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US 5,705,283 AGranted
Tungsten-copper composite material with rhenium protective layer, and its preparation
AssigneeHughes Electronics Corporation
InventorKamleshwar Upadhya
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AssigneeHughes Electronics Corporation
InventorKamleshwar Upadhya
Estimating the term…
A rocket engine component is formed as a tungsten-copper composite substrate, and a functionally-gradient material coating overlying and contacting the substrate. The functionally-gradient material coating has a composition that varies nonlinearly through a thickness of the coating so as to minimize thermal stresses through the coating, and such that the functionally-gradient material coating is tungsten adjacent to the substrate and is rhenium remote from the substrate. In a preferred form, the functionally-gradient material coating includes a tungsten sublayer overlying and contacting the substrate, a tungsten-rhenium sublayer overlying and contacting the tungsten sublayer; and a rhenium sublayer overlying and contacting the tungsten-rhenium sublayer. The functionally-gradient material coating is preferably applied by a low-temperature deposition technique such as plasma enhanced chemical vapor deposition.
An article of manufacture, comprising:
An article of manufacture, comprising:
A method for preparing an article of manufacture, comprising:
An article of manufacture, comprising:
Dependencies are inferred from the claim text.