DE897077C - Glaze with high acid resistance - Google Patents

Glaze with high acid resistance

Info

Publication number
DE897077C
DE897077C DES5026D DES0005026D DE897077C DE 897077 C DE897077 C DE 897077C DE S5026 D DES5026 D DE S5026D DE S0005026 D DES0005026 D DE S0005026D DE 897077 C DE897077 C DE 897077C
Authority
DE
Germany
Prior art keywords
glaze
acid resistance
metal
high acid
acid
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
DES5026D
Other languages
German (de)
Inventor
Wilhelm R Dr-Ing Buessem
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DES5026D priority Critical patent/DE897077C/en
Priority claimed from US467813A external-priority patent/US2408468A/en
Application granted granted Critical
Publication of DE897077C publication Critical patent/DE897077C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
    • C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Glass Compositions (AREA)

Description

Glasur mit hoher Säurebeständigkeit Zur Herstellung von Metall-Keramik-Verbindungen sind Glasuren erforderlich, die einen niedrigen Schmelzpunkt besitzen und bezüglich ihres Ausdehnungskoeffizienten gut zur Keramik passen. Einen niedrigen Schmelzpunkt besitzen Glasuren, die im wesentlichen aus Bleiboraten bestehen. Beim Einbrennen derartiger Glasuren muß jedoch die Brennatmosphäre oxydierend gehalten werden, damit das Bleioxyd nicht zu metallischem Blei reduziert wird. Hierbei verzundert das Metall, so daß es nötig ist, die Metallteile anschließend in Säure zu entrosten, um sie weiterverarbeiten zu können. Es bat sich nun gezeigt, daß die niederschmelzenden Bleiborate die Behandlung in Säure nicht aushalten, sondern sich auflösen.Glaze with high acid resistance For the production of metal-ceramic bonds glazes are required which have a low melting point and with respect to their coefficient of expansion fit well with the ceramic. A low melting point have glazes that essentially consist of lead borates. When burning in such glazes, however, the firing atmosphere must be kept oxidizing so the lead oxide is not reduced to metallic lead. Here the metal scales, so that it is necessary to derust the metal parts in acid in order to remove them to be able to further process. It has now been shown that the melting point Lead borate cannot withstand treatment in acid, but dissolve.

Es sind .an sich Schmelzflüsse für säurebeständige Schmelzfarben bekannt, die im wesentlichen dem System Kieselsäure-Bleioxyd-Borsäure angehören und die zur Erlangung einer gewissen Säurebeständigkeit Eisenoxyd aufweisen. Derartige Schmelzflüsse sind jedoch für die Herstellung von-Metall-Keramik-Verbindungen nicht geeignet.Melt flows for acid-resistant enamel colors are known per se, which essentially belong to the system silica-lead oxide-boric acid and which belong to the Obtaining a certain acid resistance have iron oxide. Such melt flows however, they are not suitable for the production of metal-ceramic connections.

Gemäß der vorliegenden Erfindung wird nun eine Glasur mit hoher Säurebeständigkeit zur Herstellung von Metall-Keramik-Verbindungen geschaffen, die im wesentlichen dem System Kieselsäure -Bl.eioxyd-Borsäure angehört und durch eine Zusammensetzung gekennzeichnet ist, deren darstellender Punkt im Dreistoffsystem innerhalb des .durch die Punkte 75 0/0 Pb 0, 25 0/0 S'021 30 0/0 Pb 0, 70 0/0 S'021 30 % Pb O, 45 0/a S' 02, 25 % B2 03 bestimmten Dreiecks liegt. Hierbei kann das Bleioxyd teilweise durch Alkali- oder Erdalkalioxyde, die Borsäure teilweise durch Tonerde und die Kieselsäure teilweise durch Titandioxyd ersetzt werden.According to the present invention, a glaze with high acid resistance for the production of metal-ceramic compounds is created, which essentially belongs to the system silica-metal oxide-boric acid and is characterized by a composition whose representative point in the ternary system is within the .by the points 75 0/0 Pb 0, 25 0/0 S'021 30 0/0 Pb 0, 70 0/0 S'021 30% Pb O, 45 0 / a S '02, 25% B2 03 specific triangle is . Some of the lead oxide can be replaced by alkali metal or alkaline earth metal oxides, some of the boric acid can be replaced by alumina and some of the silica can be replaced by titanium dioxide.

Claims (2)

PATENTANSPRÜCHE: die im wesentlichen dem System Kieselsäure-Bleioxyd-Borsäure angehört, gekennzeichnet .durch eine Zusammensetzung, deren darstellender Punkt im Dreistoffsystem innerhalb des durch die Punkte 75 % Pb O, 25 % S' 02, 30 % Pb O, 70 0/0- Si 02, 30 % Pb O, 45 0/a S' 02, 25'/0B203 bestimmten Dreiecks liegt. PATENT CLAIMS: essentially based on the silica-lead oxide-boric acid system belongs, characterized .by a composition, its representative point in the three-substance system within the area indicated by the points 75% Pb O, 25% S '02, 30% Pb O, 70 0 / 0- Si 02, 30% Pb O, 45 0 / a S '02, 25' / 0B203 certain triangle. 2. Glasur nach Anspruch i, dadurch gekennzeichnet, daß das Bleioxyd teilweise. durch Alkali- oder Erdalkalioxyde, die Borsäure teilweise durch Tonerde und die Kieselsäure teilweise durch Titandioxyd ersetzt ist. i. Glasur mit hoher Säurebeständigkeit zur Herstellung von Metall-Kkramik-Verbindungen, Angezogene Druckschriften: Deutsche Patentschriften Nr. 536 528, 540:245.2. Glaze according to claim i, characterized in that the lead oxide is partially. by Alkali or alkaline earth oxides, boric acid partly through alumina and silicic acid is partially replaced by titanium dioxide. i. Glaze with high acid resistance for the production of metal-ceramic connections, attracted publications: German Patent Nos. 536,528, 540: 245.
DES5026D 1942-12-03 1942-12-03 Glaze with high acid resistance Expired DE897077C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES5026D DE897077C (en) 1942-12-03 1942-12-03 Glaze with high acid resistance

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DES5026D DE897077C (en) 1942-12-03 1942-12-03 Glaze with high acid resistance
US467813A US2408468A (en) 1942-12-03 1942-12-03 Glass composition

Publications (1)

Publication Number Publication Date
DE897077C true DE897077C (en) 1953-11-16

Family

ID=25994747

Family Applications (1)

Application Number Title Priority Date Filing Date
DES5026D Expired DE897077C (en) 1942-12-03 1942-12-03 Glaze with high acid resistance

Country Status (1)

Country Link
DE (1) DE897077C (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE536528C (en) * 1928-07-08 1931-10-23 Degussa Acid-resistant enamel colors
DE540245C (en) * 1928-11-16 1931-12-08 Degussa Melt flows for acid-resistant melt colors

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE536528C (en) * 1928-07-08 1931-10-23 Degussa Acid-resistant enamel colors
DE540245C (en) * 1928-11-16 1931-12-08 Degussa Melt flows for acid-resistant melt colors

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