DE2165520C3 - Process for increasing the voltage and insulation strength of Ferritemagnetec and application of this process for the production of a protective gas relay - Google Patents
Process for increasing the voltage and insulation strength of Ferritemagnetec and application of this process for the production of a protective gas relayInfo
- Publication number
- DE2165520C3 DE2165520C3 DE19712165520 DE2165520A DE2165520C3 DE 2165520 C3 DE2165520 C3 DE 2165520C3 DE 19712165520 DE19712165520 DE 19712165520 DE 2165520 A DE2165520 A DE 2165520A DE 2165520 C3 DE2165520 C3 DE 2165520C3
- Authority
- DE
- Germany
- Prior art keywords
- layer
- metal layer
- ferrite magnet
- ferrite
- glass
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/025—Other inorganic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/0302—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions
- H01F1/0311—Compounds
- H01F1/0313—Oxidic compounds
- H01F1/0315—Ferrites
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Hard Magnetic Materials (AREA)
- Magnetic Ceramics (AREA)
- Soft Magnetic Materials (AREA)
Description
Die vorliegende Erfindung betrifft ein Verfahren zum Erhöhen der Spannungs- und Isolationsfestigkeit von ·-»-. Ferritmagneten, insbesondere von innerhalb von Vakuum- oder Schutzgasbauelementen angeordneten Ferritmagneten, durch Überziehen mit einer glasartigen Schicht und die Anwendung dieses Verfahrens zur Herstellung eines Schutzgasrelais. miThe present invention relates to a method for increasing the voltage and insulation strength from · - »-. Ferrite magnets, in particular ferrite magnets arranged within vacuum or inert gas components, by coating with a vitreous layer and using this method for Manufacture of a protective gas relay. mi
Aus der GB-PS 10 05 627 ist ein aus ferromagnetischen Blechen zusammengesetzter magnetischer Kern bekannt, dessen einzelne Bleche durch Glasschichten miteinander verbunden sind. Dieser Kern wird hergestellt, indem die einzelnen Bleche zunächst mit einer h-, Glasschicht versehen werden und dann die aufeinandergepackten Bleche erhitzt werden, wodurch die Glasschichten miteinander verschmelzen. Um zu verhindern, daß gegebenenfalls Silizium in die Glasschichten diffundiert und die Glaszusammensetzung verändert, werden dort vor Aufbringen der Glasscbicht die Kernbleche galvanisch mit einer dünnen Nickelschicht versehen.From GB-PS 10 05 627 a composed of ferromagnetic sheets magnetic core is known, the individual sheets of which are connected to one another by layers of glass. This core is made by first providing the individual sheets with a layer of h, glass and then the ones that are packed on top of one another Sheets are heated, causing the layers of glass to fuse together. To prevent, that if necessary silicon diffuses into the glass layers and changes the glass composition, Before the glass layer is applied, the core sheets are electroplated with a thin layer of nickel Mistake.
Es ist weiter bekannt, innerhalb von luftdicht gekapselten Bauelementen, wie z. B. Schutzrohrrelais, Ferritmagnete einzubauen. Es ist ferner bekannt, hierzu Bariumferritmagnete zu verwenden und diese mit einer dünnen Glasschicht zu bedecken, um eine Erhöhung der Spannungs- und Isolationsfestigkeit zu erzielen. Mit einer Glasschicht versehene Ferritmaterialien sind z. B. aus der US-PS 28 77 144 bekanntIt is also known within airtightly encapsulated components such. B. protection tube relay, Install ferrite magnets. It is also known to do this Use barium ferrite magnets and cover them with a thin layer of glass to increase the To achieve voltage and insulation strength. Ferrite materials provided with a glass layer are e.g. B. from US-PS 28 77 144 known
Es hat sich gezeigt, daß solche beglasten Ferritmagnete bezüglich ihrer Temperaturabhängigkeit und Spannungsfestigkeit teilweise stark unterschiedliche Werte aufweisen, was u. a. darauf zurückzuführen ist, daß die Beglasungsschichten nicht hinreichend dicht sind, sondern teilweise von feinsten Rissen durchsetzt sind.It has been shown that such glazed ferrite magnets with regard to their temperature dependency and dielectric strength, some of them are very different Have values, which i.a. is due to that the glazed layers are not sufficiently dense, but are partially interspersed with the finest cracks are.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein neuartiges Herstellungsverfahren für mit einer Glasschicht bedeckte Ferritmagnete anzugeben, das insbesondere hinsichtlich der Haftfestigkeit und Dichtheit der Glasschicht verbesserte Ferritmagnete herzustellen gestattetThe present invention is based on the object of a novel manufacturing method for with specify a glass layer covered ferrite magnets, in particular with regard to the adhesive strength and The tightness of the glass layer made it possible to produce improved ferrite magnets
Gemäß der vorliegenden Erfindung wird vorgeschlagen, daß der Ferritmagnet zunächst mit einer Metallschicht versehen wird, daß dann bei einer erhöhten Temperatur in einer oxydierenden Atmopshäre eine Oxydation der Metallschicht durchgeführt wird und daß dann die glasartige Schicht aufgebracht wird.According to the present invention it is proposed that the ferrite magnet is first provided with a metal layer, then with an increased Temperature in an oxidizing atmosphere an oxidation of the metal layer is carried out and that then the vitreous layer is applied.
Ein wesentlicher Vorteil des erfindungsgemäßen Verfahrens wird darin gesehen, daß die in der vorgeschlagenen Weise hergestellten Ferritmagnete auch bei langer Benutzung ihre hohe Spannungsfestigkeit und ihre guten Isolationseigenschaften beibehalten. Hinzu kommt, daß die erzielten hohen Isolationswerte weitgehend temperaturunabhängig gehalten werden können.A major advantage of the method according to the invention is seen in the fact that the proposed way ferrite magnets produced their high dielectric strength even after long use and maintain their good insulation properties. In addition, the high insulation values achieved can be kept largely independent of temperature.
Anhand des nachfolgend näher beschriebenen bevorzugten Herstellungsverfahrens wird der Anmeldungsgegenstand näher erklärt werden. The subject of the application will be explained in more detail on the basis of the preferred manufacturing process described in more detail below.
Ein Bariumferritmagnet, dec zum Einbau in ein Schutzrohrrelais vorgesehen ist, wird zweckmäßig zunächst einem Scheuervorgang unterworfen, um scharfe Kanten und Ecken abzurunden und um zu erreichen, daß bei der später erfolgenden Beglasung das Glas sich besser um die Kanten herumziehtA barium ferrite magnet, which is intended for installation in a protective tube relay, is useful first subjected to a scrubbing process in order to round off sharp edges and corners and around achieve that when the glazing takes place later, the glass is better drawn around the edges
Nachdem der Magnet gereinigt ist, wird er mit einer Metallschicht, bevorzugt mit einer Kupferschicht von 1 bis 5μΐπ, insbesondere 1,5 bis 2 μπι, bedeckt. Die Herstellung einer solchen Kupferschicht erfolgt zweckmäßig durch Abscheiden in einem stromlosen Kupferbad. Der so verkupferte Magnet wird dann in einem Ofen bei einer Temperatur von etwa 700° C bis 800° C oxydiert, was zweckmäßig in einer Stickstoff-Sauerstoffatmosphäre erfolgt. Es wurde z. B. eine Atmosphäre verwendet, die 2401 Stickstoff und 601 Sauerstoff enthielt. Durch diese Temperaturbehandlung und Oxydation erzielt man sehr hohe und eindeutige Isolationswiderstände des Magneten.After the magnet is cleaned, it is coated with a metal layer, preferably with a copper layer of 1 to 5μΐπ, in particular 1.5 to 2 μπι covered. the Such a copper layer is expediently produced by deposition in an electroless copper bath. The copper-plated magnet is then placed in an oven at a temperature of around 700 ° C to 800 ° C oxidized, which is expedient in a nitrogen-oxygen atmosphere he follows. It was z. B. used an atmosphere containing 2401 nitrogen and 601 oxygen contained. Through this temperature treatment and oxidation one achieves very high and unambiguous Insulation resistance of the magnet.
Nach erfolgter Oxydation wird nun auf diese oxydierte Oberfläche des Magneten die Glasschicht aufgebracht. Dies erfolgt zweckmäßig dadurch, daß man die Oberfläche des Magneten mit Glaslot besprüht und somit eine Schichtdicke von etwa 60 bis 90μιη herstellt. Danach wird der Magnet mit der aufgesprühtenAfter the oxidation has taken place, the glass layer is then placed on this oxidized surface of the magnet upset. This is expediently done by spraying the surface of the magnet with glass solder and thus produces a layer thickness of about 60 to 90μιη. Then the magnet is sprayed on with the
3 43 4
Glaslotschicht bevorzugt bei Temperaturen von etwa so hergestellte Glasschicht sehr einfach zu BefestigungGlass solder layer is preferably very easy to attach at temperatures of about the glass layer produced in this way
880" C unter Luftzugabe erhitzt, wobei die sogenannte des Ferritmagneten an Bauteilen verwendet werden,880 "C heated with the addition of air, whereby the so-called ferrite magnets are used on components,
Umsetzung des Glases in eine Glasschicht erfolgt Diese indem die Glasschicht zur Anglasung benutzt wird,The glass is converted into a glass layer. This is done by using the glass layer for glazing,
Glasschicht ist dann mit dem Ferritmagneten sehr Bei einem bevorzugten Ausführungsbeispiel bestandGlass layer is then very consisted of the ferrite magnet. In a preferred embodiment
haftfest verschmolzen. "· der Ferritmagnet aus Bariumferrit und die oxydiertefirmly fused. "· The ferrite magnet made of barium ferrite and the oxidized one
Gemäß einer Weiterbildung der Erfindung kann diese Metallschicht aus Kupferoxyd,According to a further development of the invention, this metal layer made of copper oxide,
Claims (9)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712165520 DE2165520C3 (en) | 1971-12-30 | 1971-12-30 | Process for increasing the voltage and insulation strength of Ferritemagnetec and application of this process for the production of a protective gas relay |
DD16748272A DD101506A1 (en) | 1971-12-30 | 1972-12-12 | |
HULI000239 HU164630B (en) | 1971-12-30 | 1972-12-18 | |
JP48004435A JPS4881090A (en) | 1971-12-30 | 1972-12-25 | |
CH1885372A CH558586A (en) | 1971-12-30 | 1972-12-27 | PROCESS FOR INCREASING THE ELECTRICAL VOLTAGE AND THERMAL INSULATION STRENGTH OF FERRITE MAGNETS. |
SE1720872A SE387104B (en) | 1971-12-30 | 1972-12-29 | PROCEDURE FOR INCREASING THE ELECTRICAL VOLTAGE AND INSULATION RESISTANCE OF FERRIT MAGNETS |
AT1116672A AT317379B (en) | 1971-12-30 | 1972-12-29 | Method for increasing the voltage and insulation strength of ferrite magnets |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712165520 DE2165520C3 (en) | 1971-12-30 | 1971-12-30 | Process for increasing the voltage and insulation strength of Ferritemagnetec and application of this process for the production of a protective gas relay |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2165520A1 DE2165520A1 (en) | 1973-07-12 |
DE2165520B2 DE2165520B2 (en) | 1977-11-24 |
DE2165520C3 true DE2165520C3 (en) | 1978-07-20 |
Family
ID=5829680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19712165520 Expired DE2165520C3 (en) | 1971-12-30 | 1971-12-30 | Process for increasing the voltage and insulation strength of Ferritemagnetec and application of this process for the production of a protective gas relay |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS4881090A (en) |
AT (1) | AT317379B (en) |
CH (1) | CH558586A (en) |
DD (1) | DD101506A1 (en) |
DE (1) | DE2165520C3 (en) |
HU (1) | HU164630B (en) |
SE (1) | SE387104B (en) |
-
1971
- 1971-12-30 DE DE19712165520 patent/DE2165520C3/en not_active Expired
-
1972
- 1972-12-12 DD DD16748272A patent/DD101506A1/xx unknown
- 1972-12-18 HU HULI000239 patent/HU164630B/hu unknown
- 1972-12-25 JP JP48004435A patent/JPS4881090A/ja active Pending
- 1972-12-27 CH CH1885372A patent/CH558586A/en not_active IP Right Cessation
- 1972-12-29 AT AT1116672A patent/AT317379B/en active
- 1972-12-29 SE SE1720872A patent/SE387104B/en unknown
Also Published As
Publication number | Publication date |
---|---|
DD101506A1 (en) | 1973-11-12 |
DE2165520A1 (en) | 1973-07-12 |
JPS4881090A (en) | 1973-10-30 |
HU164630B (en) | 1974-03-28 |
SE387104B (en) | 1976-08-30 |
AT317379B (en) | 1974-08-26 |
DE2165520B2 (en) | 1977-11-24 |
CH558586A (en) | 1975-01-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) | ||
EF | Willingness to grant licences | ||
8339 | Ceased/non-payment of the annual fee |