Method for making a rhenium rocket nozzle

Details Method for making a rhenium rocket nozzle Method for making a rhenium rocket nozzle

1996-06-06

1999-02-23

Breneman, R. Bruce

Etching a substrate: processes

Nongaseous phase etching of substrate

Etching inorganic substrate

2989001, 428628, B23P 1500, B44C 122

Patent

active

058740155

ABSTRACT:
A method for making an article from rhenium and in particular a rocket nozzle. First a molybdenum mandrel is formed with a portion having the desired shape of the nozzle. A layer of rhenium is deposited over the nozzle portion, and then rhenium wire is wrapped around this rhenium layer. A second rhenium layer or a layer of ruthenium is then deposited over the layer of rhenium wire. Alternating layers of rhenium wire and deposited rhenium or ruthenium are applied until a desired thickness is obtained. A layer of molybdenum is applied to can the assembly and the assembly is subject to hot isostatic pressing. Finally, the molybdenum is etched away leaving the rhenium nozzle.

REFERENCES:
patent: 4917968 (1990-04-01), Tuffias et al.
patent: 5473817 (1995-12-01), Schnoor et al.
patent: 5613299 (1997-03-01), Ring et al.

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