AT137445B - Insulating body or layer for indirectly to be heated cathodes of electrical discharge vessels. - Google Patents
Insulating body or layer for indirectly to be heated cathodes of electrical discharge vessels.Info
- Publication number
- AT137445B AT137445B AT137445DA AT137445B AT 137445 B AT137445 B AT 137445B AT 137445D A AT137445D A AT 137445DA AT 137445 B AT137445 B AT 137445B
- Authority
- AT
- Austria
- Prior art keywords
- indirectly
- insulating body
- layer
- electrical discharge
- oxide
- Prior art date
Links
Landscapes
- Powder Metallurgy (AREA)
Description
<Desc/Clms Page number 1>
Isolierkörper oder-schieht für mittelbar zu heizende Kathoden von elektrischen Entladungsgefässen.
EMI1.1
<Desc/Clms Page number 2>
In manchen Fällen empfiehlt es sich, aus den Oxyden nicht die reinen Spinelle herzustellen, sondern ein Oxyd im Überschuss zu verwenden. Jedoch soll der Überschuss im allgemeinen nicht mehr als 20% von der zur Bildung der Verbindung notwendigen Oxydmenge betragen.
Es ist auch ohne weiteres möglich, die Oxydmischung unmittelbar zur Herstellung der Isolierkörper und-schichten zu verwenden. Die Umwandlung des Gemisches in die Verbindung findet in diesem Falle während der Sinterbehandlung der Isolierkörper bzw. während der Aufsinterung der Isolierschichten statt.
Wenn man zur Herstellung der Isolierkörper Mischungen aus der gepulverten Verbindung und noch nicht umgewandeltem Oxydgemenge verwendet, so kann man weiterhin das Porenvolumen und die Korngrösse der Isolierkörper dadurch weitgehend beeinflussen. Dies ist deshalb wichtig, weil Isolerkörper mit einem gewissen Porenvolumen besonders durchschlagssicher zu sein scheinen.
Schliesslich kann man auch an Stelle einer Verbindung eine Mischung aus mehreren wie z. B. MgO Als0 ; i mit BeO AlOg zur Herstellung der Isolierkörper und-schichten verwenden.
PATENT-ANSPRÜCHE :
1. Isolierkörper oder-schicht für mittelbar zu heizende Kathoden von elektrischen Entladunggefässen, dadurch gekennzeichnet, dass dieser Körper oder diese Schicht ganz oder zum Teil aus Verbin-
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besteht.
<Desc / Clms Page number 1>
Insulating body or -schicht for indirectly to be heated cathodes of electrical discharge vessels.
EMI1.1
<Desc / Clms Page number 2>
In some cases it is advisable not to make pure spinels from the oxides, but to use an excess of oxide. However, the excess should generally not be more than 20% of the amount of oxide required to form the compound.
It is also easily possible to use the oxide mixture directly to produce the insulating bodies and layers. The conversion of the mixture into the compound takes place in this case during the sintering treatment of the insulating bodies or during the sintering on of the insulating layers.
If mixtures of the powdered compound and not yet converted oxide mixture are used to produce the insulating body, the pore volume and the grain size of the insulating body can still be largely influenced. This is important because insulator bodies with a certain pore volume appear to be particularly puncture-proof.
Finally, instead of a compound, a mixture of several such. B. MgO Als0; Use i with BeO AlOg to produce the insulating bodies and layers.
PATENT CLAIMS:
1. Insulating body or layer for indirectly to be heated cathodes of electrical discharge vessels, characterized in that this body or this layer is wholly or partly made of connec-
EMI2.1
consists.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE137445T | 1931-12-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT137445B true AT137445B (en) | 1934-05-11 |
Family
ID=34257000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT137445D AT137445B (en) | 1931-12-21 | 1932-12-12 | Insulating body or layer for indirectly to be heated cathodes of electrical discharge vessels. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT137445B (en) |
-
1932
- 1932-12-12 AT AT137445D patent/AT137445B/en active
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