DE900489C - Surface layer for glasses u. like - Google Patents
Surface layer for glasses u. likeInfo
- Publication number
- DE900489C DE900489C DEO675D DEO0000675D DE900489C DE 900489 C DE900489 C DE 900489C DE O675 D DEO675 D DE O675D DE O0000675 D DEO0000675 D DE O0000675D DE 900489 C DE900489 C DE 900489C
- Authority
- DE
- Germany
- Prior art keywords
- glasses
- surface layer
- layers
- cerium
- plastics
- 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
- 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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
- C03C17/23—Oxides
- C03C17/27—Oxides by oxidation of a coating previously applied
-
- 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
- C03C2217/00—Coatings on glass
- C03C2217/20—Materials for coating a single layer on glass
- C03C2217/21—Oxides
- C03C2217/228—Other specific oxides
-
- 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
- C03C2218/00—Methods for coating glass
- C03C2218/30—Aspects of methods for coating glass not covered above
- C03C2218/32—After-treatment
- C03C2218/322—Oxidation
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Surface Treatment Of Optical Elements (AREA)
- Surface Treatment Of Glass (AREA)
Description
Oberflächenschicht für Gläser u. dgl. Die Erfindung betrifft eine Oberflächenschicht für optische und andere Gläser, Kunststoffe u. dgl., die einen höheren Brechungsindex aufweist als die Gläser u. dgl. und insbesondere als Belag für lichtdurchlässige Spiegel geeignet .ist.Surface layer for glasses and the like Surface layer for optical and other glasses, plastics and the like Has a higher refractive index than the glasses and the like, and in particular as a coating is suitable for translucent mirrors.
Bekannte, aus Rhodium, Aluminium, Silber, Bleisulfid hergestellte Spiegel und Schichten aus einem Metalloxyd, z. B. Chromoxyd, weisen vor allem den Nachteil auf, daß sie einen. verhältnismäßig großen Teil des auffallenden Lichtes absorbieren (bei Lichthalbierung ungefähr 3o bis 401/o. Absorption).Well-known, made from rhodium, aluminum, silver, lead sulfide Mirror and layers of a metal oxide, e.g. B. chromium oxide, have above all the Disadvantage on that they have a. relatively large part of the incident light absorb (with light halving about 3o to 401 / o. absorption).
Andere bekannte Stoffe, z. B. Antimonsulfid, und Zinksulfid, haben, wenn sie als Spiegelbelag verwendet werden, zwar geringe Absorption, aber auch geringe Beständigkeit gegenüber mechanischen bzw. chemischen Einwirkungen. Frei von ,diesen Nachteilen isti :die neue Oberflächenschicht, die gemäß der Erfindung aus Ceroxyd @besteht. Es hat sich überraschenderweise gezeigt, daß dieser Stoff bei den in Betracht kommenden: Dicken, nicht nur praktisch keine Ab- sorption, sondern auch große Widerstandsfähigkeit gegen mechanische und chemische Einflüsse aufweist. .So wurde bei einer aus Ceroxyd bestehenden, auf eine Seite einer Glasplatte aufgebrachten Oberflächenschicht eine Durchlässigkeit von un, gefähr 7o °/o, eine Reflexion von etwa 30% gemessen. Die Wischfestgkeit einer solchen Schicht und ihre Beständigkeit gegen; Säuren, Alkalien usw. sind sehr groß, wogegen beispielsweise Schichten aus Antimonsulfid schon nach wenige Minuten währendem Eintauchen in, kaltes Wasser zum Abblättern gebracht wurden. Zü bemerken ist noch, daß Spiegel mit Ceraxydschichten hergestellt werden 'können, die sowohl in der Durchsicht als auch in der Reflexion keinen; Farbstich aufweisen, wogegen - Spiegel aus Antimonsulfid in der Durchsicht stets einen Gelb stich zeigen. Die Heristellung einer Oberflächenschicht auf Glas, Kunststoffen u. dgl. kann: gemäß der Erfindung durch Aufbringen von Cer und anschließ-endes Oxydieren, gegebenenfalls bei höherer Zemperatur erfolgen. Ceroxyd selbst aufzubringen ist, z. B. beim Aufdampfen im Hochvakuum, ungünstig wegen seines hohen Schmelzpunktes.Other known substances, e.g. B. antimony sulfide, and zinc sulfide, if they are used as a mirror coating, although low absorption, but also low resistance to mechanical or chemical effects. The new surface layer, which according to the invention consists of cerium oxide, is free from these disadvantages. It has surprisingly been found that this substance in the coming considered: not only absorption thicknesses virtually no waste, but also high resistance to mechanical and chemical influences has. Thus, for a surface layer made of cerium oxide and applied to one side of a glass plate, a transmittance of about 70%, a reflection of about 30% was measured. The smudge resistance of such a layer and its resistance to; Acids, alkalis, etc. are very large, whereas layers of antimony sulfide, for example, were made to peel off after just a few minutes of immersion in cold water. It should also be noted that mirrors can be produced with cerium oxide layers which do not show either in transmission or in reflection; Have a color cast, whereas - mirrors made of antimony sulfide always show a yellow cast when viewed through. A surface layer can be produced on glass, plastics and the like: according to the invention, by applying cerium and then oxidizing it, if necessary at a higher temperature. Ceroxide is to be applied by itself, e.g. B. during vapor deposition in a high vacuum, unfavorable because of its high melting point.
Besonders vorteilhaft ist es, die Oxydation von Cer bereits während des Aufbringens. durchzuführen, da auf diese Weise für das Aufbringen: der Schicht nur ein einziger Arbeitsgang erfbriderlich ist.It is particularly advantageous to prevent cerium from being oxidized of application. perform as this way for applying: the layer only one work step is necessary.
Insbesondere beim Aufbringen der Oberflächenschicht im Hochvakuum empfiehlt es sich, die Gläser u. dgl. vor der Belegung der Einwirkung einer elektrischen Glimmentladung (Elektronen-oder Innenbombardement) auszusetzen.Especially when applying the surface layer in a high vacuum It is recommended that the glasses and the like before the exposure to an electrical Suspend glow discharge (electron or internal bombardment).
Die Oberflächenschicht kam zwecks Erzielung von Reflexionsverminderung mit mindestens. einer weiteren Schicht vereinigt sein, wobei die Brechungsindizes der Schichten voneinander verschieden: sind.The surface layer came for the purpose of reducing reflection with at least. be combined in another layer, the refractive indices of layers different from one another: are.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEO675D DE900489C (en) | 1944-07-01 | 1944-07-01 | Surface layer for glasses u. like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEO675D DE900489C (en) | 1944-07-01 | 1944-07-01 | Surface layer for glasses u. like |
Publications (1)
Publication Number | Publication Date |
---|---|
DE900489C true DE900489C (en) | 1953-12-28 |
Family
ID=7349284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEO675D Expired DE900489C (en) | 1944-07-01 | 1944-07-01 | Surface layer for glasses u. like |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE900489C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1013089B (en) * | 1953-12-09 | 1957-08-01 | Zeiss Jena Veb Carl | Translucent mirror |
DE1087828B (en) * | 1956-04-07 | 1960-08-25 | Freiberger Praez Smechanik Veb | Neutral gray light filter |
DE1228489B (en) * | 1958-10-30 | 1966-11-10 | Balzers Vakuum G M B H | Process for the production of thin, in the visible wavelength range practically absorption-free oxide layers for optical purposes by vapor deposition in a vacuum |
-
1944
- 1944-07-01 DE DEO675D patent/DE900489C/en not_active Expired
Non-Patent Citations (1)
Title |
---|
None * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1013089B (en) * | 1953-12-09 | 1957-08-01 | Zeiss Jena Veb Carl | Translucent mirror |
DE1087828B (en) * | 1956-04-07 | 1960-08-25 | Freiberger Praez Smechanik Veb | Neutral gray light filter |
DE1228489B (en) * | 1958-10-30 | 1966-11-10 | Balzers Vakuum G M B H | Process for the production of thin, in the visible wavelength range practically absorption-free oxide layers for optical purposes by vapor deposition in a vacuum |
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