Refractory metal composite coated article
AssigneeBarson Corporation
InventorSeymour Priceman
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Abstract
The coated article includes a refractory metal substrate having an oxidation resistant intermetallic layer formed in situ thereon; e.g., a fused refractory metal silicide layer, and a ceramic layer applied on and adhering to the intermetallic layer to provide enhanced high temperature properties and improved resistance to premature catastrophic failure in high temperature oxidizing environments where dissimilar materials are present that may destructively react with the inermetallic layer.
Claims6
In an engine using a gas flow past an upstream engine component toward a downstream engine component operating at elevated temperature, the combination of said downstream component comprising a substrate of a refractory metal, an oxidation resistant intermetallic layer on the substrate and a ceramic layer adhering to the intermetallic layer, said upstream component comprising a material potentially destructively reactive with said intermetallic layer so as to degrade same when in contact therewith at elevated temperature, said ceramic layer providing a barrier between said intermetallic layer and said material in the event said material comes in contact with said downstream component so as to prevent degradation of said intermetallic layer.
Dependencies are inferred from the claim text.