-06 | 1985-10-08 | Gte Laboratories Incorporated | Method of making direct seal between niobium and ceramics |
| JPH02156534A (ja) * | 1988-12-08 | 1990-06-15 | Fujitsu Ltd | 半導体装置及び半導体装置の製造方法 |
| JP3081765B2 (ja) * | 1994-11-17 | 2000-08-28 | トーカロ株式会社 | 炭素部材およびその製造方法 |
| JPH1145682A (ja) * | 1997-07-26 | 1999-02-16 | Toto Ltd | ランプ、導電性材料及びその製造方法 |
| JPH10334852A (ja) * | 1997-05-30 | 1998-12-18 | Iwasaki Electric Co Ltd | メタルハライドランプ |
| DE19727428A1 (de) * | 1997-06-27 | 1999-01-07 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Metallhalogenidlampe mit keramischem Entladungsgefäß |
| WO2000034980A1 (en) * | 1998-12-08 | 2000-06-15 | Koninklijke Philips Electronics N.V. | Electric lamp |
| JP2003297289A (ja) * | 2002-01-30 | 2003-10-17 | Toshiba Lighting & Technology Corp | 高圧放電ランプおよび多重管形高圧放電ランプならびに照明装置 |
| DE10220735A1 (de) * | 2002-05-08 | 2003-11-20 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Verfahren zum Herstellen einer Metall-Keramik-Verbindung |
| CN1969366B (zh) * | 2004-06-14 | 2011-06-08 | 皇家飞利浦电子股份有限公司 | 陶瓷金属卤化物放电灯 |
-
2005
- 2005-12-09 DE DE102005058895A patent/DE102005058895A1/de not_active Withdrawn
-
2006
- 2006-11-29 DE DE502006005007T patent/DE502006005007D1/de active Active
- 2006-11-29 EP EP06819826A patent/EP1958238B1/de not_active Not-in-force
- 2006-11-29 JP JP2008543775A patent/JP4773527B2/ja not_active Expired - Fee Related
- 2006-11-29 CA CA002631372A patent/CA2631372A1/en not_active Abandoned
- 2006-11-29 CN CN200680045665A patent/CN100578726C/zh not_active Expired - Fee Related
- 2006-11-29 AT AT06819826T patent/ATE444562T1/de not_active IP Right Cessation
- 2006-11-29 US US12/086,076 patent/US7863819B2/en not_active Expired - Fee Related
- 2006-11-29 WO PCT/EP2006/069038 patent/WO2007065819A2/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007065819A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100578726C (zh) | 2010-01-06 |
| JP4773527B2 (ja) | 2011-09-14 |
| CN101322221A (zh) | 2008-12-10 |
| JP2009518792A (ja) | 2009-05-07 |
| CA2631372A1 (en) | 2007-06-14 |
| DE102005058895A1 (de) | 2007-06-14 |
| WO2007065819A2 (de) | 2007-06-14 |
| DE502006005007D1 (de) | 2009-11-12 |
| US7863819B2 (en) | 2011-01-04 |
| EP1958238B1 (de) | 2009-09-30 |
| ATE444562T1 (de) | 2009-10-15 |
| US20090134796A1 (en) | 2009-05-28 |
| WO2007065819A3 (de) | 2008-03-20 |
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