Synthesis of composite materials via displacement reactions between BN, Ti and Ti-Ni
- Technion, Haifa (Israel). Dept. of Materials Engineering
- Drexel Univ., Philadelphia, PA (United States). Dept. of Materials Engineering
Blends of ultrafine powders BN, Ti and Ti-Ni were high pressure consolidated to full density. The reactions carried out at different temperatures and resulted in synthesis of ceramic-metal, ceramic-intermetallic or ceramic-ceramic composites. The phase composition and microstructure were studied employing x-ray diffraction, SEM/EDS. Microhardness and transverse rupture strength of synthesized composites were measured. Titanium borides and TiN in system BN-Ti were formed at 1,000 C and above, and at lower temperature in system BN-Ti-Ni were obtained NiTi{sub 2} and Ni{sub 3}Ti intermetallics. At 1,200 C in system BN-Ti-Ni were formed titanium borides and nitride in Ni matrix. The synthesized composite materials had very fine microstructure. The obtained results are compared with results obtained in system B{sub 4}C-Ti-Ni.
- OSTI ID:
- 77970
- Report Number(s):
- CONF-950201--; ISBN 0-87339-283-3
- Country of Publication:
- United States
- Language:
- English
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