Title: Metal-refractory composite material

Abstract: A refractory composite material usable in making gas-turbine blades for aviation applications. The composite material comprises a nickel-based superalloy matrix containing cobalt, aluminum in the form of a Ni.sub.3 Al precipitate, and tungsten, and a reinforcing phase of oriented monocrystalline niobium carbide fibers formed in situ during production, by unidirectional solidification. The composition of the composite material by weight expressed in percent is: Co -- 20-30% Cr -- 6-15% W -- 7-10% Al -- 3-6% Nb -- 4-6% C -- 0.4-0.65% Ni balance to 100.

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Inventors: Bibring, Herve (Meudon, FR)
Trottier, Jean-Pierre (Bagneux, FR)
Khan, Tasadduq (Plessis-Robinson, FR)
Rabinovitch, Maurice (Chatillon, FR)
Stohr, Jean-Francois (Bourg-la-Reine, FR)

Application Number: 608346
Filing Date: 1975-08-27
Publication_date: 1977-08-23
Assignee: O.N.E.R.A. - Office National d'Etudes et de Recherches Aerospatiales (Chatillon, FR)
Primary Class(es): 148/404 148/428, 420/445, 420/448, 428/608
Other Classes:
US Patent Ref:

3677835	Jul, 1972	Tien et al.	75/171.
3799769	Mar, 1974	Tarshis et al.	75/171.

Other Refs:
Primary Examiner: Dean, R.
Assistant Examiner:
Attorney: Ross; Karl F., Dubno; Herbert