Nickel-alumina composites: In situ synthesis by a displacement reaction, and mechanical properties
- Cornell Univ., Ithaca, NY (United States)
Nickel-alumina composites have the potential to be high performance materials. Alumina, with its excellent oxidation resistance, combined with a ductile phase such as nickel may provide a tough material with a lower density and higher Young`s modulus, overall, a higher specific modulus than typical Superalloys. Dense, interpenetrating Ni-Al{sub 2}O{sub 3} composites were synthesized using a displacement reaction between NiO and aluminum. The resulting composites were characterized in terms of their mechanical properties such as hardness, flexure strength, fracture toughness and elastic constants. The synthesis, characterization, and mechanical properties, as well as the effect of the interpenetrating microstructure on the toughening mechanisms and other properties will be discussed.
- OSTI ID:
- 100538
- Report Number(s):
- CONF-941144-; ISBN 1-55899-266-9; TRN: IM9540%%9
- Resource Relation:
- Conference: Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 28 Nov - 9 Dec 1994; Other Information: PBD: 1995; Related Information: Is Part Of Ceramic matrix composites -- Advanced high-temperature structural materials; Lowden, R.A.; Ferber, M.K. [eds.] [Oak Ridge National Lab., Oak Ridge, TN (United States)]; Hellmann, J.R. [ed.] [Pennsylvania State Univ., University Park, PA (United States). Center for Advanced Materials]; Chawla, K.K. [ed.] [New Mexico Inst. of Mining and Technology, Socorro, NM (United States)]; DiPietro, S.G. [ed.] [Textron Specialty Materials, Lowell, MA (United States)]; PB: 493 p.; Materials Research Society symposium proceedings, Volume 365
- Country of Publication:
- United States
- Language:
- English
Similar Records
Microstructure and properties of Al{sub 2}O{sub 3}/Al composites formed by in situ reaction of aluminum and mullite
Fabrication and properties of alumina matrix composites containing nickel aluminide reinforcements