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Świątek Z.♦, Gradys A., Maj Ł.♦, Morgiel J.♦, Marszałek K.W.♦, Mania R.♦, Szlezynger M.♦, XRD and TEM in situ Heating of Large Period Ni/Al Multilayer Coatings,
ACTA PHYSICA POLONICA A, ISSN: 0587-4246, DOI: 10.12693/APhysPolA.130.880, Vol.130, No.4, pp.880-883, 2016 Abstract:
The Ni/Al multilayer coating of λ ≈100 nm was deposited onto (001)-oriented monocrystalline silicon substrate using double target magnetron sputtering system equipped with rotating sample holder. The thicknesses of alternating layers were adjusted in the way to preserve the chemical composition ratio close to 50%Al:50%Ni (at.%). The in situ X-ray diffraction and in situ transmission electron microscopy heating experiments were carried out at relatively low heating rates (20°C/min) in order to study the phase transformation sequence. The investigations revealed that the reaction between Ni and Al multilayers starts at ≈200°C with precipitation of Al₃Ni phase, while above 300°C dominates precipitation of Ni₃Al and NiAl intermetallic phases. Both the X-ray and electron diffractions acquired at 450°C confirmed presence of the Ni₃Al and NiAl intermetallics, but the former pointed at still lasting traces of Ni(Al) solid solution. Keywords:
transmission electron microscopy, multilayers Affiliations:
| Świątek Z. | - | Institute of Metallurgy and Materials Science, Polish Academy of Sciences (PL) | | Gradys A. | - | IPPT PAN | | Maj Ł. | - | Institute of Metallurgy and Materials Science, Polish Academy of Sciences (PL) | | Morgiel J. | - | Institute of Metallurgy and Materials Science, Polish Academy of Sciences (PL) | | Marszałek K.W. | - | AGH University of Science and Technology (PL) | | Mania R. | - | AGH University of Science and Technology (PL) | | Szlezynger M. | - | Institute of Metallurgy and Materials Science, Polish Academy of Sciences (PL) |
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