Part made of silicon-based ceramic or cmc and method for producing such a part
AssigneeSafran
InventorsAmar SABOUNDJI, Hugues Denis JOUBERT, Philippe PICOT, Luc Patrice BIANCHI
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Abstract
The invention relates to a part made of silicon-based ceramic material or silicon-based ceramic matrix composite (CMC) material comprising an environmental barrier coating (EBC), said coating (12, 13) comprising a bonding layer (12) deposited on the surface of the ceramic material or ceramic matrix composite (CMC), said bonding layer (12) being topped by one or more layers together forming a multifunctional barrier structure (13), characterised in that the bonding layer (12) has at its interface with the multifunctional structure a polycrystalline silica layer (12) or sub-layer (12b).
Claims11
A part made of silicon-based ceramic material or silicon-based ceramic matrix composite material comprising an environmental barrier coating, the environmental barrier coating comprising a bonding layer deposited on a surface of the silicon-based ceramic material or the ceramic matrix composite material, the bonding layer being topped by one or more layers together forming a multifunctional barrier structure,
- wherein the bonding layer has a polycrystalline silica layer or sub-layer at an interface with the multifunctional barrier structure.
Dependencies are inferred from the claim text.