Spray powder for manufacturing by thermal spraying of a thermal barrier coating being stable at high temperatures

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 multilayered...

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Bibliographische Detailangaben
Hauptverfasser: R.J. DAMANI, K. HONEGGER
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung: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 multilayered 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 (1) which respectively have an agglomerate-like micro-structure (2) which is formed by a plurality of granules (3) 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 (4) or a plurality of additives. This further component is distributed finely dispersed on the surfaces (30) of the functional material gra