AT41247B - Process for the production of essentially tungsten respectively. Molybdenum existing incandescent bodies. - Google Patents
Process for the production of essentially tungsten respectively. Molybdenum existing incandescent bodies.Info
- Publication number
- AT41247B AT41247B AT41247DA AT41247B AT 41247 B AT41247 B AT 41247B AT 41247D A AT41247D A AT 41247DA AT 41247 B AT41247 B AT 41247B
- Authority
- AT
- Austria
- Prior art keywords
- molybdenum
- production
- tungsten
- existing incandescent
- incandescent bodies
- Prior art date
Links
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims description 10
- 229910052721 tungsten Inorganic materials 0.000 title claims description 10
- 239000010937 tungsten Substances 0.000 title claims description 10
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 title claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 title claims description 5
- 239000011733 molybdenum Substances 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 4
- 238000004519 manufacturing process Methods 0.000 title description 2
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 150000002739 metals Chemical class 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 claims description 2
- 229910052776 Thorium Inorganic materials 0.000 claims description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 2
- 230000003111 delayed effect Effects 0.000 claims description 2
- 150000002927 oxygen compounds Chemical class 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 229910052684 Cerium Inorganic materials 0.000 claims 1
- 229910052779 Neodymium Inorganic materials 0.000 claims 1
- 229910052777 Praseodymium Inorganic materials 0.000 claims 1
- -1 ammonitrates Chemical class 0.000 claims 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims 1
- 150000001860 citric acid derivatives Chemical class 0.000 claims 1
- 229910052746 lanthanum Inorganic materials 0.000 claims 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims 1
- 150000002823 nitrates Chemical class 0.000 claims 1
- 150000003891 oxalate salts Chemical class 0.000 claims 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 claims 1
- 150000003892 tartrate salts Chemical class 0.000 claims 1
- 238000007792 addition Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- ZCUFMDLYAMJYST-UHFFFAOYSA-N thorium dioxide Chemical compound O=[Th]=O ZCUFMDLYAMJYST-UHFFFAOYSA-N 0.000 description 1
- 229910003452 thorium oxide Inorganic materials 0.000 description 1
Landscapes
- Inorganic Insulating Materials (AREA)
- Discharge Lamp (AREA)
Description
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Verfahren zur Herstellung von im wesentlichen aus Wolfram bezw. Molybdän bestehenden Glühkörpern.
Glühkorper für elektrische Lampen mit Fäden, die nach einem Pasteverfahren aus reinen Metallen bergestellt wurden, weisen nach einiger Brennzeit deutliche kristallinische Struktur auf. Das Auftreten dieses Merkmales wäre kein Fbelstand, wenn dadurch die Gebrechlichkeit des Fadens nicht zunehmen würde. Es kommt zuweilen vor. dass Glühfäden, die z. B. aus reinem Wolfram bestehen, nach verhältnismässig kurzer Zeit (einige hundert Brennstunden) eine stark ausgeprägte krystallinischc Struktur annehmen und dann entweder beim Ein-oder Ausschalten an einer oder oft mehreren Stellen reissen. Durch Zusatz geeigneter Mittel zui den zur Herstellung solcher Glühkörper verwendeten Pasten kann man eine Verzögerung dieser Erscheinung hervorrufen.
Als solche Mittel haben sich die Verbindungen, insbesondere die Sauerstoffverbindungen der seltenen Erdmetalle. z. B. des Thoriums. Zirkoniums. Erbiums. Ceriums. Lanthans bewährt. weiche den Pasten zugesetzt werden und nach dem Formieren, bei welchem eine Reduktion stattfindet, als glühbeständige, stromleitende Suboxyde oder Metalle selbst, allenfalls auch gemischt, im Faden verbleiben.
Man hat die Verwendung von Gemischen aus Leitern zweiter Klasse und Wolfram für die
EMI1.1
Fäden oft schon nach zirka 100 Stunden zeit, erst nach 800 - 1500 Stunden auftritt.
Es ist klar, dual. man der jeweils verwendeten Paste nur solche Verbindungen der seltenen Erdmetalle beimengen kann, derne Bestandteile keinen schädlichen Einfluss auf das Wolfram-
EMI1.2
Zusätze eine richtige ist. su wird dadurch die Qualität des Wolframfadens gar nicht schädlich beeinflusst.
So hat man z. B. beobachtet, dass Zusätze von Thoriumoxvd zur Paste, die im fertigen
Faden einen Rückstand bis zu zirka 7-10% Suboxyd oder Metall hinterlassen. die Lebensdauer ) eines Leuchtkorpers aus Wolfram eventuell Molybdän nicht beeinflussen. Die leitenden Rückstände
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EMI2.1
von Zirkoniumoxid kann man bei Wolfram-Leuchtkörpern bis zu zirka 10% erhöhen. Die leitende Rückstände eines Gemenges von Thoriumoxyd und Zirkoniumoxyd können sogar bis zu ca. 15%
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Process for the production of essentially tungsten respectively. Molybdenum existing incandescent bodies.
Incandescent bodies for electric lamps with filaments which have been made from pure metals using a paste process show a clear crystalline structure after a certain burning time. The occurrence of this feature would not be foul if it did not increase the fragility of the thread. It happens from time to time. that filaments that z. B. consist of pure tungsten, after a relatively short time (a few hundred burning hours) take on a strongly pronounced crystalline structure and then tear either when switching on or off in one or often several places. By adding suitable agents to the pastes used to produce such incandescent bodies, this phenomenon can be delayed.
The compounds, especially the oxygen compounds of the rare earth metals, have proven to be such means. z. B. Thorium. Zirconium. Erbium. Ceriums. Lanthans proven. soft are added to the pastes and after forming, in which a reduction takes place, remain in the thread as annealing-resistant, current-conducting sub-oxides or metals themselves, possibly mixed.
One has the use of mixtures of second class conductors and tungsten for that
EMI1.1
Threads often appear after about 100 hours, only after 800 - 1500 hours.
Clearly, dual. you can only add those compounds of the rare earth metals to the paste used, whose constituents do not have a harmful effect on the tungsten
EMI1.2
Additions is a correct one. This does not affect the quality of the tungsten filament at all.
So one has z. B. observed that additions of Thoriumoxvd to the paste, which are in the finished
Threads leave a residue of up to 7-10% suboxide or metal. the service life) of a lamp made of tungsten, possibly molybdenum. The conductive residues
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of zirconium oxide can be increased by up to about 10% for tungsten lamps. The conductive residues of a mixture of thorium oxide and zirconium oxide can even be up to approx. 15%
EMI2.2
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT41247T | 1906-10-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT41247B true AT41247B (en) | 1910-03-10 |
Family
ID=3559975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT41247D AT41247B (en) | 1906-10-22 | 1906-10-22 | Process for the production of essentially tungsten respectively. Molybdenum existing incandescent bodies. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT41247B (en) |
-
1906
- 1906-10-22 AT AT41247D patent/AT41247B/en active
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