US3657589A - Mercury generation - Google Patents
Mercury generation Download PDFInfo
- 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
- Authority
- US
- United States
- Prior art keywords
- mercury
- holder
- particulate
- getter
- ti3hg
- 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
Images
Classifications
-
- 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.
Landscapes
- 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-Filled Discharge Tubes (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Gas Separation By Absorption (AREA)
Abstract
Mercury releasing getter devices employing intermetallic compounds of mercury with zirconium and/or titanium such as Zr3Hg and Ti3Hg.
Description
United States Patent Della Porta et a1. 5] Apr. 18, 1972 [54] MERCURY GENERATION [72] Inventors: Paolo Della Porta; Mauro Rebaudo, both [56] Rem-mm cmd man, UNITED STATES PATENTS [7'31 Assign: Gem's Mil, Italy 3,318,649 5/1967 Keller et a1. ..316/3- [22] Filed: Oct. 7, 1970 3,385,644 5/1963 Della Porta et a1. ..316/16 l 1 1 P N04 78,839 Primary Examiner-Roy Lake I Assistant Examiner-Darwin R. l-lostetter [30] Foreign Application Priority Data Attorney-Murphy and Dobyns Oct. 20, 1969 Italy ..23582-A/69 ABSTRACT 75/20 R, 252/1315, Mercury releasing getter devices employing intermetallic I 316/3 compounds of mercury with zirconium and/or titanium such [51] lnt. Cl. 3 5 zr l-[g and Ti flg [58] Field oiSearch ..252/181.6;313/174,176,177,
8 Claims, 7 Drawing Figures P'ATENTEBAPR I8 |972 SHEE? 10F 2 FIG 13 FIG. 2 1211 1o III (all I 32 INVENTORS PAOLO dELLA POR'I'A MAURO REBAUDO ly 40% m ATTORNEY-5 MERCURY GENERATION 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.
There is present in the art a long felt need for an alternative to the use of liquid mercury. It has been proposed to introduce mercury into electron tubes in the form of a thermally decomposable compound of mercury. Examples of such prior attempts are disclosed in Rigot, U.S. Pat. No. 3,401,296 relating to the use of mercury pyrophosphate. Another procedure is by the use of a compound of mercury such as mercuric oxide and a reducing agent for the compound of mercury such as zirconium-aluminum alloy as described in della Porta et al., U.S. Pat. No. 3,385,644. Unfortunately, the use of compounds of mercury suffers from a number of disadvantages such as the inherent danger of releasing noxious gases such as oxygen during mercury release.
The release of mercury after the tube has been evacuated and sealed is considered dangerous, if not impossible as the release of oxygen and other gases cause a loss of vacuum and other harmful effects within the tube.
Even if oxygen or other gases are released while the tube is being evacuated, due to mercury generation during the evacuation, the oxygen or other gases can still have harmful effects within the tube, on the electrodes for example.
To minimize the danger of release of oxygen it has been proposed to mix the mercury releasing compound with a nonevaporable getter metal such as zirconium. The intended func tion of this getter material is to sorb the noxious gases which may be released concurrently with mercury release from the compound of mercury.
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.
In an attempt to overcome the disadvantages inherent in the use of compounds of mercury it has been suggested in Keller et al., U.S. Pat. No. 3,318,649 to employ an alloy of mercury with magnesium.
Keller also suggests the use of a ternary alloy of mercury, magnesium and nickel.
However it has been shown that binary alloys of magnesium and mercury have generally proved unsatisfactory because of the low temperature at which mercury is released. When the mercury recombines with the magnesium undesirable gases which may have been sorbed by the magnesium can be released. Furthermore evaporation of magnesium can take place at the low temperature at which the mercury is released.
The addition of nickel to form a ternary alloy as suggested by Keller has led to only relatively limited improvements.
Another disadvantage of prior mercury vapor releasing compositions is the relatively low weight percent, frequently less than weight percent, of releasable mercury.
Accordingly, it is 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.
Additional objects and advantages of the present invention will be apparent by reference to the following detailed description thereof and drawings wherein:
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; and,
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.
According to the present invention there is provided 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. Examples of 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. As described by Pietrokowsky in Journal of Metals" (February 1954) pages 219-226, Ti Hg has two crystalline forms, namely fiTi l-lg and -yTi Hg.
In the present invention 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.
Although the above described intermetallic compounds can be employed alone, in another embodiment of the present invention they are mixed with a non-evaporable getter material. These 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. Examples of 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. In one embodiment 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. In one embodiment the holder is an annular ring similar to the commonly employed to hold vaporable getter metals such as barium. In another embodiment 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.
In a further embodiment 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.
Referring now to the drawings and in particular to FIGS. 1 and 2 there is shown a mercury releasing getter device 10 of the present invention. In the getter device 10 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.
Referring now to 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. In the device 30 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. In operation 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.
According to another aspect of the present invention there is provided 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. For Ti l-lg and Zr I-Ig a temperature above 500 C and preferably from 550 C to 950 C is suitable. At temperatures much below 500 C mercury is not released whereas at temperatures above 950 C the release is so rapid that a danger of creating loose particles by thermal fracturing of the alloy exists. Another disadvantage of employing temperatures above 950 C is the danger of undesirable noxious gas release from adjacent portions of the electron tube which tend to also be heated.
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.
The invention is further illustrated by the following examples in which all parts and percentages are by weight unless otherwise indicated. These non-limiting examples are illustrative of certain embodiment designed to teach those skilled in the art how to practice the invention and to represent the best mode contemplated for carrying out the invention.
EXAMPLE I This example illustrates the synthesis of an intennetallic compound useful in the present invention.
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.
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.
EXAMPLES 6-8 Compound Example Quantity of Titanium produced (No) (g) 6 191.6 Ti,Hg
7 239.5 Ti Hg 8 287.4 Ti,H g
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.
Although the invention has been described in considerable detail with reference to certain preferred embodiments thereof, it will be understood that variations and modifications can be effected within the spirit and scope of the invention as described above and as defined in the appended claims.
What is claimed is:
1. 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.
2. The mercury releasing device of claim 1 wherein the intermetallic compound is one of the formula:
Zr,Ti,,l-lg, wherein x and y have any value from 0 to 13 with the proviso that the sum of x and y is any value from 3 to 13, and z is l or 2 3. A mercury releasing getter device of claim 2 holder and Ti Hg carried by the holder.
4. A mercury releasing getter device of claim 2 holder and Zr l-lg carried by the holder.
5. 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:
A. An intermetallic compound of mercury and one or more metals selected from the group consisting of zirconium and titanium, wherein the getter materials is:
B. a non-evaporable getter material.
6. A mercury releasing getter device of claim 2 comprising an annular ring having therein a coherent particulate mixture of:
A. particulate Ti Hg B. a particulate alloy of 13 to 18 weight percent aluminum balance zirconium, wherein the weight ratio of A;B is 50:1 to 1:50.
7. A mercury releasing getter device comprising a metallic strip having embedded therein:
A. particulate Ti l-lg B. a particulate alloy of 13 to 18 weight percent aluminum balance zirconium, wherein the weight ratio of A;B is 50:1 to 1:50.
8. A mercury releasing getter device for introducing mercury into a fluorescent lamp, said device comprising:
A. a substantially planar metallic strip;
B. particulate 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.
comprising a comprising a
Claims (7)
- 2. The mercury releasing device of claim 1 wherein the intermetallic compound is one of the formula: ZrxTiyHgz wherein x and y have any value from 0 to 13 with the proviso that the sum oF x and y is any value from 3 to 13, and z is 1 or 2.
- 3. A mercury releasing getter device of claim 2 comprising a holder and Ti3Hg carried by the holder.
- 4. A mercury releasing getter device of claim 2 comprising a holder and Zr3Hg carried by the holder.
- 5. 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: A. An intermetallic compound of mercury and one or more metals selected from the group consisting of zirconium and titanium, wherein the getter materials is: B. a non-evaporable getter material.
- 6. A mercury releasing getter device of claim 2 comprising an annular ring having therein a coherent particulate mixture of: A. particulate Ti3Hg B. a particulate alloy of 13 to 18 weight percent aluminum balance zirconium, wherein the weight ratio of A;B is 50:1 to 1:50.
- 7. A mercury releasing getter device comprising a metallic strip having embedded therein: A. particulate Ti3Hg B. a particulate alloy of 13 to 18 weight percent aluminum balance zirconium, wherein the weight ratio of A;B is 50:1 to 1:50.
- 8. A mercury releasing getter device for introducing mercury into a fluorescent lamp, said device comprising: A. a substantially planar metallic strip; B. particulate Ti3Hg embedded in at least one surface of the strip, wherein the Ti3Hg has a particle size such that it passes through a U.S. 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 Ti3Hg releases mercury into the lamp leaving gas sorptive titanium on the strip.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2358269 | 1969-10-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3657589A true US3657589A (en) | 1972-04-18 |
Family
ID=11208306
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US78839A Expired - Lifetime US3657589A (en) | 1969-10-20 | 1970-10-07 | Mercury generation |
US00218684A Expired - Lifetime US3733194A (en) | 1969-10-20 | 1972-01-18 | Mercury generation |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00218684A Expired - Lifetime US3733194A (en) | 1969-10-20 | 1972-01-18 | Mercury generation |
Country Status (6)
Country | Link |
---|---|
US (2) | US3657589A (en) |
JP (1) | JPS495659B1 (en) |
DE (1) | DE2050838C3 (en) |
FR (1) | FR2066110A5 (en) |
GB (1) | GB1333724A (en) |
NL (1) | NL172498C (en) |
Cited By (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5084074A (en) * | 1973-11-28 | 1975-07-07 | ||
JPS5084078A (en) * | 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 (en) * | 1985-12-19 | 1987-07-08 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Storage element for dosing and introducing liquid mercury into a discharge lamp |
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 (en) | 1994-07-07 | 1996-01-10 | Saes Getters S.P.A. | A combination of materials for mercury-dispensing devices, method of preparation and devices thus obtained |
EP0737995A2 (en) * | 1995-04-10 | 1996-10-16 | Saes Getters S.P.A. | A combination of materials for integrated getter and mercury-dispensing devices and devices thus obtained |
WO1997000532A1 (en) * | 1995-06-16 | 1997-01-03 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Process for manufacturing a cap strip for discharge lamps and a cap strip for discharge lamps |
DE19528390A1 (en) * | 1995-08-02 | 1997-02-06 | Sli Lichtsysteme Gmbh | Metal strip, in particular steel strip, for the production of shields for installation in low-pressure discharge lamps in particular |
WO1997019461A1 (en) * | 1995-11-23 | 1997-05-29 | Saes Getters S.P.A. | Process for producing a device for mercury dispensing, reactive gases sorption and electrode shielding within fluorescent lamps and device thus produced |
WO1997021239A1 (en) * | 1995-12-06 | 1997-06-12 | Saes Getters S.P.A. | Process for manufacturing shields of different size for fluorescent lamps and shields produced through such a process |
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 |
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 |
US6680571B1 (en) * | 1997-05-22 | 2004-01-20 | Saes Getters S.P.A. | Device for introducing small amounts of mercury into fluorescent lamps |
DE10047440B4 (en) * | 1999-09-21 | 2004-04-29 | Sli Lichtsysteme Gmbh | support material |
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 |
US20070216308A1 (en) * | 2006-03-16 | 2007-09-20 | Kiermaier Ludwig P | Lamp electrode and method for delivering mercury |
US20070216282A1 (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 (en) * | 2008-12-11 | 2010-06-12 | Getters Spa | MERCURY DISPENSER SYSTEM FOR FLUORESCENT LAMPS |
US20100259167A1 (en) * | 2007-12-21 | 2010-10-14 | Alessio Corazza | Mercury dispensing devices with a reduced particle loss |
CN101436510B (en) * | 2007-11-13 | 2010-12-15 | 喜星素材株式会社 | Getter composition and device for introducing of mercury into fluorescence lamp for BLU |
WO2011006811A1 (en) | 2009-07-15 | 2011-01-20 | Saes Getters S.P.A. | Support for filiform elements containing an active material |
WO2011104145A1 (en) | 2010-02-23 | 2011-09-01 | Saes Getters S.P.A. | A method and system for the controlled dispensing of mercury and devices manufactured through this method |
US8253331B2 (en) | 2010-04-28 | 2012-08-28 | General Electric Company | Mercury dosing method for fluorescent lamps |
WO2013179167A1 (en) | 2012-05-31 | 2013-12-05 | Saes Getters S.P.A. | Improved mercury dosing composition |
ITMI20131658A1 (en) * | 2013-10-08 | 2015-04-09 | Getters Spa | COMBINATION OF MATERIALS FOR MERCURY RELEASE DEVICES AND DEVICES CONTAINING THIS MATERIAL COMBINATION |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5115673B2 (en) * | 1971-09-23 | 1976-05-18 | ||
IT963874B (en) * | 1972-08-10 | 1974-01-21 | Getters Spa | IMPROVED GETTER DEVICE CONTAINING NON-EVAPORABLE MATERIAL |
GB2176335B (en) * | 1985-06-04 | 1989-12-06 | English Electric Valve Co Ltd | Discharge tubes |
IT1273338B (en) * | 1994-02-24 | 1997-07-08 | Getters Spa | COMBINATION OF MATERIALS FOR MERCURY DISPENSING DEVICES PREPARATION METHOD AND DEVICES SO OBTAINED |
US5898272A (en) * | 1997-08-21 | 1999-04-27 | Everbrite, Inc. | Cathode for gas discharge lamp |
ITMI20042516A1 (en) * | 2004-12-27 | 2005-03-27 | Getters Spa | PROCESS FOR MANUFACTURING BY DEPOSITION OF LOW-BONDING LEAGUE LOADING DEVICES AT LEAST ONE ACTIVE MATERIAL |
WO2009098860A1 (en) * | 2008-02-06 | 2009-08-13 | Panasonic Corporation | Mercury emitter, method for manufacturing low-pressure discharge lamp using the mercury emitter, low-pressure discharge lamp, lighting system, and liquid crystal display device |
ITMI20091255A1 (en) * | 2009-07-15 | 2011-01-16 | Getters Spa | SUPPORT FOR ELEMENTS FILIFORMS CONTAINING AN ACTIVE MATERIAL |
Citations (2)
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 |
-
1970
- 1970-10-07 US US78839A patent/US3657589A/en not_active Expired - Lifetime
- 1970-10-16 DE DE2050838A patent/DE2050838C3/en not_active Expired
- 1970-10-16 FR FR7037495A patent/FR2066110A5/fr not_active Expired
- 1970-10-19 GB GB4949670A patent/GB1333724A/en not_active Expired
- 1970-10-20 NL NLAANVRAGE7015347,A patent/NL172498C/en not_active IP Right Cessation
- 1970-10-20 JP JP9169470A patent/JPS495659B1/ja active Pending
-
1972
- 1972-01-18 US US00218684A patent/US3733194A/en not_active Expired - Lifetime
Patent Citations (2)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5084078A (en) * | 1973-11-28 | 1975-07-07 | ||
JPS5327112B2 (en) * | 1973-11-28 | 1978-08-05 | ||
JPS5084074A (en) * | 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 (en) * | 1985-12-19 | 1987-07-08 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Storage element for dosing and introducing liquid mercury into a discharge lamp |
US5831385A (en) * | 1994-07-07 | 1998-11-03 | Saes Getters S.P.A. | Mercury dispensing composition containing Cu-Si alloy promoter |
EP0691670A2 (en) | 1994-07-07 | 1996-01-10 | Saes Getters S.P.A. | A combination of materials for mercury-dispensing devices, method of preparation and devices thus obtained |
US5916479A (en) * | 1994-07-07 | 1999-06-29 | Saes Getters S.P.A. | Mercury dispensing device |
EP0691670A3 (en) * | 1994-07-07 | 1997-12-17 | Saes Getters S.P.A. | A combination of materials for mercury-dispensing devices, method of preparation and devices thus obtained |
US5830026A (en) * | 1994-07-07 | 1998-11-03 | Saes Getters S.P.A. | Mercury dispensing device |
EP0737995A2 (en) * | 1995-04-10 | 1996-10-16 | Saes Getters S.P.A. | A combination of materials for integrated getter and mercury-dispensing devices and devices thus obtained |
CN1086504C (en) * | 1995-04-10 | 2002-06-19 | 工程吸气公司 | Combination of materials for integrated getter and mercury-dispensing devices and devices thus obtained |
EP0737995A3 (en) * | 1995-04-10 | 1998-07-01 | Saes Getters S.P.A. | A combination of materials for integrated getter and mercury-dispensing devices and devices thus obtained |
WO1997000532A1 (en) * | 1995-06-16 | 1997-01-03 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Process for manufacturing a cap strip for discharge lamps and a cap strip for discharge lamps |
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 (en) * | 1995-08-02 | 1997-02-06 | Sli Lichtsysteme Gmbh | Metal strip, in particular steel strip, for the production of shields for installation in low-pressure discharge lamps in particular |
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 (en) * | 1995-11-23 | 1997-05-29 | Saes Getters S.P.A. | Process for producing a device for mercury dispensing, reactive gases sorption and electrode shielding within fluorescent lamps and device thus produced |
CN1109353C (en) * | 1995-11-23 | 2003-05-21 | 工程吸气公司 | Process for producing a device for mercury dispensing reactive gases sorption and electrode shielding within fluorescent lamps |
WO1997021239A1 (en) * | 1995-12-06 | 1997-06-12 | Saes Getters S.P.A. | Process for manufacturing shields of different size for fluorescent lamps and shields produced through such a process |
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 (en) * | 1999-09-21 | 2004-04-29 | Sli Lichtsysteme Gmbh | support material |
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 |
US20070235686A1 (en) * | 2004-07-23 | 2007-10-11 | Saes Getters S.P.A. | Mercury Dispensing Compositions and Manufacturing Process Thereof |
US20100112369A1 (en) * | 2004-07-23 | 2010-05-06 | Saes Getters S.P.A. | Mercury dispensing compositions and manufacturing process thereof |
EP1953800A1 (en) | 2004-07-23 | 2008-08-06 | Saes Getters S.P.A. | Mercury dispensing compositions |
CN100573804C (en) * | 2004-07-23 | 2009-12-23 | 工程吸气公司 | Mercury dispensing composition and preparation method thereof |
US7674428B2 (en) | 2004-07-23 | 2010-03-09 | Saes Getters S.P.A. | Mercury dispensing compositions and manufacturing process thereof |
US7662305B2 (en) * | 2005-01-17 | 2010-02-16 | Saes Getters S.P.A. | Mercury dispensing compositions and device using the same |
US20090032767A1 (en) * | 2005-01-17 | 2009-02-05 | Saes Getters S.P.A. | Mercury Dispensing Compositions and Device Using the Same |
US20070216282A1 (en) * | 2006-03-16 | 2007-09-20 | Kiermaier Ludwig P | Lamp electrode and method for delivering mercury |
US7288882B1 (en) | 2006-03-16 | 2007-10-30 | E.G.L. Company Inc. | 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 |
US20100001230A1 (en) * | 2006-07-11 | 2010-01-07 | Saes Getters S.P.A. | Mercury releasing method |
US8062585B2 (en) | 2006-07-11 | 2011-11-22 | Saes Getters S.P.A. | Mercury releasing method |
CN101436510B (en) * | 2007-11-13 | 2010-12-15 | 喜星素材株式会社 | Getter composition and device for introducing of mercury into fluorescence lamp for BLU |
US7982383B2 (en) | 2007-12-21 | 2011-07-19 | Saes Getters S.P.A. | Mercury dispensing devices with a reduced particle loss |
US20100259167A1 (en) * | 2007-12-21 | 2010-10-14 | Alessio Corazza | Mercury dispensing devices with a reduced particle loss |
US8076848B2 (en) | 2008-12-11 | 2011-12-13 | Saes Getters S.P.A. | Mercury dispensing system for fluorescent lamps |
US20110163658A1 (en) * | 2008-12-11 | 2011-07-07 | Saes Getters S.P.A. | Mercury dispensing system for fluorescent lamps |
WO2010066611A1 (en) * | 2008-12-11 | 2010-06-17 | Saes Getters S.P.A. | Mercury dispensing system for fluorescent lamps |
ITMI20082187A1 (en) * | 2008-12-11 | 2010-06-12 | Getters Spa | MERCURY DISPENSER SYSTEM FOR FLUORESCENT LAMPS |
US8427051B2 (en) | 2009-07-15 | 2013-04-23 | Saes Getters S.P.A. | Support for filiform elements containing an active material |
US20110204774A1 (en) * | 2009-07-15 | 2011-08-25 | Saes Getters S.P.A | Support for filiform elements containing an active material |
WO2011006811A1 (en) | 2009-07-15 | 2011-01-20 | Saes Getters S.P.A. | Support for filiform elements containing an active material |
US8453892B2 (en) | 2010-02-23 | 2013-06-04 | Saes Getters S.P.A. | Method and system for the controlled dispensing of mercury and devices manufactured through this method |
WO2011104145A1 (en) | 2010-02-23 | 2011-09-01 | Saes Getters S.P.A. | A method and system for the controlled dispensing of mercury and devices manufactured through this method |
US8253331B2 (en) | 2010-04-28 | 2012-08-28 | General Electric Company | Mercury dosing method for fluorescent lamps |
WO2013179167A1 (en) | 2012-05-31 | 2013-12-05 | Saes Getters S.P.A. | Improved mercury dosing composition |
US8816583B1 (en) | 2012-05-31 | 2014-08-26 | Saes Getters S.P.A. | Mercury dosing composition |
ITMI20131658A1 (en) * | 2013-10-08 | 2015-04-09 | Getters Spa | COMBINATION OF MATERIALS FOR MERCURY RELEASE DEVICES AND DEVICES CONTAINING THIS MATERIAL COMBINATION |
WO2015052604A1 (en) | 2013-10-08 | 2015-04-16 | Saes Getters S.P.A. | A combination of materials for mercury-dispensing devices and devices containing said combination of materials |
CN105517734A (en) * | 2013-10-08 | 2016-04-20 | 工程吸气公司 | Combination of materials for mercury-dispensing devices and devices containing combination of materials |
US9406476B2 (en) | 2013-10-08 | 2016-08-02 | Saes Getters S.P.A. | Combination of materials for mercury-dispensing devices and devices containing said combination of materials |
CN105517734B (en) * | 2013-10-08 | 2018-04-13 | 工程吸气公司 | Device for the material compositions of mercury distributor and containing the material compositions |
Also Published As
Publication number | Publication date |
---|---|
JPS495659B1 (en) | 1974-02-08 |
DE2050838A1 (en) | 1971-04-29 |
GB1333724A (en) | 1973-10-17 |
DE2050838C3 (en) | 1979-09-06 |
FR2066110A5 (en) | 1971-08-06 |
DE2050838B2 (en) | 1973-04-05 |
NL7015347A (en) | 1971-04-22 |
NL172498B (en) | 1983-04-05 |
US3733194A (en) | 1973-05-15 |
NL172498C (en) | 1983-09-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3657589A (en) | Mercury generation | |
US4306887A (en) | Getter device and process for using such | |
US6506319B1 (en) | Getter materials capable of being activated at low applied temperatures | |
JP3917514B2 (en) | Evaporative getter alloy | |
RU2388839C2 (en) | Non evaporating gas absorbing alloys for hydrogen trapping | |
JP2655123B2 (en) | Combination of substances for a mercury dispersion apparatus, production method and apparatus obtained in this way | |
US5830026A (en) | Mercury dispensing device | |
US3722976A (en) | Mercury generation | |
JP2858646B2 (en) | Mercury donor or mercury donor and method for introducing mercury into electron tube | |
US4195891A (en) | Alkali metal vapor generator | |
US4744946A (en) | Materials for storage of hydrogen | |
Giorgi | Getters and gettering | |
US3525009A (en) | Low pressure mercury vapour discharge lamp including an alloy type getter coating | |
US3549937A (en) | Low pressure mercury vapour discharge lamp including an alloy type getter coating | |
JPS5832732B2 (en) | getter device | |
US4107565A (en) | Mercury emitting structure | |
US3544829A (en) | Low pressure mercury vapour discharge lamp | |
GB2056490A (en) | Mercury releasing composition of matter, mercury releasing device and electron tubes made therewith | |
JPS6127048A (en) | Low methane getter unit | |
US3973816A (en) | Method of gettering a television display tube | |
WO2003029502A2 (en) | Getter alloys for the sorption of hydrogen at high temperatures | |
US4249940A (en) | Mischmetal-nickel-iron hydrogen storage compound | |
US7083825B2 (en) | Composition used in producing calcium-rich getter thin film | |
JPH089748B2 (en) | Gas absorption alloy with excellent activation characteristics | |
JPH02118045A (en) | Nonevaporative getter alloy |