SU252476A1 - ELECTRODE FOR GAS DISCHARGE LAMPS - Google Patents
ELECTRODE FOR GAS DISCHARGE LAMPSInfo
- Publication number
- SU252476A1 SU252476A1 SU1212160A SU1212160A SU252476A1 SU 252476 A1 SU252476 A1 SU 252476A1 SU 1212160 A SU1212160 A SU 1212160A SU 1212160 A SU1212160 A SU 1212160A SU 252476 A1 SU252476 A1 SU 252476A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- electrode
- gas discharge
- discharge lamps
- tungsten
- temperature
- Prior art date
Links
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 5
- 229910052721 tungsten Inorganic materials 0.000 description 5
- 239000010937 tungsten Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive Effects 0.000 description 4
- 230000003213 activating Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- RUDFQVOCFDJEEF-UHFFFAOYSA-N oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 3
- 230000002285 radioactive Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- ZCUFMDLYAMJYST-UHFFFAOYSA-N thorium dioxide Chemical compound O=[Th]=O ZCUFMDLYAMJYST-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N AI2O3 Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000015450 Tilia cordata Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910003452 thorium oxide Inorganic materials 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Description
Известны электроды дл газоразр дных ламп, выполненные из вольфрама, легированного активируюш,ей добавкой в количестве 1,5-3 вес. %.Electrodes for gas discharge lamps made of tungsten, doped activated, are known, with an additive in the amount of 1.5-3 wt. %
Однако использование в качестве активатора дл вольфрамовых электродов радиоактивной двуокиси тори требует защиты обслуживающего персонала ири приготовлеиии смесей из порощков вольфрама и окиси тори от воздействи радиоактивного излучени и иопадаии радиоактивной пыли в оргаиизм.However, the use of radioactive thorium dioxide as an activator for tungsten electrodes requires the protection of service personnel and the preparation of mixtures of tungsten and thorium oxide powders from the effects of radioactive radiation and radioactive dust iopadia into organism.
Кроме того, плотность тока эмиссии дл этого сплава при температуре 1500°К составл ет 18 ма/см-.In addition, the emission current density for this alloy at a temperature of 1500 ° K is 18 ma / cm.
Предлагаемый электрод отличаетс от известиых тем, что в качестве активирующей добавки применена окись иттри .The proposed electrode differs from lime in that yttrium oxide is used as an activating additive.
Такое вьшолиение электродов позвол ет повысить допустимую плотность тока эмиссии до 20-30 ма/см2 и улучщить услови труда ири их производстве.Such an electrode can increase the allowable emission current density to 20–30 ma / cm2 and improve the working conditions and their production.
При изготовлении ирутков иттрированного вольфрама в качестве исходных материаловIn the manufacture of yttruk of yttrated tungsten as raw materials
примен ют порошки окиси иттри (YoOs) и вольфрама марки ВЧ зериистостью 2-5 мк. Смешивание исходных материалов производ т в фарфоровых барабанах в течение 10-20 час.Yttrium oxide (YoOs) and high-grade tungsten grades of 2-5 microns are used. Mixing of raw materials is carried out in porcelain drums for 10-20 hours.
Из полученной смеси прессуютс штабики, спекаемые в водородных печах при медленном подъеме температуры от 800 до в противн х, засыпанных глиноземом. Выдержка на конечной температуре составл ет 1 час.From the mixture obtained, the moldings are sintered in hydrogen furnaces with a slow rise in temperature from 800 to opposite, covered with alumina. Exposure at final temperature is 1 hour.
Штабики свариваютс в водородных сварочных апиарата.х нри температуре 2500°С в течение 20 мин. Ковка сваренных штабиков до необходимых диаметров производитс с предварительным нагревом в угольной трубе.Heads are welded in hydrogen welding machines. At a temperature of 2500 ° C for 20 minutes. Forging welded rods to the required diameters is performed with preheating in the coal pipe.
Предмет изобретени Subject invention
Электрод дл газоразр дных ламп, выполненный из вольфрама, легироваиного активирующей добавкой в количестве 1,5-3 вес. %, отличающийс тем, что, с целью повышени допустимой илотиости тока эмиссии и улучшени условий труда при производстве электродов , в качестве активирующей добавки иримеиеиа окись иттри .Electrode for gas discharge lamps made of tungsten alloyed with an activating additive in the amount of 1.5-3 wt. %, characterized in that, in order to increase the allowable emission current and improve working conditions in the production of electrodes, yttrium oxide is used as an activating additive.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU252476A1 true SU252476A1 (en) |
Family
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4052634A (en) * | 1975-06-20 | 1977-10-04 | U.S. Philips Corporation | High-pressure gas discharge lamp and electron emissive electrode structure therefor |
| US4117367A (en) * | 1974-05-13 | 1978-09-26 | U.S. Philips Corporation | High-pressure discharge lamp |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4117367A (en) * | 1974-05-13 | 1978-09-26 | U.S. Philips Corporation | High-pressure discharge lamp |
| US4052634A (en) * | 1975-06-20 | 1977-10-04 | U.S. Philips Corporation | High-pressure gas discharge lamp and electron emissive electrode structure therefor |
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