Partner: J. Morgiel

Institute of Metallurgy and Materials Science, Polish Academy of Sciences (PL)

Ostatnie publikacje
1.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

Streszczenie:

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.

Słowa kluczowe:

transmission electron microscopy, multilayers

Afiliacje autorów:

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)
15p.

Prace konferencyjne
1.Pietrzak K., Jach K., Kaliński D., Chmielewski M., Morgiel J., Processing and Microstructure of Al2O3-Cu Composite Material Interpenetrating Network Type, Euro PM2011 Congress and Exhibition, 2011-10-09/10-12, Barcelona (ES), Vol.2, pp.1-6, 2011

Streszczenie:

Alumina/copper composites have been used where high thermal conductivity, high absorption and dissipation of heat, high resistance to thermal fatigue and good frictional wear resistance are required. This kind of composites may be applied in medicine, electronic and automotive industry. Both the physical and mechanical properties of this type of composites are strongly influenced by the properties of its individual constituents and, also, by the properties of interface layer between ceramic and metal. One of the solution, from the point of view of the best properties’ achievements (especially thermal, structural and shape stability), is the production of ceramic-metal composites with interpenetrating networks structure. They can be produced using porous alumina performs, which are infiltrated (pressure or pressureless) by molten metal or sintered with metallic powders. The subject of the presented paper is the development of the interpenetrating network Al2O3-Cu composites, processed by sintering porous ceramic perform (85 and 90% porosity) with copper powder. The paper presents the new developed technology, results of microstructure investigations, measurements of the selected physical and mechanical properties and the analysis of the influence of the processing conditions on the properties and interface morphology between ceramic and copper

Afiliacje autorów:

Pietrzak K.-IPPT PAN
Jach K.-Institute of Electronic Materials Technology (PL)
Kaliński D.-other affiliation
Chmielewski M.-Institute of Electronic Materials Technology (PL)
Morgiel J.-Institute of Metallurgy and Materials Science, Polish Academy of Sciences (PL)

Abstrakty konferencyjne
1.Bochenek K., Basista M., Morgiel J., Węglewski W., Towards the improvement of fracture toughness of NiAl intermetallics for aerospace applications, ICCE‐25, 25th Annual International Conference on Composites or Nano Engineering, 2017-07-16/07-22, Rome (IT), pp.1-2, 2017
2.Świątek Z., Gradys A., Morgiel J., Marszałek K.W., Mania R., Szlezynger M., Maj Ł., XRD in-situ heating of large period Ni/Al reactive multilayer, XXIII Conference on Applied Crystallography, 2015-09-20/09-24, Krynica Zdrój (PL), pp.23-26, 2015