CN104465305A - Metal halide lamp electrode and ceramic metal halide lamp - Google Patents
Metal halide lamp electrode and ceramic metal halide lamp Download PDFInfo
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- CN104465305A CN104465305A CN201310442934.6A CN201310442934A CN104465305A CN 104465305 A CN104465305 A CN 104465305A CN 201310442934 A CN201310442934 A CN 201310442934A CN 104465305 A CN104465305 A CN 104465305A
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- halogen lamp
- tungsten
- ball
- lamp pole
- ceramic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/073—Main electrodes for high-pressure discharge lamps
- H01J61/0735—Main electrodes for high-pressure discharge lamps characterised by the material of the electrode
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
- H01J61/827—Metal halide arc lamps
Abstract
The invention discloses a metal halide lamp electrode and a ceramic metal halide lamp. The metal halide lamp electrode comprises a tungsten electrode stem and a molybdenum plate. One end of the tungsten electrode stem is coaxially and electrically connected with the molybdenum plate, and the outer surface of the other end of the tungsten electrode stem is wound by a tungsten filament spiral. A plurality of spherical or similar-spherical emitting balls are clamped between every two adjacent spiral tungsten filaments of the tungsten filament spiral. Each emitting ball comprises, by weight, 0.05% to 0.5% of hafnium oxide, 0.5% to 3% of lanthanum oxide, 0.05% to 10% of ytterbium oxide and the balance tungsten. According to the metal halide lamp electrode, the electron work function is low, the working temperature of the electrode is effectively lowered, tungsten metal evaporation and growth are effectively restrained, the stability of a tungsten metal particle structure is ensured, the service life is long, and the light emitting efficiency is high. The metal halide lamp electrode is used as the positive and negative electrodes of the ceramic metal halide lamp, so that the ceramic metal halide lamp is environmentally friendly, safe, high in lighting effect and long in service life.
Description
Technical field
The invention belongs to illumination light electro-technical field, relate to a kind of metal halogen lamp pole and ceramic gold-halogen lamp specifically.
Background technology
Ceramic gold-halogen lamp technical development is in recent years increasingly mature, and performance parameter significantly promotes and the quartz metal halide lamp of beyond tradition far away in every respect, and it uses and starts Rapid Popularization.Even so, but the performance of ceramic gold-halogen lamp waits perfect.
Electrode is as the vitals of ceramic gold-halogen lamp, and its structure directly affects the performance of Metal halogen lamp.Wherein, the current common electrode structure for mid power ceramic gold-halogen lamp as shown in Figure 1, it mainly comprises molybdenum sheet (molybdenum foil) 02, described molybdenum sheet 02 has relative two ends, its one end is coaxially connected with electrode bar 01 (main component is tungsten and thorium anhydride alloy), the other end is molybdenum with the lead-out wire 04(main component be electrically connected), be also electrically connected with tungsten filament helix 03 at another end relative in coaxial electrical link with molybdenum sheet 02 of electrode bar 01.Wherein, electrode bar 01, as the origin or beginning of electrical discharge arc or end, has at high temperature halide-resistant chemical corrosion; Thorium anhydride in electrode bar 01, as emissive material, can reduce the work function of tungsten metal.This will be conducive to electrode bar 01 and work at a lower temperature, effectively suppress the evaporation of tungsten and the deposition in arctube walls, thus the normal work of guarantee fund's halogen lamp.Although thorium anhydride can improve the light efficiency of Metal halogen lamp as emissive material, but thorium is radioelement, in decay process, thorium is except release α, β particle, also gamma-rays can be discharged, therefore, there is radioactive contamination in production with in using in the existing Metal halogen lamp using thorium anhydride as emissive material.In addition, the electrode bar adopting thorium anhydride and tungsten alloy to be formed makes the light efficiency of ceramic gold-halogen lamp increase, but very not desirable in actual use, need further raising.
Summary of the invention
The object of the invention is to the above-mentioned deficiency overcoming prior art, a kind of ceramic gold-halogen lamp without thorium metal halogen lamp pole and middle power is provided, be intended to solve existing ceramic gold-halogen lamp using thorium anhydride cause as emissive material in the technical problem producing and exist in using radioactive contamination and light efficiency relative mistake.
In order to realize foregoing invention object, technical scheme of the present invention is as follows:
A kind of metal halogen lamp pole, comprise tungsten electrode bar and molybdenum sheet, one end of described tungsten electrode bar is connected with described molybdenum sheet coaxial electrical, and the other end outer surface is wound with tungsten filament helix, is folded with the spherical or spheroidal some transmitting balls of class between the adjoining spiral tungsten filament of described tungsten filament helix; Wherein, described transmitting ball is made up of following weight percent composition:
Hafnium oxide 0.05% ~ 0.5%;
Lanthana 0.5% ~ 3%;
Ytterbium oxide 0.05% ~ 10%;
Surplus is tungsten.
And, a kind of ceramic gold-halogen lamp, comprise metal halogen lamp pole, ceramic sleeve and the ceramic discharge chamber be communicated with described ceramic sleeve and the Illuminant pill be arranged in described discharge cavity, the metal halogen lamp pole that described metal halogen lamp pole is above-mentioned, and the surface wrap of described metal halogen lamp pole has tungsten electrode bar one end of tungsten filament helix and tungsten filament helix to stretch in described ceramic discharge chamber, the other end of tungsten electrode bar and molybdenum sheet are sealed in described ceramic sleeve.
Metal halogen lamp pole of the present invention without the transmitting ball of thorium element, makes this metal halogen lamp pole radiationless by sandwiched in the tungsten filament helix being wound in tungsten electrode bar one end, and it is safety and environmental protection in production and use; In addition, this transmitting ball is by the synergy of lanthana, hafnium oxide, ytterbium oxide and tungsten metal, make the electron work functon of this metal halogen lamp pole low, effectively reduce the working temperature of electrode and suppress evaporation and the growth of tungsten metal, ensure the stable of tungsten metal grain structure, long service life, and luminous efficiency is high.
Above-mentioned ceramic gold-halogen lamp is owing to adopting above-mentioned metal halogen lamp pole as electrode, and therefore, this ceramic gold-halogen lamp Environmental Safety, light efficiency is high, long service life.
Accompanying drawing explanation
Fig. 1 is existing metal halogen lamp pole structural representation;
Fig. 2 is that the embodiment of the present invention is without thorium metal halogen lamp pole structural representation;
Fig. 3 is that the embodiment of the present invention is without launching bead preparation method schematic flow sheet in thorium metal halogen lamp pole;
Fig. 4 is embodiment of the present invention ceramic gold-halogen lamp structural representation.
Embodiment
In order to make the technical problem to be solved in the present invention, technical scheme and beneficial effect clearly understand, below in conjunction with embodiment and accompanying drawing, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiments provide a kind of radiationless, Environmental Safety and light efficiency high without thorium metal halogen lamp pole 1, its structure is as shown in Figure 2.This metal halogen lamp pole 1 comprises tungsten electrode bar 11 and molybdenum sheet 12, one end of this tungsten electrode bar 11 is that coaxial electrical is connected with molybdenum sheet 12 one end, the other end outer surface is wound with tungsten filament helix 13, between the adjoining spiral tungsten filament 131 of tungsten filament helix 13, be folded with the spherical or spheroidal some transmitting balls 15 of class, be also electrically connected with lead-out wire 14 in the other end relative in coaxial electrical link with tungsten electrode bar 11 of molybdenum sheet 12.
Particularly, as shown in Figure 2 without in thorium metal halogen lamp pole 1, one end and molybdenum sheet 12 one end of tungsten electrode bar 11 are that coaxial electrical is connected lead-out wire 14 can be adopted to be electrically connected.Adopt molybdenum sheet 12 when being coaxially connected with tungsten electrode bar 11, this molybdenum sheet 12 effectively can realize the outstanding air-tightness of electric arc tube end, so that the carrying out smoothly of high-pressure discharge.Certainly, also directly coaxial welding can be carried out in one end of tungsten electrode bar 11 and molybdenum sheet 12 one end, when adopting direct welding method to connect, in order to make firm welding between tungsten electrode bar 11 and molybdenum sheet 12, can also add at the weld of one end of tungsten electrode bar 11 and molybdenum sheet 12 one end with transition molybdenum sheet (showing without figure).Lead-out wire 14 is also electrically connected with in the other end relative in coaxial electrical link with tungsten electrode bar 11 of molybdenum sheet 12.Wherein, the material main component of the lead-out wire 14 at this two place is molybdenum.
Be wrapped in the not special requirement of length of the tungsten filament helix 13 of the other end outer surface relative with molybdenum sheet 12 electric connecting terminal of tungsten electrode bar 11, can according to the Design of length of this area tungsten filament helix routine.Due in the above-described embodiments, be folded with and launch ball 15 between adjacent two helical tungsten filaments 131, therefore, the tungsten filament diameter of this tungsten filament helix 13 should meet can sandwiched be lived to launch ball 15.Wherein, launch ball 15 to be made up of following weight percent composition:
Hafnium oxide 0.05% ~ 0.5%;
Lanthana 0.5% ~ 3%;
Ytterbium oxide 0.05% ~ 10%;
Surplus is tungsten.
This transmitting ball 15 is by the synergy of lanthana, hafnium oxide, ytterbium oxide and tungsten metal, make the electron work functon of this metal halogen lamp pole 1 low, effectively reduce the working temperature of this metal halogen lamp pole 1 and suppress evaporation and the growth of tungsten metal, ensure the stable of tungsten metal grain structure, long service life, and luminous efficiency is high.Particularly, form the work function that the lanthana launching ball 15 effectively can reduce tungsten metal, thus reduce the electron work functon of this metal halogen lamp pole 1, thus effectively reduce the working temperature of this metal halogen lamp pole 1 and suppress the evaporation of tungsten metal; Hafnium oxide can generate stable mixture with lanthana, effective suppression lanthana volatilizees at work, like this when this metal halogen lamp pole 1 works, lanthana is along tungsten particle surface, obtain prolongation from launching ball 15 diffusion inside to the time of launching ball 15 surface, thus improve the life-span of Metal halogen lamp; The growth that effectively can suppress tungsten metallic particles of ytterbium oxide, and grain structure is controlled, and particle size is less, maintains the stable of tungsten metal grain structure.
In a particular embodiment, in above-mentioned transmitting ball 15, the weight percent of hafnium oxide contains can be 0.05%, 0.1%, 0.15%, 0.2%, 0.25%, 0.30%, 0.35%, 0.40%, 0.45%, 0.50%; It can be 0.5%, 0.8%, 1%, 1.5%, 2%, 2.5%, 3% that the weight percent of lanthana contains; It can be 0.05%, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 6%, 6.5%, 7%, 8%, 9%, 10 % that the weight percent of ytterbium oxide contains.
Its effect is better played in order to make to launch ball 15, make the electron work functon of this metal halogen lamp pole 1 lower, make Metal halogen lamp light efficiency higher, as the preferred embodiments of the present invention, launching ball 15 is between the adjoining spiral tungsten filament 131 being folded in tungsten filament helix 13 at interval, and between same adjoining spiral tungsten filament 131, the spacing of the transmitting ball 15 adjacent between two of sandwiched is 0.05mm ~ 0.1mm.In a particular embodiment, the spacing of adjacent between two transmitting ball 15 can be that 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.10mm are equidistant.
As another preferred embodiment of the present invention, the diameter of the transmitting ball 15 in the various embodiments described above is 0.1mm ~ 0.3mm.In a particular embodiment, the diameter of this transmitting ball 15 can be 0.1mm, 0.15mm, 0.20mm, 0.25mm, 0.3mm equidimension, is more preferably 0.20mm.
As another preferred embodiment of the present invention, the transmitting ball 15 in the various embodiments described above is prepared according to process as shown in Figure 3, and it comprises the steps:
S01. by ball-milling treatment, the mixed material of hafnium oxide, lanthana, ytterbium oxide, tungsten powder is prepared: in vacuum or inert gas atmosphere, carry out ball-milling treatment after hafnium oxide, lanthana, ytterbium oxide, tungsten powder being mixed in proportion, obtain mixed material;
S02. sintering preparation ball 15 will be launched after mixed material mold pressing: the mixed material mold pressing prepared by step S01 is made spherical or similar spheric granules and to be placed in reducing atmosphere sintering processes at 1460 DEG C ~ 1480 DEG C, and continues to cool in reducing atmosphere.
Particularly, the hafnium oxide in above-mentioned steps S01, lanthana, ytterbium oxide, tungsten powder mixed proportion as described above, in four total weight amounts for 100%, this hafnium oxide is 0.05% ~ 0.5%, lanthana is 0.5% ~ 3%, and ytterbium oxide is 0.05% ~ 10%, and surplus is tungsten.In a particular embodiment, the weight percent of hafnium oxide contains can be 0.05%, 0.1%, 0.15%, 0.2%, 0.25%, 0.30%, 0.35%, 0.40%, 0.45%, 0.50%; It can be 0.5%, 0.8%, 1%, 1.5%, 2%, 2.5%, 3% that the weight percent of lanthana contains; It can be 0.05%, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 6%, 6.5%, 7%, 8%, 9%, 10% that the weight percent of ytterbium oxide contains.
In this step S01, mix more even in ball milling to make each component of hafnium oxide, lanthana, ytterbium oxide, tungsten powder, and grinding efficiency is provided, in a preferred embodiment, this selects particle size to be hafnium oxide, lanthana, ytterbium oxide, the tungsten powder of 2 μm ~ 5 μm is raw material.
In further preferred embodiment, in step S01, the process conditions of ball-milling treatment are: with tungsten ball for ball-milling medium, and rotational speed of ball-mill is 180r/min ~ 250r/min, and ratio of grinding media to material is (8 ~ 15): 1, ball packing factor is 5% ~ 9%, and Ball-milling Time is 30h ~ 60h.The process conditions of the ball-milling treatment in the preferred embodiment can make Four composition mix after ball milling more evenly, and grinding efficiency is high.
In a particular embodiment, the process conditions of this ball-milling treatment are: with tungsten ball for ball-milling medium, and rotational speed of ball-mill is 200r/min, and ratio of grinding media to material is 10: 1, and ball packing factor is 6%, and Ball-milling Time is 40h.
In this step S01, when ball-milling treatment is carried out in inert gas, this inert gas can select Ar, if certain conditions permit, can also select other inert gases.
In above-mentioned steps S02, the mold pressing parameter of the mixture that hafnium oxide, lanthana, ytterbium oxide, tungsten powder are formed after ball milling is preferably: 500Mpa ~ 2700Mpa, the time is 5min ~ 30min, is more preferably 2000Mpa, and the time is 10min.Under preferred mold pressing parameter, the mixture bead obtained after mold pressing is closely knit, loose phenomenon is not easily there is in it in sintering, therefore, the transmitting ball 15 obtained after this preferred mold pressing parameter process and calcining is closely knit, spherical or the spheroidal stabilized structure of class class, and its emitting performance is more excellent, thus metal halogen lamp pole 1 is extended useful life.
In this step S02, at the temperature of 1460 DEG C ~ 1480 DEG C during sintering processes, the temperature of sintering is preferably 20min ~ 50min, is more preferably 30min.This preferred sintering temperature and time can make hafnium oxide, lanthana, ytterbium oxide, tungsten powder mixture fully sinter, and final transmitting ball 15 stuctures and properties is stablized, closely knit.
As preferred embodiment, the reducing atmosphere of sintering processes is hydrogen reducing atmosphere, this hydrogen reducing atmosphere can ensure that the tungsten powder in mixture is not oxidized, the density of launching ball 15 finished product can also be improved simultaneously, reduce porosity, thus improve further the performance of launching ball 15, extend metal halogen lamp pole 1 useful life.
After above-described embodiment sintering processes, the ball of this transmitting ball 15 is heavily 0.1mg ~ 0.5mg.
Therefore, the metal halogen lamp pole 1 in above-described embodiment adopts lanthana, hafnium oxide, ytterbium oxide and tungsten metal as emissive material, substitutes existing electrode and adopts thorium anhydride, makes metal halogen lamp pole 1 without x radiation x in production and use, safety and environmental protection.By lanthana, hafnium oxide, ytterbium oxide and tungsten metal radiate material are made coccoid, and between the adjoining spiral tungsten filament 131 transmitting ball 15 in bead and Fig. 2 being folded in tungsten filament helix 13, preferred transmitting ball 15 be interval be folded between adjoining spiral tungsten filament 131, by launching the lanthana in ball 15, hafnium oxide, the synergy of ytterbium oxide and tungsten metal and the setting of transmitting ball 15 position, make the electron work functon of this metal halogen lamp pole 1 low, effectively reduce the working temperature of electrode 1 and suppress evaporation and the growth of tungsten metal, ensure the stable of tungsten metal grain structure, long service life, and light efficiency is high.
Correspondingly, the embodiment of the present invention additionally provides the high and ceramic gold-halogen lamp of the middle power of long service life of a kind of safety and environmental protection, light efficiency, its structure as shown in Figure 4, comprise metal halogen lamp pole 1 as described above, ceramic sleeve 2 and the ceramic discharge chamber 3 be communicated with ceramic sleeve 2 and be arranged at the Illuminant pill 4 of in discharge cavity 3, wherein, the surface wrap of metal halogen lamp pole 1 has tungsten electrode bar 11 one end of tungsten filament helix 13 and tungsten filament helix 13 to stretch in described ceramic discharge chamber 3, and the other end of tungsten electrode bar 11 and molybdenum sheet 12 are sealed in described ceramic sleeve 2.In this ceramic gold-halogen lamp, Illuminant pill 4 can adopt directly selects existing Illuminant pill, the other end of tungsten electrode bar 11 and molybdenum sheet 12 are sealed in the method for described ceramic sleeve 2 and seal the method for packing that material all can adopt existing ceramic gold-halogen lamp, due to the existence of molybdenum sheet 12, make ceramic sleeve 2 after hermetically sealed, have outstanding air-tightness, ensure that carrying out smoothly of high-pressure discharge.Pottery sleeve 2 is after encapsulation, and the lead-out wire 14 be electrically connected with molybdenum sheet 12 1 end stretches out outside ceramic sleeve 2, to be connected with power supply.
In a preferred embodiment, the Illuminant pill 4 be arranged in ceramic discharge chamber 3 is made up of sodium iodide, thallium iodide, indium iodide, and the mol ratio of sodium iodide, thallium iodide, indium iodide is (0.005 ~ 0.015): (6.0 × 10
-4~ 7.0 × 10
-4): (4.0 × 10
-5~ 4.7 × 10
-5).This optimum ratio can make the Illuminant pill 4 formed have good light efficiency, color rendering index and colour temperature.
Particularly, this Illuminant pill 4 preparation method is preferably as follows:
By above-mentioned sodium iodide, thallium iodide, after indium iodide light emitting composition mixes and forms mixture, be placed in the quartz container with nozzle, forevacuum process 40min ~ 60min is carried out at being preferably 130 DEG C at 110 DEG C ~ 150 DEG C, be preferably 50min clock, then mixture melting is slowly heated to, as after stirring 30min after stir process, the mixture of melting is sprayed from nozzle, liquid pearl rapid cooling curing balling-up in high-purity inert gas is as argon gas mass transport process of melting, finally by products therefrom under molecular pump high vacuum system, the further removing trace be adsorbed on ball surface is mixed gas, at H
2o and O
2content sieves lower than in the glove box of 1ppm.Product was through both having can be used for the production of ceramic gold-halogen lamp after the assay was approved.Wherein, the heating rate being slowly heated to mixture melting is 1 DEG C/min ~ 3 DEG C/min.
In further preferred embodiment, in above-mentioned ceramic gold-halogen lamp embodiment, this Illuminant pill 4 diameter is 0.3mm ~ 0.8mm, is preferably 0.5mm; Grain is heavily 0.3mg ~ 1.1mg, is preferably 0.5mg.This preferred size and the heavy Illuminant pill 4 of grain more can be injected in ceramic discharge chamber 3 by note ball device easily and fast, accurately.
If the power containing the ceramic gold-halogen lamp without thorium metal halogen lamp pole 1 shown in Fig. 2 is preferably 150W ~ 400W.
Therefore, above-mentioned ceramic gold-halogen lamp is owing to adopting above-mentioned metal halogen lamp pole 1 as electrode, and therefore, this ceramic gold-halogen lamp Environmental Safety, light efficiency is high, long service life.Further, by the allotment to Illuminant pill 4 composition and content, ceramic gold-halogen lamp is made to have excellent light efficiency and colour temperature.
Now in conjunction with instantiation, the stuctures and properties of embodiment of the present invention metal halogen lamp pole and ceramic gold-halogen lamp is described in further detail.
Embodiment 1
A kind of metal halogen lamp pole and ceramic gold-halogen lamp, the structure of metal halogen lamp pole is as described above with shown in accompanying drawing 2, and the structure of ceramic gold-halogen lamp is as described above with shown in accompanying drawing 3.Wherein, the component of the transmitting ball 15 in this metal halogen lamp pole 1: 0.05wt% hafnium oxide, 1% lanthana, 6% ytterbium oxide, all the other are tungsten, its average diameter is 0.1mm, its interval is folded between the adjoining spiral tungsten filament 131 of tungsten filament helix 13, and the average headway of the transmitting ball 15 adjacent between two of sandwiched is 0.05mm between same adjoining spiral tungsten filament 131.
The preparation method of this transmitting ball 15 is as follows:
By average particle diameter size scope 3um hafnium oxide, lanthana, ytterbium oxide and tungsten metal particle powder, according to 0.05wt% hafnium oxide, 1wt% lanthana, the ytterbium oxide of 6wt%, all the other ratios being tungsten put into high energy ball mill, add tungsten ball ball-milling medium, adopt Ar as protective atmosphere, high-energy ball milling is carried out to powder, ball-milling technology is: rotational speed of ball-mill is 200r/min, ratio of grinding media to material is 10: 1, ball packing factor is 6%, Ball-milling Time is 40h, then stamping of powder is shaped, be pressed into 0.1mm spherical particle, then hydrogen be in protective atmosphere in 1470 ± 10 DEG C sintering 30min, and be that protective atmosphere cooling obtains this transmitting ball 15 at hydrogen.
The mol ratio that this ceramic gold-halogen lamp is arranged at sodium iodide, thallium iodide and indium iodide in the Illuminant pill 4 in discharge cavity 3 is 0.01:6.6 × 10
-4: 4.4 × 10
-5.Its preparation method is as follows:
Be 0.01:6.6 × 10 by mol ratio
-4: 4.4 × 10
-5sodium iodide, thallium iodide and indium iodide mix and form mixture after, be placed in the quartz container with nozzle, forevacuum process 50 minutes is carried out at 130 DEG C, then be slowly heated to mixture melting, stir 30 minutes, the mixture of melting is sprayed from nozzle, liquid pearl rapid cooling curing balling-up in high-purity argon gas mass transport process of melting, then by products therefrom under molecular pump high vacuum system, further the removing trace be adsorbed on ball surface is mixed gas, at H
2o and O
2content sieves lower than in the glove box of 1ppm, inspection.Illuminant pill 4 diameter prepared is 0.5mm, and grain is heavily 0.5mg.
In addition, the power setting of this ceramic gold-halogen lamp is 400w.
Embodiment 2
A kind of metal halogen lamp pole and ceramic gold-halogen lamp, the structure of metal halogen lamp pole is as described above with shown in accompanying drawing 2, and the structure of ceramic gold-halogen lamp is as described above with shown in accompanying drawing 3.Wherein, the component of the transmitting ball 15 in this metal halogen lamp pole 1: the ytterbium oxide of 0.1wt% hafnium oxide, 1wt% lanthana, 6wt%, all the other are tungsten, its average diameter is 0.2mm, its interval is folded between the adjoining spiral tungsten filament 131 of tungsten filament helix 13, and the average headway of the transmitting ball 15 adjacent between two of sandwiched is 0.07mm between same adjoining spiral tungsten filament 131.
The preparation method of this transmitting ball 15 launches ball 15 preparation method with reference in embodiment 1; wherein; ball-milling technology is: rotational speed of ball-mill is 180r/min; ratio of grinding media to material is 8: 1; ball packing factor is 5%, and Ball-milling Time is 40h, is then shaped by stamping of powder; be pressed into 0.2mm spherical particle, then hydrogen be in protective atmosphere in 1470 ± 10 DEG C sintering 20min.
This ceramic gold-halogen lamp is arranged at Illuminant pill 4 in discharge cavity 3 as Illuminant pill in embodiment 1.
In addition, the power setting of this ceramic gold-halogen lamp is 400w.
Embodiment 3
A kind of metal halogen lamp pole and ceramic gold-halogen lamp, the structure of metal halogen lamp pole is as described above with shown in accompanying drawing 2, and the structure of ceramic gold-halogen lamp is as described above with shown in accompanying drawing 3.Wherein, the component of the transmitting ball 15 in this metal halogen lamp pole 1: the ytterbium oxide of 0.3wt% hafnium oxide, 1wt% lanthana, 6wt%, all the other are tungsten, its average diameter is 0.3mm, its interval is folded between the adjoining spiral tungsten filament 131 of tungsten filament helix 13, and the average headway of the transmitting ball 15 adjacent between two of sandwiched is 0.1mm between same adjoining spiral tungsten filament 131.
The preparation method of this transmitting ball 15 launches ball 15 preparation method with reference in embodiment 1; wherein; ball-milling technology is: rotational speed of ball-mill is 250r/min; ratio of grinding media to material is 15: 1; ball packing factor is 9%, and Ball-milling Time is 60h, is then shaped by stamping of powder; be pressed into 0.3mm spherical particle, then hydrogen be in protective atmosphere in 1470 ± 10 DEG C sintering 30min.
This ceramic gold-halogen lamp is arranged at Illuminant pill 4 in discharge cavity 3 as Illuminant pill in embodiment 1.
In addition, the power setting of this ceramic gold-halogen lamp is 400w.
Embodiment 4
A kind of metal halogen lamp pole and ceramic gold-halogen lamp, the structure of metal halogen lamp pole is as described above with shown in accompanying drawing 2, and the structure of ceramic gold-halogen lamp is as described above with shown in accompanying drawing 3.Wherein, the component of the transmitting ball 15 in this metal halogen lamp pole 1: the ytterbium oxide of 0.5wt% hafnium oxide, 1wt% lanthana, 6wt%, all the other are tungsten, its average diameter is 0.2mm, its interval is folded between the adjoining spiral tungsten filament 131 of tungsten filament helix 13, and the average headway of the transmitting ball 15 adjacent between two of sandwiched is 0.07mm between same adjoining spiral tungsten filament 131.
The preparation method of this transmitting ball 15 launches ball 15 preparation method with reference in embodiment 1; wherein; ball-milling technology is: rotational speed of ball-mill is 180r/min; ratio of grinding media to material is 8: 1; ball packing factor is 5%, and Ball-milling Time is 40h, is then shaped by stamping of powder; be pressed into 0.2mm spherical particle, then hydrogen be in protective atmosphere in 1470 ± 10 DEG C sintering 20min.
This ceramic gold-halogen lamp is arranged at Illuminant pill 4 in discharge cavity 3 as Illuminant pill in embodiment 1.
In addition, the power setting of this ceramic gold-halogen lamp is 400w.
Embodiment 5
A kind of metal halogen lamp pole and ceramic gold-halogen lamp, the structure of metal halogen lamp pole is as described above with shown in accompanying drawing 2, and the structure of ceramic gold-halogen lamp is as described above with shown in accompanying drawing 3.Wherein, the component of the transmitting ball 15 in this metal halogen lamp pole 1: 0.1wt% hafnium oxide, 0.5wt% lanthana, the ytterbium oxide of 6wt%, all the other are tungsten, its average diameter is 0.2mm, and its interval is folded between the adjoining spiral tungsten filament 131 of tungsten filament helix 13, and the average headway of the transmitting ball 15 adjacent between two of sandwiched is 0.07mm between same adjoining spiral tungsten filament 131.
The preparation method of this transmitting ball 15 launches ball 15 preparation method with reference in embodiment 1; wherein; ball-milling technology is: rotational speed of ball-mill is 200r/min; ratio of grinding media to material is 9: 1; ball packing factor is 7%, and Ball-milling Time is 50h, is then shaped by stamping of powder; be pressed into 0.2mm spherical particle, then hydrogen be in protective atmosphere in 1470 ± 10 DEG C sintering 50min.
This ceramic gold-halogen lamp is arranged at Illuminant pill 4 in discharge cavity 3 as Illuminant pill in embodiment 1.
In addition, the power setting of this ceramic gold-halogen lamp is 400w.
Embodiment 6
A kind of metal halogen lamp pole and ceramic gold-halogen lamp, the structure of metal halogen lamp pole is as described above with shown in accompanying drawing 2, and the structure of ceramic gold-halogen lamp is as described above with shown in accompanying drawing 3.Wherein, the component of the transmitting ball 15 in this metal halogen lamp pole 1: 0.1wt% hafnium oxide, 3wt% lanthana, the ytterbium oxide of 6wt%, all the other are tungsten, its average diameter is 0.2mm, and its interval is folded between the adjoining spiral tungsten filament 131 of tungsten filament helix 13, and the average headway of the transmitting ball 15 adjacent between two of sandwiched is 0.07mm between same adjoining spiral tungsten filament 131.
The preparation method of this transmitting ball 15 launches ball 15 preparation method with reference in embodiment 1; wherein; ball-milling technology is: rotational speed of ball-mill is 180r/min; ratio of grinding media to material is 8: 1; ball packing factor is 5%, and Ball-milling Time is 40h, is then shaped by stamping of powder; be pressed into 0.2mm spherical particle, then hydrogen be in protective atmosphere in 1470 ± 10 DEG C sintering 20min.
This ceramic gold-halogen lamp is arranged at Illuminant pill 4 in discharge cavity 3 as Illuminant pill in embodiment 1.
In addition, the power setting of this ceramic gold-halogen lamp is 400w.
Embodiment 7
A kind of metal halogen lamp pole and ceramic gold-halogen lamp, the structure of metal halogen lamp pole is as described above with shown in accompanying drawing 2, and the structure of ceramic gold-halogen lamp is as described above with shown in accompanying drawing 3.Wherein, the component of the transmitting ball 15 in this metal halogen lamp pole 1: 0.1wt% hafnium oxide, 1wt% lanthana, the ytterbium oxide of 0.05wt%, all the other are tungsten, its average diameter is 0.2mm, and its interval is folded between the adjoining spiral tungsten filament 131 of tungsten filament helix 13, and the average headway of the transmitting ball 15 adjacent between two of sandwiched is 0.07mm between same adjoining spiral tungsten filament 131.
The preparation method of this transmitting ball 15 launches ball 15 preparation method with reference in embodiment 1; wherein; ball-milling technology is: rotational speed of ball-mill is 180r/min; ratio of grinding media to material is 8: 1; ball packing factor is 5%, and Ball-milling Time is 40h, is then shaped by stamping of powder; be pressed into 0.2mm spherical particle, then hydrogen be in protective atmosphere in 1470 ± 10 DEG C sintering 20min.
This ceramic gold-halogen lamp is arranged at Illuminant pill 4 in discharge cavity 3 as Illuminant pill in embodiment 1.
In addition, the power setting of this ceramic gold-halogen lamp is 400w.
Embodiment 8
A kind of metal halogen lamp pole and ceramic gold-halogen lamp, the structure of metal halogen lamp pole is as described above with shown in accompanying drawing 2, and the structure of ceramic gold-halogen lamp is as described above with shown in accompanying drawing 3.Wherein, the component of the transmitting ball 15 in this metal halogen lamp pole 1: 0.1wt% hafnium oxide, 1% lanthana, 10% ytterbium oxide, all the other are tungsten, its average diameter is 0.2mm, its interval is folded between the adjoining spiral tungsten filament 131 of tungsten filament helix 13, and the average headway of the transmitting ball 15 adjacent between two of sandwiched is 0.07mm between same adjoining spiral tungsten filament 131.
The preparation method of this transmitting ball 15 launches ball 15 preparation method with reference in embodiment 1; wherein; ball-milling technology is: rotational speed of ball-mill is 180r/min; ratio of grinding media to material is 8: 1; ball packing factor is 5%, and Ball-milling Time is 40h, is then shaped by stamping of powder; be pressed into 0.2mm spherical particle, then hydrogen be in protective atmosphere in 1460 ~ 1480 DEG C sintering 20min.
This ceramic gold-halogen lamp is arranged at Illuminant pill 4 in discharge cavity 3 as Illuminant pill in embodiment 1.
In addition, the power setting of this ceramic gold-halogen lamp is 400w.
Embodiment 9
A kind of metal halogen lamp pole and ceramic gold-halogen lamp, wherein, the structure of this metal halogen lamp pole and launch ball the even embodiment 2 of component in metal halogen lamp pole.
The mol ratio that this ceramic gold-halogen lamp is arranged at sodium iodide, thallium iodide and indium iodide in the Illuminant pill 4 in discharge cavity 3 is 0.01:6.0 × 10
-4: 4.0 × 10
-5.Its preparation method is with reference to the preparation method of Illuminant pill 4 in embodiment 1.Illuminant pill 4 diameter prepared is 0.3mm, and grain is heavily 0.3mg.
In addition, the power setting of this ceramic gold-halogen lamp is 150w.
Embodiment 10
A kind of metal halogen lamp pole and ceramic gold-halogen lamp, wherein, the structure of this metal halogen lamp pole and launch ball the even embodiment 2 of component in metal halogen lamp pole.
The mol ratio that this ceramic gold-halogen lamp is arranged at sodium iodide, thallium iodide and indium iodide in the Illuminant pill 4 in discharge cavity 3 is 0.01:7.0 × 10
-4: 4.7 × 10
-5.Its preparation method is with reference to the preparation method of Illuminant pill 4 in embodiment 1.Illuminant pill 4 diameter prepared is 0.8mm, and grain is heavily 1.1mg.
In addition, the power setting of this ceramic gold-halogen lamp is 150w.
Comparative example 1
A kind of 400w ceramic gold-halogen lamp, its electrode existing structure as shown in Figure 1 and adopt thorium anhydride to be emissive material, is arranged at Illuminant pill in discharge cavity as the Illuminant pill in embodiment 1.
Ceramic gold-halogen lamp correlated performance is tested
Electric light source quick photochromic test macro is adopted to test performances such as the luminous efficiency of the 400w ceramic gold-halogen lamp that above-described embodiment 1 to embodiment 10 and comparison example 1 the provide ratio of power (luminous flux with), color rendering index and relative colour temperatures.Wherein, the quick photochromic test macro of electric light source is provided by optical laboratory of Fudan University.
Concrete test condition: before each test, be the standard sources of 2856K by colour temperature, first luminous flux calibration and spectral calibration carried out to system.Before starting testing light source, first burning-point ceramic gold-halogen lamp more than 20 minutes in ball, makes light stability burning-point.
After Metal halogen lamp to be measured normally works 200h, use the quick photochromic test macro of electric light source to test, each group ceramic gold-halogen lamp sample size is 12, and wherein vertically lighting is 6, and horizontal lighting is 6.Light source gets the mean value of these effective lamp parameters in each parameter of each test point.
The test result obtained according to above-mentioned method of testing is as following table 1:
Table 1
As can be seen from Table 1, it is high without thorium ceramic metal halide lamp efficiency that the embodiment of the present invention provides, colour temperature and relative indices high, if the ceramic metal halide lamp efficiency provided in embodiment 2 is up to 75Lm/w, colour temperature is up to 3970K, and relative indices is up to 85.In addition, because ceramic metal halide in above-described embodiment adopts mentioned above without thorium metal halogen lamp pole, therefore, this is being prepared and safety and environmental protection in use without thorium ceramic gold-halogen lamp.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a metal halogen lamp pole, comprise tungsten electrode bar and molybdenum sheet, one end of described tungsten electrode bar is connected with described molybdenum sheet coaxial electrical, and the other end outer surface is wound with tungsten filament helix, is folded with the spherical or spheroidal some transmitting balls of class between the adjoining spiral tungsten filament of described tungsten filament helix; Wherein, described transmitting ball is made up of following weight percent composition:
Hafnium oxide 0.05% ~ 0.5%;
Lanthana 0.5% ~ 3%;
Ytterbium oxide 0.05% ~ 10%;
Surplus is tungsten.
2. metal halogen lamp pole as claimed in claim 1, it is characterized in that: between the adjoining spiral tungsten filament being folded in tungsten filament helix at described transmitting ball interval, and between same adjacent described helical tungsten filament, the spacing of the described transmitting ball adjacent between two of sandwiched is 0.05mm ~ 0.1mm.
3. ceramic metal halogen lamp pole as claimed in claim 1, is characterized in that: the diameter of described transmitting ball is 0.1mm ~ 0.3mm.
4. the metal halogen lamp pole as described in as arbitrary in claims 1 to 3, is characterized in that: the preparation method of described transmitting ball comprises the steps:
Hafnium oxide, lanthana, ytterbium oxide, tungsten powder are carried out ball-milling treatment in after described ratio mixing in vacuum or inert gas atmosphere, obtains mixed material;
Described mixed material mold pressing is made spherical or similar spheric granules and to be placed in reducing atmosphere sintering processes at 1460 DEG C ~ 1480 DEG C, and continue to cool in reducing atmosphere.
5. metal halogen lamp pole as claimed in claim 4, it is characterized in that: in the step of described sintering processes, at 1460 DEG C ~ 1480 DEG C, the time of sintering processes is 20min ~ 50min.
6. metal halogen lamp pole as claimed in claim 4, it is characterized in that: in the step of the described mixed material of preparation, described hafnium oxide, lanthana, ytterbium oxide, tungsten powder are of a size of 2 μm ~ 5 μm.
7. metal halogen lamp pole as claimed in claim 4, it is characterized in that, in the step of the described mixed material of preparation, the process conditions of described ball-milling treatment are: with tungsten ball for ball-milling medium, rotational speed of ball-mill is 180r/min ~ 250r/min, ratio of grinding media to material is (8 ~ 15): 1, and ball packing factor is 5% ~ 9%, and Ball-milling Time is 30h ~ 60h.
8. a ceramic gold-halogen lamp, comprise metal halogen lamp pole, ceramic sleeve and the ceramic discharge chamber be communicated with described ceramic sleeve and the Illuminant pill be arranged in described ceramic discharge chamber, described metal halogen lamp pole is the arbitrary described metal halogen lamp pole of claim 1 ~ 7, and the surface wrap of described metal halogen lamp pole has tungsten electrode bar one end of tungsten filament helix and tungsten filament helix to stretch in described ceramic discharge chamber, the other end of tungsten electrode bar and molybdenum sheet are sealed in described ceramic sleeve.
9. ceramic gold-halogen lamp as claimed in claim 8, is characterized in that: the power of described ceramic gold-halogen lamp is 150W ~ 400W.
10. ceramic gold-halogen lamp as claimed in claim 8 or 9, is characterized in that: described Illuminant pill is (0.005 ~ 0.015) by mol ratio: (6.0 × 10
-4~ 7.0 × 10
-4): (4.0 × 10
-5~ 4.7 × 10
-5) sodium iodide, thallium iodide and indium iodide are prepared from.
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| CN109357528A (en) * | 2018-08-14 | 2019-02-19 | 长安大学 | A kind of ceramic material sintering furnace and its control method using electric field-assisted |
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| CN109357528A (en) * | 2018-08-14 | 2019-02-19 | 长安大学 | A kind of ceramic material sintering furnace and its control method using electric field-assisted |
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