Siemens Aktiengesellschaft

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Other

Kaiser, Ria

Lange, Hans Juergen

Graßl, Gregor

Baalmann, Alfred

Alfred Baalmann

Klaus Dieter Vissing

Johannes Liebermann

Uwe Hartmann

Peter Gröppel

Christian Buske

Dirk Salz

Klaus-Dieter Vissing

Hartmut Hufenbach

Peter F&ouml;rnsel

Michael Schreyer

Gabriele Neese

Otto-Diedrich Hennemann

Guido Ellinghorst

Peter Donner

Jörg Ihde

Henning Stuke

Ria Kaiser

Gregor Graßl

Wolfgang Semrau

Peter Stauga

Hans Juergen Lange

A method for coating surfaces, for which a precursor material is caused to react with the help of plasma and the reaction product is deposited on a surface, the reaction as well as the deposition taking place at atmospheric pressure, such that a plasma jet is generated by passing a working gas through an excitation zone and the precursor material is supplied with a lance separately from the working gas to the plasma jet.

Method and device for plasma coating surfaces

An insulator with a molding made of ceramic and a hydrophobic coating applied to the surface of the molding is disclosed, the hydrophobic coating comprising a plasma polymer having been applied directly to the ceramic. The previously customary glaze on the surface of the ceramic is replaced by the plasma polymer. Such an insulator has high long-term stability with regard to its electrical insulating capability. It is possible to dispense with complicated shaping of the molding to increase the leakage path over the surface of the ceramic and with the application of a glaze, which means a considerable cost saving.

Insulator having a porcelain body and a hydrophobic coating

The invention relates to a metal substrate with a corrosion-resistant coating produced by means of plasma polymerization, wherein the substrate is subjected to mechanical, chemical and/or electrochemical smoothing in a pre-treatment step and is subsequently exposed to a plasma at a temperature of less than 200&deg; C. and at a pressure of 10 bis 100 mbars, whereby in a first step the surface is activated in a reducing plasma and in a second step the polymer is separated from a plasma containing at least one hydrocarbon or silico-organic compound which can be vaporized in plasma conditions, optionally contains oxygen, nitrogen or sulphur and can contain fluorine.

Metal substrate with a corrosion-resistant coating produced by means of plasma polymerization

An electrical insulator is produced by coating a molded part of the insulator with a hydrophobic plasma-polymer coating. The plasma-polymer coating is produced by igniting a plasma in a non-polar working gas or a working gas having non-polar groups at a working pressure of between 0.001 Pa (1&middot;10 mbar) and 50 Pa (5&middot;10 mbar). The electrical power input per chamber volume lies between 0.5 and 5 kW/m , the gas flow per chamber volume lies between 10 and 1000 sccm/m . A durable, hard and hydrophobic plasma-polymer coating is created, the quality of which is independent of the material of the molded part.

Method for producing an electrical insulator

The invention relates to a method for corrosion-resistant coating of metal substrates by means of plasma polymerization, wherein the substrate is subjected to mechanical, chemical and/or electrochemical smoothing in a pre-treatment step and is subsequently exposed to a plasma at a temperature of less than 200&deg; C. and at a pressure of 10&minus;,bis 100 mbars, whereby in a first step the surface is activated in a reducing plasma and in a second step the polymer is separated from a plasma containing at least one hydrocarbon or silico-organic compound which can be vaporized in plasma conditions, optionally contains oxygen, nitrogen or sulphur and can contain fluorine.

Method for corrosion-resistant coating of metal substrates by means of plasma polymerization

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Osterholz-Scharmbeck, Germany

Alfred Baalmann