US3657589A - Mercury generation - Google Patents

Mercury generation Download PDF

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Publication number
US3657589A
US3657589A US78839A US3657589DA US3657589A US 3657589 A US3657589 A US 3657589A US 78839 A US78839 A US 78839A US 3657589D A US3657589D A US 3657589DA US 3657589 A US3657589 A US 3657589A
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Prior art keywords
mercury
holder
particulate
getter
ti3hg
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US78839A
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English (en)
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Paolo Della Porta
Mauro Rebaudo
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SAES Getters SpA
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SAES Getters SpA
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H01J9/395—Filling vessels

Definitions

  • Electron tubes containing mercury are well known in the art. In the past these tubes have usually been charged with mercury in its liquid form. However, such a procedure suffers from a number of disadvantages inherent in the storage and handling of liquid mercury due to its toxicity and other difficulties inherent in the handling of a liquid metal.
  • Another disadvantage of the use of mercuric oxide and a reducing agent is the relatively low temperature of approximately 250 C at which the mercury releasing reductive reaction takes place. This relatively low temperature places an upper limit upon the temperature to which the electron tube can be raised during the degassing procedure which under conventional manufacturing techniques frequently precedes mercury release.
  • Another disadvantage of prior mercury vapor releasing compositions is the relatively low weight percent, frequently less than weight percent, of releasable mercury.
  • an object of the present invention to provide an improved mercury releasing getter device, an improved mercury vapor generating composition and an improved method of charging an electron tube with mercury all of which is substantially free of one or more disadvantages of the prior art.
  • Another object is to provide a means by which mercury can be generated in evacuated and sealed electron tubes which avoids the danger of gas release.
  • Another object is to provide a means for mercury generation which avoids the danger of concurrent oxygen release.
  • a further object is to provide means for mercury generation ture degassing can be performed.
  • a still further object is to provide means for mercury generation employing a noxious gas sorptive non-evaporable getter material which after mercury release has a sufficient sorptive capacity to perform gettering functions throughout the life of the tube.
  • Yet another object is to provide a mercury vapor generating composition which has a high weight percent of releasable mercury.
  • FIG. 1 is a top view of a mercury releasing getter device of the present invention
  • FIG. 2 is a sectional view taken along the line 22 of FIG.
  • FIG. 3 is a top view of a modified mercury releasing getter device of the present invention.
  • FIG. 4 is a sectional view taken along line 4-4 of FIG. 3.
  • FIGS. 5 and 6 are further mercury releasing getter devices.
  • FIG. 7 is a perspective view of a fluorescent lamp electrode employing a getter device of the present invention.
  • a mercury releasing getter device comprising a holder and a mercury vapor generating composition carried by the holder, wherein the mercury vapor generating composition is an intermetallic compound of mercury and one or more metals selected from the group consisting of zirconium and titanium.
  • the preferred intermetallic compounds useful in the present invention are those of the formula:
  • Zr ,Ti,,Hg wherein x and have any value from zero to 13 with the proviso that the sum of x and y is any value from three to 13 and z is one or two.
  • suitable compounds of the aforementioned formula include among others Zr TiHg, Zr Ti Hg, Zr Ti I-lg Zr,,l-lg, Ti I-lg, as well as Zr Hg and I Ti l-lg.
  • Ti Hg has two crystalline forms, namely fiTi l-lg and -yTi Hg.
  • both are suitable because the temperature at which they release mercury is high enough to permit degassing at high temperatures without danger of mercury release and still is low enough to avoid danger of melting or warping the holder.
  • the preferred intermetallic compounds employed in the present invention are characterized by having properties, such as for example, thermal stability different from those that could be foreseen based upon the properties of the individual components. Further these intermetallic compounds have characteristic X-ray diffraction spectra. They can be produced by a variety of known procedures such as those described by Pietrokowsky, supra.
  • the intermetallic compound can be employed in any physical form such as a block, a strip or the like but is preferably employed as a finely divided particulate solid and generally that which passes through a U.S. standard screen of 10 mesh per inch and preferably that which passes through a screen of 70 mesh per inch. Even very fine particles such as those which pass through a screen of 600 mesh per inch can also be employed.
  • non-evaporable getter materials are characterized by (l) a sorptive capacity for noxious gases such as oxygen, carbon monoxide, and water vapor, and (2) a vapor pressure at 1,000 C of less than 10 torr.
  • suitable nonevaporable getter materials include among others zirconium, titanium, tantalum, niobium, vanadium and mixtures thereof, alloys thereof with one another and with other metals such as aluminum, which alloys have satisfactory gettering properties.
  • the preferred non-evaporable getter material is an alloy of from 5 to 30 and preferably l3 to l8 weight percent aluminum balance zirconium.
  • the most preferred getter metal is one of 16 percent aluminum balance zirconium available from SAES Getters S.p.A. Milan, Italy, under the trademark St 101.
  • the non-evaporable getter material can be employed in any suitable physical form but is preferably employed as a finely divided particulate solid such as one passing through a US. standard screen of mesh per inch and preferably that passing through a screen of 70 mesh per inch and being retained on a screen of 60 mesh per inch.
  • the mixtures of particulate mercury releasing intennetallic compound and particulate getter material is pressed into the cavity of an annular ring whereas in another embodiment this mixture is pressed onto a thin metallic substrate.
  • the weight ratio of intermetallic compound to getter material can vary widely but generally is 100:1 to 1:100 and preferably 50:1 to 1:50. At greater ratios of mercury releasing compound the gas sorptive capacity of the residue is not substantially increased by the getter material. At lower ratios of mercury releasing compound the percentage of releasable mercury in the mixture decreases to an impractical level.
  • the holder can be in any physical shape which will carry the mercury vapor generating composition.
  • the holder is an annular ring similar to the commonly employed to hold vaporable getter metals such as barium.
  • the holder is a substrate which is preferably metallic and which has the particulate mercury vapor releasing composition embedded in at least one of its surfaces.
  • the same substrate may be used as a support for other materials which might be useful within the tube such as getter materials.
  • the holder is in the form of a wire or rod around which is formed a pill or pellet of the mercury vapor releasing composition.
  • the present invention is applicable to a wide variety of mercury containing electron tubes examples of which include among others thyratrons, fluorescent light tubes, lasers, mercury rectifiers, various type of alpha numerical display tubes.
  • the holder is in the form of an annular ring 11 having a cavity 12, and a mercury vapor releasing composition 13 within the cavity 12.
  • FIGS. 3 and 4 there is shown a getter device 30 which is connected to a similar getter device 30 which in turn is connected to yet another similar getter device 30".
  • the getter devices 30,30, 30", etc. form a continuous running length of devices.
  • the holder is in the form of a substrate 31 having the mercury releasing composition 32 in particulate form partially embedded in the upper and lower planar surfaces of the substrate 31.
  • the getter device 30, for example is separated from the devices 30 and 30" by severing the substrate 31 in the vicinity of the small bridging attachments 33, 34, 35 and 36.
  • FIG. 5 shows a mercury evaporating getter device 50 in the form of a pellet in which the holder is in the form of a rod 51 having the mercury releasing composition 52 compressed around and supported by said rod.
  • FIG. 6 shows a mercury evaporating getter device 60 in the form of a pellet in which the holder 61 is a wire of high ohmic resistance in the form of a heating coil 62 around which is formed the mercury releasing composition 63.
  • an improved method for charging an electron tube with mercury comprising the steps of inserting into the tube the above described mercury releasing compositions preferably by means of one of the above described getter devices and then heating the composition to liberate the mercury.
  • the heating can be accomplished by any suitable means such as by radiation, by high frequency induction heating, or by passing a current through the getter device when it is constructed of a material of high ohmic resistance.
  • the heating is conducted at a temperature which will liberate the mercury from the mercury releasing composition. To a certain extent this temperature will be dependent upon the composition of the intennetallic compound.
  • a temperature above 500 C and preferably from 550 C to 950 C is suitable.
  • An important feature of the present invention is that the thermal decomposition of the intennetallic compound of zirconium and/or titanium with mercury leaves the zirconium and/or titanium gas sorptive such that it functions as a getter metal throughout the life of the tube.
  • the heating of the composition to release mercury is sufficient to activate the getter metal.
  • Another important feature of the present invention is the ability to add other chemical compositions in mixture with the mercury releasing compound.
  • Particulate titanium 143.7 g which passes through a standard screen with 400 mesh per inch is placed in a stainless steel crucible with mercury (200.6 g). The crucible is then closed and heated to about 800 C for about 3 hours. The resultant alloy is determined by X-ray diffraction to consist essentially of the compound 'yTi l-lg.
  • Example 2 The procedure of Example 1 is repeated employing the same times, conditions and ingredients except that the titanium is replaced by zirconium (273.7 g).
  • the resultant alloy is determined to consist essentially of the compound Zr Hg.
  • EXAMPLE 3 This example illustrates the use of an intermetallic compound and a non-evaporable getter material.
  • Example 1 The yTi Hg (200 mg) of Example 1 is mixed with St 101 alloy (200 mg). Both the Ti l-lg and the St 101 alloy are of particle size such that they pass through a screen of 400 mesh per inch. The resultant mixture is pressed into an annular ring to produce a mercury releasing getter device similar to the device 10 shown in FIGS. 1 and 2, containing a coherent particulate composition 13.
  • This device is mounted in an electron tube and heated by surrounding the device 10 with a high frequency induction coil to heat the getter device 10 to 950 C for 30 seconds to rellease at least 60 mg of the mercury and activate the St 101 a 0y.
  • EXAMPLE 4 This example illustrates the manufacture and use of mercury releasing getter devices similar to those shown in FIGS. 3 and 4.
  • a mixture of Ti Hg g) and St 101 (100 g) is placed on a substrate of steel and pressed into the substrate as described in Italian Pat. No. 746,551 and US. application Ser. No. 33,794 filed May 1, 1970 to produce a strip of getter devices in which the mixture is distributed with a density of 30 mglcm similar to that shown in FIGS. 3 and 4 of the annexed drawings.
  • the getter device 30 is then placed in a vacuum tube which is then evacuated and the device 30 is heated to 850-900 C for to seconds to release mercury and activate the St 101 getter metal.
  • the tube functions properly with respect to its mercury environment while continuing to sorb gases within the tube.
  • EXAMPLE 5 The procedure of Example 4 is repeated except that the slits forming the bridging attachments 33, 34, 35 and 36 are omitted and the resultant strip formed into a circle around a fluorescent lamp electrode as shown in F IG. 7.
  • EXAMPLE 9 This example illustrates the synthesis of a ternary intermetallic compound of the formula Ti Zr l-lg Particulate titanium-zirconium alloy (208.7 g) having 34.1 percent titanium balance zirconium which passes though a standard screen with 400 mesh per inch is placed in a stainless steel crucible with mercury (200.6 g). The crucible is then closed and heated to about 800 C for about 3 hours. The resultant intermetallic compound when heated releases mercury at a temperature approximately 100 C higher than for either Ti Hg or Zr llg.
  • a mercury releasing getter device comprising a holder and a mercury vapor generating composition carried by the holder, wherein the mercury vapor generating composition is an intermetallic compound of mercury and one or more metals selected from the group consisting of zirconium and titanium.
  • a mercury releasing getter device comprising a holder and a mercury vapor generating composition and a getter material carried by the holder wherein the mercury vapor generating composition comprises:
  • An intermetallic compound of mercury and one or more metals selected from the group consisting of zirconium and titanium, wherein the getter materials is:
  • a mercury releasing getter device of claim 2 comprising an annular ring having therein a coherent particulate mixture of:
  • a mercury releasing getter device comprising a metallic strip having embedded therein:
  • a mercury releasing getter device for introducing mercury into a fluorescent lamp, said device comprising:
  • Ti Hg embedded in at least one surface of the strip, wherein the Ti Hg has a particle size such that it passes through a [1.8. standard screen of 70 mesh per inch; said strip being formable into-a circle around an electrode of the fluorescent lamp whereby thermal decomposition of the Ti l-lg releases mercury into the lamp leaving gas sorptive titanium on the strip.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Discharge Lamp (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Gas Separation By Absorption (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Gas-Filled Discharge Tubes (AREA)
US78839A 1969-10-20 1970-10-07 Mercury generation Expired - Lifetime US3657589A (en)

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IT2358269 1969-10-20

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US00218684A Expired - Lifetime US3733194A (en) 1969-10-20 1972-01-18 Mercury generation

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US (2) US3657589A (fr)
JP (1) JPS495659B1 (fr)
DE (1) DE2050838C3 (fr)
FR (1) FR2066110A5 (fr)
GB (1) GB1333724A (fr)
NL (1) NL172498C (fr)

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5084074A (fr) * 1973-11-28 1975-07-07
JPS5084078A (fr) * 1973-11-28 1975-07-07
US4107565A (en) * 1975-04-02 1978-08-15 Tokyo Shibaura Electric Co., Ltd. Mercury emitting structure
US4464133A (en) * 1982-04-05 1984-08-07 Gte Laboratories Incorporated Method of charging a vessel with mercury
US4539508A (en) * 1981-12-04 1985-09-03 U.S. Philips Corporation Method of producing a low-pressure mercury vapor discharge lamp
US4553067A (en) * 1982-02-10 1985-11-12 Gte Products Corporation Method of dispensing mercury into a fluorescent lamp and lamp to operate with method
EP0228005A2 (fr) * 1985-12-19 1987-07-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Elément de stockage pour doser et introduire du mercure liquide dans une lampe à décharge
US4691141A (en) * 1985-10-11 1987-09-01 Gte Laboratories Incorporated Dosing composition for high pressure sodium lamps
US4754193A (en) * 1985-11-08 1988-06-28 Gte Products Corporation Mercury dispenser for arc discharge lamps
US5022882A (en) * 1983-03-10 1991-06-11 Gte Products Corporation Arc tube dosing process for unsaturated high pressure sodium lamp
US5026311A (en) * 1983-03-10 1991-06-25 Gte Products Corporation Arc tube fabrication process
EP0691670A2 (fr) 1994-07-07 1996-01-10 Saes Getters S.P.A. Combinaison de matériaux pour dispositifs dispensateurs de mercure, méthode de préparation et dispositifs ainsi obtenus
EP0737995A2 (fr) * 1995-04-10 1996-10-16 Saes Getters S.P.A. Combinaison de matériaux pour dispositifs intégrés de getter et d'apport de mercure et dispositif émisé obtenus
WO1997000532A1 (fr) * 1995-06-16 1997-01-03 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Procede de fabrication d'une bande de rallonge pour lampes a decharge et bande de rallonge pour lampes a decharge
DE19528390A1 (de) * 1995-08-02 1997-02-06 Sli Lichtsysteme Gmbh Metallband, insbesondere Stahlband, zur Herstellung von Schilden für den Einbau in insbesondere Niederdruck-Entladungslampen
WO1997019461A1 (fr) * 1995-11-23 1997-05-29 Saes Getters S.P.A. Procede de production d'un dispositif de diffusion du mercure, de sorption de gaz reactifs et de blindage d'electrode dans des lampes fluorescentes, et dispositif ainsi produit
WO1997021239A1 (fr) * 1995-12-06 1997-06-12 Saes Getters S.P.A. Procede de fabrication d'ecrans de differentes dimensions pour lampes fluorescentes, et ecrans ainsi obtenus
US5846109A (en) * 1996-09-30 1998-12-08 General Electric Company Oxygen control agents for fluorescent lamps
US20020036468A1 (en) * 2000-09-22 2002-03-28 Matsushita Electric Industrial Co., Ltd. Mercury-containing material, method for producing the same and fluorescent lamp using the same
US6680571B1 (en) * 1997-05-22 2004-01-20 Saes Getters S.P.A. Device for introducing small amounts of mercury into fluorescent lamps
US6679745B2 (en) 2000-03-06 2004-01-20 Saes Getters S.P.A. Method for the manufacture of mercury dispenser devices to be used in fluorescent lamps
DE10047440B4 (de) * 1999-09-21 2004-04-29 Sli Lichtsysteme Gmbh Trägermaterial
US6781303B2 (en) 2001-09-10 2004-08-24 Light Sources, Inc. Mercury vapor lamp amalgam target
US6910932B2 (en) 2000-04-12 2005-06-28 Advanced Lighting Technologies, Inc. Solid mercury releasing material and method of dosing mercury into discharge lamps
US20070216282A1 (en) * 2006-03-16 2007-09-20 Kiermaier Ludwig P Lamp electrode and method for delivering mercury
US20070216308A1 (en) * 2006-03-16 2007-09-20 Kiermaier Ludwig P Lamp electrode and method for delivering mercury
US20070235686A1 (en) * 2004-07-23 2007-10-11 Saes Getters S.P.A. Mercury Dispensing Compositions and Manufacturing Process Thereof
US20090032767A1 (en) * 2005-01-17 2009-02-05 Saes Getters S.P.A. Mercury Dispensing Compositions and Device Using the Same
US20100001230A1 (en) * 2006-07-11 2010-01-07 Saes Getters S.P.A. Mercury releasing method
ITMI20082187A1 (it) * 2008-12-11 2010-06-12 Getters Spa Sistema dispensatore di mercurio per lampade a fluorescenza
US20100259167A1 (en) * 2007-12-21 2010-10-14 Alessio Corazza Mercury dispensing devices with a reduced particle loss
CN101436510B (zh) * 2007-11-13 2010-12-15 喜星素材株式会社 用于向blu用荧光灯导入汞的吸气剂组合物及其装置
WO2011006811A1 (fr) 2009-07-15 2011-01-20 Saes Getters S.P.A. Support pour éléments filiformes contenant une substance active
WO2011104145A1 (fr) 2010-02-23 2011-09-01 Saes Getters S.P.A. Procédé et système pour la distribution contrôlée de mercure et dispositifs fabriqués par l'intermédiaire de ce procédé
US8253331B2 (en) 2010-04-28 2012-08-28 General Electric Company Mercury dosing method for fluorescent lamps
WO2013179167A1 (fr) 2012-05-31 2013-12-05 Saes Getters S.P.A. Composition de dosage de mercure améliorée
ITMI20131658A1 (it) * 2013-10-08 2015-04-09 Getters Spa Combinazione di materiali per dispositivi di rilascio di mercurio e dispositivi contenenti detta combinazione di materiali

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5115673B2 (fr) * 1971-09-23 1976-05-18
IT963874B (it) * 1972-08-10 1974-01-21 Getters Spa Dispositivo getter perfezionato contenente materiale non evapora bile
GB2176335B (en) * 1985-06-04 1989-12-06 English Electric Valve Co Ltd Discharge tubes
IT1273338B (it) * 1994-02-24 1997-07-08 Getters Spa Combinazione di materiali per dispositivi erogatori di mercurio metodo di preparazione e dispositivi cosi' ottenuti
US5898272A (en) * 1997-08-21 1999-04-27 Everbrite, Inc. Cathode for gas discharge lamp
ITMI20042516A1 (it) * 2004-12-27 2005-03-27 Getters Spa Processo per produrre mediante deposizione di lega bassofondente dispositivi portanti almeno un materiale attivo
JPWO2009098860A1 (ja) * 2008-02-06 2011-05-26 パナソニック株式会社 水銀放出体、それを用いた低圧放電ランプの製造方法、低圧放電ランプ、照明装置および液晶表示装置
ITMI20091255A1 (it) * 2009-07-15 2011-01-16 Getters Spa Supporto per elementi filiformi contenenti un materiale attivo

Citations (2)

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US3318649A (en) * 1963-10-11 1967-05-09 King Lab Inc Charging electronic tubes with mercury
US3385644A (en) * 1965-06-08 1968-05-28 Getters Spa Process for filling with mercury discharge tubes and for absorbing residual noxious gases

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3318649A (en) * 1963-10-11 1967-05-09 King Lab Inc Charging electronic tubes with mercury
US3385644A (en) * 1965-06-08 1968-05-28 Getters Spa Process for filling with mercury discharge tubes and for absorbing residual noxious gases

Cited By (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5084078A (fr) * 1973-11-28 1975-07-07
JPS5327112B2 (fr) * 1973-11-28 1978-08-05
JPS5084074A (fr) * 1973-11-28 1975-07-07
US4107565A (en) * 1975-04-02 1978-08-15 Tokyo Shibaura Electric Co., Ltd. Mercury emitting structure
US4539508A (en) * 1981-12-04 1985-09-03 U.S. Philips Corporation Method of producing a low-pressure mercury vapor discharge lamp
US4553067A (en) * 1982-02-10 1985-11-12 Gte Products Corporation Method of dispensing mercury into a fluorescent lamp and lamp to operate with method
US4464133A (en) * 1982-04-05 1984-08-07 Gte Laboratories Incorporated Method of charging a vessel with mercury
US5022882A (en) * 1983-03-10 1991-06-11 Gte Products Corporation Arc tube dosing process for unsaturated high pressure sodium lamp
US5026311A (en) * 1983-03-10 1991-06-25 Gte Products Corporation Arc tube fabrication process
US4691141A (en) * 1985-10-11 1987-09-01 Gte Laboratories Incorporated Dosing composition for high pressure sodium lamps
US4754193A (en) * 1985-11-08 1988-06-28 Gte Products Corporation Mercury dispenser for arc discharge lamps
EP0228005A3 (en) * 1985-12-19 1989-05-10 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Storage element for dosing and introducing liquid mercury into a discharge lamp
EP0228005A2 (fr) * 1985-12-19 1987-07-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Elément de stockage pour doser et introduire du mercure liquide dans une lampe à décharge
US5831385A (en) * 1994-07-07 1998-11-03 Saes Getters S.P.A. Mercury dispensing composition containing Cu-Si alloy promoter
EP0691670A2 (fr) 1994-07-07 1996-01-10 Saes Getters S.P.A. Combinaison de matériaux pour dispositifs dispensateurs de mercure, méthode de préparation et dispositifs ainsi obtenus
US5916479A (en) * 1994-07-07 1999-06-29 Saes Getters S.P.A. Mercury dispensing device
EP0691670A3 (fr) * 1994-07-07 1997-12-17 Saes Getters S.P.A. Combinaison de matériaux pour dispositifs dispensateurs de mercure, méthode de préparation et dispositifs ainsi obtenus
US5830026A (en) * 1994-07-07 1998-11-03 Saes Getters S.P.A. Mercury dispensing device
EP0737995A2 (fr) * 1995-04-10 1996-10-16 Saes Getters S.P.A. Combinaison de matériaux pour dispositifs intégrés de getter et d'apport de mercure et dispositif émisé obtenus
CN1086504C (zh) * 1995-04-10 2002-06-19 工程吸气公司 汞释放复合材料、含这种材料的汞释放装置及其用途
EP0737995A3 (fr) * 1995-04-10 1998-07-01 Saes Getters S.P.A. Combinaison de matériaux pour dispositifs intégrés de getter et d'apport de mercure et dispositif émisé obtenus
WO1997000532A1 (fr) * 1995-06-16 1997-01-03 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Procede de fabrication d'une bande de rallonge pour lampes a decharge et bande de rallonge pour lampes a decharge
US5825127A (en) * 1995-06-16 1998-10-20 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Method for producing a cap band for discharge lamps
DE19528390A1 (de) * 1995-08-02 1997-02-06 Sli Lichtsysteme Gmbh Metallband, insbesondere Stahlband, zur Herstellung von Schilden für den Einbau in insbesondere Niederdruck-Entladungslampen
US6107737A (en) * 1995-11-23 2000-08-22 Saes Getters, S.P.A. Device for dispensing mercury, sorbing reactive gases, shielding electrodes in fluorescent lamps and a process for making such device
WO1997019461A1 (fr) * 1995-11-23 1997-05-29 Saes Getters S.P.A. Procede de production d'un dispositif de diffusion du mercure, de sorption de gaz reactifs et de blindage d'electrode dans des lampes fluorescentes, et dispositif ainsi produit
CN1109353C (zh) * 1995-11-23 2003-05-21 工程吸气公司 荧光灯内汞释放、活性气体吸附和电极屏蔽用的器件及其制造方法
WO1997021239A1 (fr) * 1995-12-06 1997-06-12 Saes Getters S.P.A. Procede de fabrication d'ecrans de differentes dimensions pour lampes fluorescentes, et ecrans ainsi obtenus
US5846109A (en) * 1996-09-30 1998-12-08 General Electric Company Oxygen control agents for fluorescent lamps
US6680571B1 (en) * 1997-05-22 2004-01-20 Saes Getters S.P.A. Device for introducing small amounts of mercury into fluorescent lamps
DE10047440B4 (de) * 1999-09-21 2004-04-29 Sli Lichtsysteme Gmbh Trägermaterial
US6679745B2 (en) 2000-03-06 2004-01-20 Saes Getters S.P.A. Method for the manufacture of mercury dispenser devices to be used in fluorescent lamps
US6910932B2 (en) 2000-04-12 2005-06-28 Advanced Lighting Technologies, Inc. Solid mercury releasing material and method of dosing mercury into discharge lamps
US6787980B2 (en) * 2000-09-22 2004-09-07 Matsushita Electric Industrial Co., Ltd. Mercury-containing material, method for producing the same and fluorescent lamp using the same
US20020036468A1 (en) * 2000-09-22 2002-03-28 Matsushita Electric Industrial Co., Ltd. Mercury-containing material, method for producing the same and fluorescent lamp using the same
US6781303B2 (en) 2001-09-10 2004-08-24 Light Sources, Inc. Mercury vapor lamp amalgam target
US7976776B2 (en) 2004-07-23 2011-07-12 Saes Getters S.P.A. Mercury dispensing compositions and manufacturing process thereof
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Also Published As

Publication number Publication date
DE2050838C3 (de) 1979-09-06
DE2050838B2 (de) 1973-04-05
DE2050838A1 (de) 1971-04-29
FR2066110A5 (fr) 1971-08-06
GB1333724A (en) 1973-10-17
NL172498B (nl) 1983-04-05
JPS495659B1 (fr) 1974-02-08
NL7015347A (fr) 1971-04-22
US3733194A (en) 1973-05-15
NL172498C (nl) 1983-09-01

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