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Sulzer Metco (us) Inc.

Oerlikon Metco Ag

Sulzer Metco Ag

Oerlikon Metco Ag, Wohlen

Rajiv J Damani

Malko Gindrat

Arno Refke

Kaspar Honegger

Jochen Häring

Jochen Haering

A plasma spray method for the manufacture of an ion conducting membrane, in particular of a hydrogen ion conducting membrane or of an oxygen ion conducting membrane. In the method, the membrane is deposited as a layer on a substrate in a process chamber, wherein a starting material is sprayed onto a surface of the substrate by means of a process gas in the form of a process beam. The starting material is injected into a plasma at a low process pressure which is at most 10000 Pa and is partially or completely melted there. In accordance with the invention, the substrate has pores which are connected amongst one another so that the substrate is gas permeable and a portion of an overall pore area of an overall area of the coating surface amounts to at least 30% or, in a particular embodiment, to at least 40%.

Plasma spray method for the manufacture of an ion conducting membrane and an ion conducting membrane

A plasma spray method for the manufacture of an ion conductive membrane is provided which ion conductive membrane has an ion conductivity, in which method the membrane is deposited as a layer () onto a substrate () in a process chamber, wherein a starting material (P) is sprayed onto a surface of the substrate () in the form of a process beam () by means of a process gas (G), wherein the starting material is injected into a plasma at a low process pressure, which is at most 10,000 Pa, and is partially or completely molten there. Oxygen (O) is supplied to the process chamber () during the spraying at a flow rate which amounts to at least 1%, preferably at least 2%, of the overall flow rate of the process gas.

Plasma spray method for the manufacture of an ion conductive membrane

A method for the coating of a substrate in which a starting material (P) is sprayed onto the substrate in the form of a process jet by means of plasma spraying, with the starting material (P) being injected into a plasma which defocuses the process jet and being melted partly or completely into a liquid phase there at a low process pressure which is at most 20,000 Pa, wherein a gas flow for the process jet is set such that the substrate is coated by deposition from the liquid phase in at least one region which is located in the geometric shadow with respect to the process jet.

Method for coating a substrate and substrate with a coating

The spray powder can be used for the manufacture of a thermally insulating layer which is resistant to high temperatures. A coating of this kind, a so-called TBC, can be produced on a substrate by means of a thermal spraying process. The substrate can already be coated with a single- or multi-layered part coating, in particular a primer. At least one thermally insulating functional material is used, which on the one hand has a lower thermal conductivity than the substrate and on the other hand forms a chemically and thermally stable phase at high temperatures. The spray powder comprises particles () which respectively have an agglomerate-like micro-structure () which is formed by a plurality of granules () adhering to each other. These granules are made up of the functional material or the functional materials. At least one further component is present made of an additive () or a plurality of additives. This further component is distributed finely dispersed on the surfaces () of the functional material granules (), i.e. primarily in the boundary zones. The further component in the given form or in a transformed form exerts a retarding or eliminating effect with regard to sintering compounds, which can form at high temperatures between the functional material granules.

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Winterthur, Switzerland

Rajiv J Damani