DE2006814C3 - Process for the production of homogeneous, color-stable selenium-red and selenium-cadmium-red matt glazes for ceramic purposes - Google Patents
Process for the production of homogeneous, color-stable selenium-red and selenium-cadmium-red matt glazes for ceramic purposesInfo
- Publication number
- DE2006814C3 DE2006814C3 DE19702006814 DE2006814A DE2006814C3 DE 2006814 C3 DE2006814 C3 DE 2006814C3 DE 19702006814 DE19702006814 DE 19702006814 DE 2006814 A DE2006814 A DE 2006814A DE 2006814 C3 DE2006814 C3 DE 2006814C3
- Authority
- DE
- Germany
- Prior art keywords
- red
- selenium
- glazes
- cadmium
- color
- 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
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- 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
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5022—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with vitreous materials
-
- 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
- C03C14/00—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix
- C03C14/006—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix the non-glass component being in the form of microcrystallites, e.g. of optically or electrically active material
-
- 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
- C03C4/00—Compositions for glass with special properties
- C03C4/02—Compositions for glass with special properties for coloured glass
-
- 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
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/14—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Glass Compositions (AREA)
Description
Mattglasuren unterscheiden sich von transparenten, glänzenden Glasuren bekanntlich dadurch, daß sie eine Menge kleiner Kristalle in eine glasige Grundmasse eingebettet enthalten. Sie werden gebildet, indem eine völlig geschmolzene Glasur bei der Abkühlung teilweise kristallisiert Mattglasciren entstehen auch dann, wenn überschüssiges Aluminiumoxid bzw. ungeschmolzene Komponenten in der Glasur eingelagert bleiben. Die Kristalle müssen so klein und regelmäßig verteilt sein, daß die Oberfläche der Glasur sich noch glatt und samtartig anfühlt Eine praktische Prüfung der Güte einer Glasur besteht darin, daß man auf eine Mattglasur mit einem normalen Bleistift schreibt, worauf man bei guten Glasuren das Geschriebene mit dem Finger wieder völlig abwischen kann.As is well known, matt glazes differ from transparent, glossy glazes in that they have a Contains a lot of small crystals embedded in a glassy matrix. They are formed by a completely melted glaze on cooling partially crystallizes matt glass glazes also arise when Excess aluminum oxide or unmelted components remain embedded in the glaze. the Crystals must be so small and regularly distributed that the surface of the glaze is still smooth and velvety to the touch A practical test of the quality of a glaze consists of looking at a matt glaze with a normal pencil writes on what to look at good glazes can completely wipe off what has been written with a finger.
Es isi bereits bekannt, daß man basische Mattglasuren durch Hinzufügen von großen Mengen der Oxide von Zink, Barium, Calcium, Magnesium, Lithium und gegebenenfalls Farboxiden herstellen kann. Diese Mattierungsmittel könnte man theoretisch auch für die Herstellung matter selenroter und selen-cadmiumroter Glasuren verwenden, doch hat die Praxis gezeigt, daß in diesem Fall die rötlichen Farbtöne der Glasuren verschwinden, was natürlich äußerst unerwünscht und nachteilig istIt is already known that basic matt glazes are used by adding large amounts of the oxides of zinc, barium, calcium, magnesium, and lithium can optionally produce color oxides. These matting agents could theoretically also be used for the Use in the manufacture of matt selenium red and selenium-cadmium red glazes, but practice has shown that in In this case the reddish hues of the glazes disappear, which is of course extremely undesirable and is disadvantageous
Es ist weiterhin bekannt, durch Hinzufügen von Bariumcarbonat oder Bariumsulfat Mattglasuren herzustellen, doch sind hierbei höhere Temperaturen von mehr als 1120"C erforderlich, was gerade bei keramischen Glasuren zu Schwierigkeiten führen kann, zumal im Tunnelofen im allgemeinen Temperaturen unter UOO0C bevorzugt werden.It is also known to prepare by adding barium carbonate or barium sulfate Matt glazes, but higher temperatures of more than 1120 "C are needed in which can lead especially in ceramic glazes to difficulties, especially in the tunnel kiln generally temperatures below UOO 0 C are preferred.
Schließlich hat man auch schon für farbige Glasuren Aluminiumoxid als Mattierungsmittel verwendet Für selenrote und selen-cadmiumrote Glasuren kann Aluminiumoxid iber ebenso wie die anderen obengenannten Metalloxide nicht zum Einsatz kommen, da auch hier Farbverfälschungen der Glasuren unvermeidlich sind, indem die roten Farbtöne der Glasuren ungünstig beeinflußt und ihre Farbkraft erheblich herabgesetzt wird.After all, aluminum oxide has also been used as a matting agent for colored glazes Selenium red and selenium-cadmium red glazes can use aluminum oxide Like the other metal oxides mentioned above, they are not used here either Color falsifications of the glazes are inevitable because the red hues of the glazes are unfavorable influenced and their color strength is significantly reduced.
Der vorliegenden Erfindung lag nun die Aufgabe zugrunde, selenrote und selen-cadmiumrote Mattglasuren für keramische Zwecke zu entwickeln, die die Nachteile der bisherigen Glasuren nicht besitzen und trotz des Zusatzes von Mattierungsmittel homogen und farbstabil sind und nach dem Brennen ein mattes, samtartiges Aussehen besitzen und nicht entglast sind.The present invention was based on the object, selenium-red and selenium-cadmium-red matt glazes for ceramic purposes that do not have the disadvantages of previous glazes and are homogeneous and color stable despite the addition of matting agents and after firing a matt, have a velvety appearance and are not devitrified.
Die überraschende Lösung dieser Aufgabe ist ein Verfahren zur Herstellung von homogenen, farbstabilen selenroten und selen-cadmiumroten Mattglasuren für keramische Zwecke unter Verwendung von Mattierungsmitteln, bei dem man die in beliebiger Weise auf die keramischen Unterlagen aufgebrachten Glasuren bei den üblichen Temperaturen brennt, das dadurch gekennzeichnet ist, daß man den an sich bekannten selenroten und selen-cadmiumroten Glasuren Bariumcarbonat in Mengen von 15 bis 25 Gew.-% und gemahlenen Korund in Mengen von 10 bis 25 Gew.-% zumischtThe surprising solution to this problem is a process for the production of homogeneous, color-stable selenium red and selenium-cadmium red matt glazes for ceramic purposes using matting agents, in which you can apply the glazes in any way to the ceramic substrates burns at the usual temperatures, which is characterized in that one is known per se selenium-red and selenium-cadmium-red glazes and barium carbonate in amounts of 15 to 25% by weight and ground corundum mixed in amounts of 10 to 25 wt .-%
Es war in Kenntnis des Standes der Technik nicht vorauszusehen, daß gerade durch die Kombination von
Bariumcarbonat mit Korund die Lösung der der Erfindung zugrunde liegenden Aufgabe möglich sein
würde, zumal der Fachmann wußte, daß die themische Dissoziation des Bariumcarbonats von allen Erdalkalicarbonaten
am schwierigsten vonstatten geht und daß darüber hinaus bariumcarbonathaltige Massen infolge
der Kohlendioxidentwicklung zum starken Schäumen neigen. Insbesondere war nicht vorauszusehen, daß es
bei Verwendung der Kombination von Bariumcarbonat mit Korund gelingen würde, homogene und vor allem
auch farbstabile selenrote und selen-cadmiumrote Mattglasuren herstellen zu können, mit denen einwandfreie
Rottöne der Glasuren auf den keramischen Scherben erzielt werdea
Der Vorteil der Zugabe von Bariumcarbonat und gemahlenem Korund besteht nicht zuletzt darin, daß der
Oberfläche der Glasur, die glatt und weder schaumig noch entglast ist, ein samtartiges homogenes Aussehen
verliehen wird.Knowing the state of the art, it could not be foreseen that the combination of barium carbonate with corundum would make it possible to solve the problem on which the invention is based, especially since the person skilled in the art knew that the thermal dissociation of barium carbonate from all alkaline earth carbonates is the most difficult and that, in addition, masses containing barium carbonate tend to foam strongly as a result of the evolution of carbon dioxide. In particular, it was not foreseeable that if the combination of barium carbonate with corundum was used, it would be possible to produce homogeneous and, above all, color-stable selenium-red and selenium-cadmium-red matt glazes, with which perfect red tones of the glazes on the ceramic body can be achievedea
The advantage of adding barium carbonate and ground corundum is not least that the surface of the glaze, which is smooth and neither foamy nor devitrified, is given a velvety, homogeneous appearance.
Zum Aufbringen einer selenroten und selen-cadmiumroten Mattglasur auf keramische Scherben wurde als Mattierungsmittel ein Gemisch aus 66,7% Bariumcarbonat und 333% Korund verwendet Die Mattglasur bestand aus 70% eines Gemisches gleicher Teile einer Selenrotglasur glänzend und einer Cadmiumgelbglasur glänzend und 30% des genannten Mattierungsmittels.For applying a selenium red and selenium-cadmium red A mixture of 66.7% barium carbonate was used as a matting agent for the matt glaze on ceramic bodies and 333% corundum used The matt glaze consisted of 70% of a mixture of equal parts of a selenium red glaze glossy and a cadmium yellow glaze glossy and 30% of said matting agent.
Um die verschiedenen Farbnuancen zu erhalten, d. h. von rot bis orange, sind zwei Möglichkeiten gegeben.To get the different shades of color, i. H. from red to orange, there are two options.
Man mischt 45% Selenrotglasur, 25% Cadmiumgelbglasur und 30% Mattierungsmittel. Diese Glasur wird bei einer Brenntemperatur vonMix 45% selenium red glaze, 25% cadmium yellow glaze and 30% matting agent. This glaze will at a firing temperature of
880 bis 940° C = orange
960 bis 1020° C = feuerrot
1040 bis 1080° C = dunkelrot880 to 940 ° C = orange
960 to 1020 ° C = fire red
1040 to 1080 ° C = dark red
gebranntburned
bestimmten Brenntemperatur, z. B. von 1050° C, dascertain firing temperature, e.g. B. of 1050 ° C, the
zusammengesetzt sind:are composed of:
μ Selenrotglasur glänzend 70%
Mattierungsmittel 30%μ Selenium red glaze glossy 70%
Matting agent 30%
Cadmiumgelbglasur glänzend 70%
μ Mattierungsmittel 30%Cadmium yellow glaze glossy 70%
μ matting agent 30%
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702006814 DE2006814C3 (en) | 1970-02-14 | 1970-02-14 | Process for the production of homogeneous, color-stable selenium-red and selenium-cadmium-red matt glazes for ceramic purposes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702006814 DE2006814C3 (en) | 1970-02-14 | 1970-02-14 | Process for the production of homogeneous, color-stable selenium-red and selenium-cadmium-red matt glazes for ceramic purposes |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2006814A1 DE2006814A1 (en) | 1971-09-09 |
DE2006814B2 DE2006814B2 (en) | 1972-05-18 |
DE2006814C3 true DE2006814C3 (en) | 1980-04-24 |
Family
ID=5762291
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19702006814 Expired DE2006814C3 (en) | 1970-02-14 | 1970-02-14 | Process for the production of homogeneous, color-stable selenium-red and selenium-cadmium-red matt glazes for ceramic purposes |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2006814C3 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015103461B4 (en) * | 2015-03-10 | 2018-08-02 | Schott Ag | Method for producing a glass or glass ceramic article with a colored glass-based coating, coated glass or glass ceramic article and its use |
CN112573827A (en) * | 2020-12-15 | 2021-03-30 | 佛山市华意陶瓷颜料有限公司 | Low-temperature cadmium-selenium red glaze powder and preparation method and application thereof |
-
1970
- 1970-02-14 DE DE19702006814 patent/DE2006814C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2006814A1 (en) | 1971-09-09 |
DE2006814B2 (en) | 1972-05-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) | ||
8339 | Ceased/non-payment of the annual fee |