FORMING OF INTERMETALLIC PHASES DURING INFILTRATION OF NICKEL RODS AND POWDERS WITH MOLTEN ALUMINIUM

Andrej Opálek, Stanislav Kúdela, Martin Nosko, Karol Iždinský, Pavol Štefánik, František Simančík
2013 Acta Metallurgica Slovaca - Conference  
Reaction kinetics in the Al-Ni system was investigated considering the fact that Al-Ni composites have been found as attractive candidates for a number of industrial sectors. Al-Ni composites were prepared by gas-assisted infiltration of either Ni rods or Ni powders with molten Al. Microstructural analysis revealed that various Ni aluminides were grown and their formation and the morphology at the interfacial zones can be effectively controlled by the time of infiltration. Furthermore, we
more » ... rthermore, we pointed to the instability in the Al-Ni system that was caused by the presence of the pure Al metal. This could be completely abolished by the additional thermal treatment.
doi:10.12776/amsc.v3i0.135 fatcat:fnrzgs2e3bh6hnhvsq5z3z2vpu