AT77830B - Electron donating cathodes and methods of making the same. - Google Patents

Electron donating cathodes and methods of making the same.

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Publication number
AT77830B
AT77830B AT77830DA AT77830B AT 77830 B AT77830 B AT 77830B AT 77830D A AT77830D A AT 77830DA AT 77830 B AT77830 B AT 77830B
Authority
AT
Austria
Prior art keywords
same
cathodes
making
methods
electron donating
Prior art date
Application number
Other languages
German (de)
Original Assignee
Ver Telephon Czeija Nissl & Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ver Telephon Czeija Nissl & Co filed Critical Ver Telephon Czeija Nissl & Co
Application granted granted Critical
Publication of AT77830B publication Critical patent/AT77830B/en

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Description

  

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 befriedigendes Resultat ergeben. 



   Wenn das Überziehen beendet ist. wird der Draht elektrisch bis zum Glühen erhitzt, zum Zwecke, den Barium-Harzsäuresalzüberzug bis zur   Entzündungstemperatur,   beispielsweise bis zu einer Temperatur von ungefähr    SilO his 9000   C zu bringen. Der Überzug wird einige Zeit, beispielsweise zwei Stunden lang, auf dieser hohen Temperatur erhalten. 



   Durch   das vorbeschriebene Verfahlt wird   ein Draht oder dgl. erhalten, der mit einem dichten, eng anhaftenden Film überzogen   ist, welcher vermutlich   aus Bariumoxyd und Strontiumoxyd besteht. Dieser aus   mehrfachen   Schichten bestehende Überzug ist von ausserordentlich grosser Dauerhaftigkeit und Konstanz   liniaK'htlich   der Elektronen abgebenden Wirkung, wenn der Draht als erhitzte Kathode   einer Vakuumröhre benutzt wird.   



    I'ATXT-AXHPRÜCHE : 1. Verfahren zur Herstellung von Elektronen abgebenden Kathoden, dadurch gekennzeichnet, dass auf einen Draht oder dgl. ein oder mehrere Überzüge einer organischen Verbindung eines Metalles der Gruppe alkalischer Erden aufgetragen werden und sodann dieser Draht auf Entzündungstemperatur gebracht wird.



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   When the coating is finished. the wire is heated electrically until it is glowing, for the purpose of bringing the barium resin acid salt coating up to the ignition temperature, for example up to a temperature of approximately SilO to 9000 C. The coating is kept at this high temperature for some time, for example two hours.



   As a result of the procedure described above, a wire or the like is obtained which is covered with a dense, tightly adhering film, which presumably consists of barium oxide and strontium oxide. This coating, which consists of multiple layers, is extremely durable and constant in terms of its electron-releasing effect when the wire is used as the heated cathode of a vacuum tube.



    I'ATXT-AXHPRÜCHE: 1. Process for the production of electron-emitting cathodes, characterized in that one or more coatings of an organic compound of a metal of the alkaline earth group are applied to a wire or the like and this wire is then brought to ignition temperature.

Claims (1)

2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass auf den Draht oder dgl. aufeinanderfolgende Überzüge aufgetragen werden, die verschiedene Metalle der Gruppe alkalischer Erden enthalten, wobei dieser Überzüge eine organische Verbindung eines dieser Metalles bildet. 2. The method according to claim 1, characterized in that successive coatings are applied to the wire or the like, which contain different metals from the group of alkaline earths, these coatings forming an organic compound of one of these metals. 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass das andere der genannten Metalle in Form eines Oxyds desselben abgetragen wird. 3. The method according to claim 2, characterized in that the other of the said metals is removed from the same in the form of an oxide. 4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der letzte auf den Draft oder dgl. aufgetragene Überzug in Form einer organischen Verbindung eines Metalles der Gruppe alkalischer Erden aufgetragen wird. 4. The method according to claim 1, characterized in that the last coating applied to the draft or the like is applied in the form of an organic compound of a metal from the group of alkaline earths. 5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der erste auf den Draht oder dgl aufgetragene Überzug in Form eines oxids veines Metalles der Gruppe alkalischer Erden auf. getragen wird. EMI2.2 5. The method according to claim 1, characterized in that the first coating applied to the wire or the like is in the form of an oxide veines metal from the group of alkaline earths. will be carried. EMI2.2
AT77830D 1914-12-26 1915-12-18 Electron donating cathodes and methods of making the same. AT77830B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US77830XA 1914-12-26 1914-12-26

Publications (1)

Publication Number Publication Date
AT77830B true AT77830B (en) 1919-08-25

Family

ID=21728121

Family Applications (1)

Application Number Title Priority Date Filing Date
AT77830D AT77830B (en) 1914-12-26 1915-12-18 Electron donating cathodes and methods of making the same.

Country Status (1)

Country Link
AT (1) AT77830B (en)

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