Keramische Beschichtungen mit Sintermitteln
Anmelder: RTX Corporation 🇺🇸
Details
- Veröffentlichungs-Nr.
- EP4711352
- Anmeldetag
- 12. September 2025
- Veröffentlichung
- 18. März 2026
- Rechtsraum
- EP
Abstract
A coated substrate is described for use as part of a jet engine component which includes a substrate and a coating system. The substrate can be a ceramic matrix composite or a superalloy substrate. The coating system is applied to the substrate by thermal spraying such as APS. The coating system includes a layer containing as hafnium silicate (hafnon), zirconium silicate (zircon), a rare earth phosphate (REPO<sub>4</sub>), rare earth oxides (RE<sub>2</sub>O<sub>3</sub>), alumina, an aluminosilicate, rare earth-stabilized zirconia, and HfO<sub>2</sub>-SiO<sub>2</sub>-rare earth (RE) oxide, hafnia (HfO<sub>2</sub>) stabilized (partially or fully) by the addition of another component, zirconia (ZrO<sub>2</sub>) coating stabilized (partially or fully) by the addition of another component, a rare earth zirconate (RE<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub>), a rare earth hafnate (RE<sub>2</sub>Hf<sub>2</sub>O<sub>7</sub>), and combinations thereof, wherein RE is Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, or Lu. To mitigate crack formation during amorphous-crystalline phase transformation, the layer further contains 0.1 to 10 wt.% of a metal oxide selected from Al<sub>2</sub>O<sub>3</sub>, SiO<sub>2</sub>, Nb<sub>2</sub>O<sub>3</sub>, MgO, CaO, SrO, BaO, and combinations thereof, as a sintering agent.
Anmelder
- Firma
- RTX Corporation
- Land
- 🇺🇸 USA
US-amerikanischer Luft- und Raumfahrt- sowie Verteidigungskonzern, entstanden aus Raytheon und United Technologies. Entwickelt und fertigt Triebwerke, Avionik, Radarsysteme, Raketen- und Verteidigungstechnik für zivile und militärische Kunden.
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