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US 10,865,481 B2Granted
Coatings for turbine parts
AssigneeGeneral Electric Technology GmbH
InventorsThomas Widmer, Sven Olliges, Alexander Stankowski, Piero-Daniele Grasso, Mauro Melas, Thomas Baumann
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Abstract
A method and a turbine part having a coating with a matrix layer that includes a high temperature resistant hydrophobic polysiloxane filler, wherein the coating has superior mechanical strength and temperature resistance.
Claims18
A method for coating a part for an axially rotating machine with an erosion resilient coating, the method comprising:
- providing a part of an axially rotating machine;
- coating the part with a coating comprising a metal matrix having an embedded polysiloxane filler distributed throughout a thickness of the metal matrix;
- and
- stoving the part with the coating employing a controlled process to tailor at least one of a temperature resistance and hydrophobic property of the polysiloxane filler, the controlled process employing a temperature that varies and is selected based at least in part on a required end use of the coating, a specific composition and form of the polysiloxane filler, and a presence of any catalytic substances;
- wherein the controlled process employs a temperature selected such that controlled partial pyrolysis results in successive replacement of carbon containing end groups with oxygen to form SiO2, yielding an increase in the ceramic (SiO2) to organic ratio of the polysiloxane filler to affect temperature resistance and hydrophobicity.
2 more elements
A method for coating a part for an axially rotating machine with an erosion resilient coating, the method comprising:
- providing a part of an axially rotating machine;
- coating the part with a coating comprising a metal matrix having an embedded polysiloxane filler distributed throughout a thickness of the metal matrix;
- and
- stoving the part with the coating employing a controlled process to tailor a temperature resistance and hydrophobic property of the polysiloxane filler, the controlled process employing a temperature that varies and is selected based at least in part on a required end use of the coating, a specific composition and form of the polysiloxane filler, and a presence of any catalytic substances;
- wherein the controlled process employs a temperature selected such that controlled partial pyrolysis results in successive replacement of carbon containing end groups with oxygen to form SiO2, yielding an increase in the ceramic (SiO2) to organic ratio of the polysiloxane filler to affect temperature resistance and hydrophobicity.
2 more elements
Dependencies are inferred from the claim text.