DE719646C - Ceramic body that can be fused with glass - Google Patents

Ceramic body that can be fused with glass

Info

Publication number
DE719646C
DE719646C DEP69750D DEP0069750D DE719646C DE 719646 C DE719646 C DE 719646C DE P69750 D DEP69750 D DE P69750D DE P0069750 D DEP0069750 D DE P0069750D DE 719646 C DE719646 C DE 719646C
Authority
DE
Germany
Prior art keywords
glass
ceramic body
fused
ceramic
bodies
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
Application number
DEP69750D
Other languages
German (de)
Inventor
Dr Hans Pulfrich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority to DEP69750D priority Critical patent/DE719646C/en
Application granted granted Critical
Publication of DE719646C publication Critical patent/DE719646C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B37/00Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/02Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
    • C04B37/021Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles in a direct manner, e.g. direct copper bonding [DCB]
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B37/00Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/02Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
    • C04B37/023Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used
    • C04B37/025Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used consisting of glass or ceramic material
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B37/00Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/04Joining burned ceramic articles with other burned ceramic articles or other articles by heating with articles made from glass
    • C04B37/042Joining burned ceramic articles with other burned ceramic articles or other articles by heating with articles made from glass in a direct manner
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/72Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics
    • C04B2235/728Silicon content
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32Ceramic
    • C04B2237/34Oxidic
    • C04B2237/345Refractory metal oxides
    • C04B2237/346Titania or titanates
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32Ceramic
    • C04B2237/34Oxidic
    • C04B2237/345Refractory metal oxides
    • C04B2237/348Zirconia, hafnia, zirconates or hafnates
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/40Metallic
    • C04B2237/405Iron metal group, e.g. Co or Ni
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/40Metallic
    • C04B2237/405Iron metal group, e.g. Co or Ni
    • C04B2237/406Iron, e.g. steel
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/40Metallic
    • C04B2237/407Copper
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/40Metallic
    • C04B2237/408Noble metals, e.g. palladium, platina or silver

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Products (AREA)

Description

Mit Glas verschmelzbarer keramischer Körper Bei der Herstellung von Vakuumgefäßen besteht sehr häufig das Bedürfnis; keramische Körper als Anachmelzkörper zum Anschmnelzen von Glas zu verwenden. Diese Verschmelzungen bereiten besonders bei der Verwendung von leicht schmelzenden Gläsern, sog. Weichglas, große Schwierigkeiten. Beim Abkühlen entstehen nahezu immer Sprünge, die das Gefäß undicht machen.Ceramic body fusible with glass In the manufacture of Very often there is a need for vacuum vessels; ceramic bodies as melt-on bodies to be used for melting glass. These amalgamations particularly prepare when using easily melting glasses, so-called soft glass, great difficulties. When it cools down, cracks almost always occur, which make the container leaky.

Durch Versuche wurde festgestellt, daß diese Sprünge in den mehrfachen Änderungen des Ausdehnungskoeffizienten der im keramischen Körper enthaltenen Kieselsäure ihre Ursache haben. Zur Vermeidung dieser Störungen wird nach der Erfindung zum Anschmelzen von Glas ein keramischer Körper benutzt, der aus Berylliumioxyd und Titansäure oder beiden besteht. Die Titansäure oder Zirkonsäure dient dabei als Ersatz der bei derartigen keramischen Körpern sonst meist verwendeten Kieselsäure.Experiments have shown that these cracks in multiple Changes in the expansion coefficient of the silica contained in the ceramic body have their cause. To avoid these disturbances is according to the invention for Fusing glass uses a ceramic body made of beryllium dioxide and Titanic acid or both. The titanic acid or zirconic acid serves as a Replacement of the silica usually used in ceramic bodies of this type.

Besonders bewährt haben sich keramische Körper, bei denen Mengenverhältnisse verwendet .sind, die abgesättigten Verbindungen, also den Meta- oder Orthotitanaten und -zirkonaten, -entsprechen. Beispiele solcher molekularen Zusammensetzungen sind die folgenden: 2 Ble0 - r Ti02, r B:e0 # TiO?, 2 Be0 # i Zr 02, z Be0 - r Zr02 und deren Gemische. Die aus den genannten Stoffen hergestellten keramischen Körper sind bei etwa 140o bis 1500' C leicht zu sintern. Wenn es auch im allgemeinen vorzuziehen sein wird, sie rein zu verwenden, so kann man ihnen doch auch für manche Zwecke mit Vorteil. Beimengungen geben, z. B. um die Sinterungstemperatur herabzusetzen. Die Körper sintern vollkommen vakuumdicht und haben eine ausgezeichnete Temperaturwechs:elbeständigkeit. Ihre Verschmelzung mit Weichglas macht wegen des günstigen Ausdehnungskoeffizienten keinerlei Schwierigkeiten; ebenso ist eine Verbindung mit Metallen, wie Kupfermanteldraht, Chromeisen, Chromnickel, Eisennickel, Platin usw., leicht herzustellen. Hierbei kann zum Abdichten. eine Emaille oder ein Weichglas benutzt werden. Die Metall:& können aber auch durch Aufspritzen oder Aufsintern befestigt werden.Ceramic bodies in which quantitative proportions are used that correspond to the saturated compounds, i.e. the meta- or orthotitanates and -zirconates, have proven particularly useful. Examples of such molecular compositions are as follows: 2 Ble0 - r Ti02, r B: e0 # TiO ?, 2 Be0 # i Zr 02, z Be0 - r Zr02 and mixtures thereof. The ceramic bodies made of the aforementioned substances are easy to sinter at about 140o to 1 500 "C. Although it will generally be preferable to use them pure, they can also be used to advantage for some purposes. Give additions, e.g. B. to lower the sintering temperature. The bodies sinter completely vacuum-tight and have an excellent temperature change: el resistance. Fusing them with soft glass does not cause any difficulties because of the favorable expansion coefficient; Likewise, a connection with metals such as copper wire, chrome iron, chrome-nickel, iron-nickel, platinum, etc., is easy to establish. This can be used for sealing. enamel or soft glass can be used. The metal: & can also be attached by spraying or sintering.

Die gute Verschmelzbarkeit der keramischen Körper mit Glas macht sie zur Verwendung in elektrischen Vakuumgefäßen besonders ge-,eignet. Beispielsweise ist es möglich, bei Glühlampen und ,elektrischen Entladungsgefäßen zum Abschließen eine solche keramische Platte zu verwenden, die den bisherigen Fuß und den Sockel ersetzt. Neben einer Vereinfachung und Verkleinerung des Aufbaus tritt dabei eine Ersparnis an Messing und damit an dem zur Herstellung von Messing benötigten, aus dem Auslande einzuführenden Kupfer ein. Es ist auch möglich, die ganzen elektrischen Entladungsgefäße aus den dielektrisch verlustarmen keramischen Körpern herzustellen oder die Elektroden mit ihnen abzustützen.The good fusibility of the ceramic body with glass makes it particularly suitable for use in electrical vacuum vessels. For example it is possible to lock incandescent lamps and electrical discharge vessels to use such a ceramic plate, which the previous foot and the base replaced. In addition to simplifying and reducing the structure, there is also a Savings on brass and thus on that for the production of Brass required copper to be imported from abroad. It is also possible that entire electrical discharge vessels made of the dielectrically low-loss ceramic Manufacture bodies or to support the electrodes with them.

Claims (1)

PATENTANSPRÜCHE: i. Die Verwendung eines kieselsäurefreien keramischen Gegenstandes aus Berylliumoxyd und den Oxyden von Titan oder von Zirkon oder von beiden als Anschmelzkörper zum Anschmelzen von Glas. a. Verwendung eines keramischen Körpers nach Anspruch i, dadurch gekennzeichnet, daß die Mengenverhältnisse entsprechend den Ortho- oder Metatitanaten oder -zirkonaten gewählt sind. Elektrisches Vakuumgefäf>, dadurch gekennzeichnet, daß Sockel und Fassung desselben aus einem nach Anspruch i oder z mit Glas verschmolzenen keramischen Körper bestehen. PATENT CLAIMS: i. The use of a silica-free ceramic object made of beryllium oxide and the oxides of titanium or of zirconium or of both as fusible bodies for fusing glass. a. Use of a ceramic body according to claim i, characterized in that the proportions are selected according to the ortho- or metatitanates or zirconates. Electrical vacuum vessel, characterized in that the base and socket thereof consist of a ceramic body fused with glass according to claim i or z.
DEP69750D 1934-07-26 1934-07-26 Ceramic body that can be fused with glass Expired DE719646C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP69750D DE719646C (en) 1934-07-26 1934-07-26 Ceramic body that can be fused with glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP69750D DE719646C (en) 1934-07-26 1934-07-26 Ceramic body that can be fused with glass

Publications (1)

Publication Number Publication Date
DE719646C true DE719646C (en) 1942-04-14

Family

ID=7391489

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP69750D Expired DE719646C (en) 1934-07-26 1934-07-26 Ceramic body that can be fused with glass

Country Status (1)

Country Link
DE (1) DE719646C (en)

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