Synthesis of intermetallic NiAl and Ni3Al fine powders through organometallic precursors
- 1 May 1991
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 6 (5) , 928-934
- https://doi.org/10.1557/jmr.1991.0928
Abstract
Fine powders of intermetallic NiAl and Ni3Al were synthesized through organometallic precursors, which were coprecipitated from aqueous solutions of NiCl2 and AlCl3 by the addition of ammonium benzoate and hydradinium monochloride as precipitants. Ni3Al and NiAl were synthesized by a two-step heat treatment of the precursors. The initial step was the thermal decomposition of organic groups to form homogeneous mixtures of Ni3C, amorphous Al2O3, and free C below 1000 °C. The other step was the reaction above 1300 °C to form the intermetallics. Single phase powders of NiAl and Ni3Al with the particle size less than 3 μm were obtained above 1300 and 1400 °C, respectively.Keywords
This publication has 9 references indexed in Scilit:
- Microscopy and tensile behavior of melt-spun Ni-Al-Fe alloysMetallurgical Transactions A, 1990
- Effect of preoxidation and grain size on ductility of a boron-doped Ni3Al at elevated temperaturesActa Metallurgica, 1989
- Microstructure of atomized Ni3Al–B powderJournal of Materials Research, 1989
- Room temperature tensile ductility in polycrystalline B2 NiAlScripta Metallurgica, 1989
- Synthesis of nickel aluminides by mechanical alloyingMaterials Letters, 1988
- Superplasticity in Recrystallized Ni3Al Doped with BoronJournal of the Japan Institute of Metals and Materials, 1988
- The influence of grain size and composition on 1000 to 1400K slow plastic flow properties of NiAlJournal of Materials Science, 1988
- A brittle to ductile transition in NiAl of a critical grain sizeScripta Metallurgica, 1983
- The deformation properties and electron microscopy studies of the intermetallic compound NiAlActa Metallurgica, 1966