D. Heger

TU Bergakademie Freiberg

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David Rafaja

TU Bergakademie Freiberg

V. Klemm

TU Bergakademie Freiberg

Gerhard Schreiber

Helmut Schmidt University

Milan Dopita

Charles University

Christina Wüstefeld

TU Bergakademie Freiberg

MŠ

M. Šı́ma

SHM (Czechia)

H. Hildebrand

Friedrich-Alexander-Universität Erlangen-Nürnberg

MŠ

Michal Šíma

SHM (Czechia)

A. Poklad

TU Bergakademie Freiberg

Milan Růžička

Technical services for air protection Prague (Czechia)

Cooperative Institutions

TU Bergakademie Freiberg

Technical University of Darmstadt

Society for Chemical Engineering and Biotechnology

Medizinisch Wissenschaftliche Verlagsgesellschaft (Germany)

John Wiley & Sons (Germany)

Deutsche Gesellschaft für Materialkunde

Gerresheimer (Germany)

Chemnitz University of Technology

Saarland University

Max-Planck-Institut für Nachhaltige Materialien

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Phase equilibria at 1473K in the ternary Al–Cr–Ti system

Journal of Alloys and Compounds (2012)

Mario J. Kriegel D. Pavlyuchkov Damian M. Cupid Olga Fabrichnaya D. Heger

Isothermal process

Laves phase

Ternary numeral system

Ternary compound

Powder Diffraction

10.1016/j.jallcom.2012.10.123

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Citations (8)

Magnetic response of (Cr,Al,Si)N nanocrystallites on the microstructure of Cr—Al—Si—N nanocomposites

Zeitschrift für Kristallographie (2010)

David Rafaja Christina Wüstefeld Jürgen Kutzner Arutiun P. Ehiasarian Michal Šíma

A combination of microstructure analysis and ab initio calculations helped us to describe the interplay between the microstructure of Cr—Al—Si—N thin film nanocomposites and the ordering of the magnetic moments in the chromium-rich phase of (Cr,Al)N. The microstructure of the Cr—Al—Si—N nanocomposites was modified through the degree of ionisation of the deposited species in three physical vapour deposition processes – cathodic arc evaporation, unbalanced magnetron sputtering and high power impulse magnetron sputtering. According to the results of the ab initio calculations, the magnetic ordering was concluded from the expansion of the elementary cell and from the change of the crystal anisotropy of the elastic constants of (Cr,Al)N; these microstructure features were obtained from X-ray diffraction experiments. The microstructure of the Cr—Al—Si—N nanocomposites was furthermore characterised using the combination of X-ray diffraction and transmission electron microscopy with high resolution in order to obtain information about the phase composition of the thin films, distribution of individual elements and the crystallite size.

Selected area diffraction

10.1524/zkri.2010.1347

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Citations (13)

CCDC 1916323: Experimental Crystal Structure Determination

The Cambridge Structural Database (2019)

D. Heger Alexis J. Eugene Sean Parkin Marcelo I. Guzmán

10.5517/ccdc.csd.cc22b2wd

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Citations (0)

On the preferred orientation in Ti_{1 –x}Al_xN and Ti_1–x–yAl_xSi_yN thin films

Zeitschrift für Metallkunde (2005)

David Rafaja A. Poklad Gerhard Schreiber V. Klemm D. Heger

Abstract The influence of the deposition geometry and the chemical composition on the form and degree of the preferred orientation of crystallites was investigated in TiN, Ti1–xAlxN, and Ti1–x–yAlxSiyN thin films deposited by cathodic arc evaporation. The deposition geometry was varied by changing the angle between the cathodes and the substrates. The chemical composition of the thin films was modified by the choice of the cathodic materials. In TiN thin films, the crystallites were preferentially oriented with the {111} direction perpendicular to the sample surface, independent of the deposition geometry. Besides, a well-pronounced in-plane texture was observed. Co-deposition of Ti, Al, and Si in nitrogen atmosphere stimulated inclination of the texture direction towards the sample surface, which can be described as a change of the texture direction related to the sample surface perpendicular direction, and reduced the amount of the in-plane texture in the coatings (the preferred orientation of crystalli...

10.3139/146.101095

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Citations (6)

The growth of beta phase in the gamma-brass–copper diffusion couple

Materiali in tehnologije (2017)

Adhurim Hoxha D. Heger

In this work we make a quantitative investigation of the growth of the b-phase in the g-brass/copper diffusion couple.The diffusion couple was produced by electrolysis.The analysis of multiphase diffusion in the g-brass/copper system was based on using the concentration-depth profiles provided by electron micro-beam analyzer.The growth constant of the b-phase for each of the used temperatures was calculated from the time dependency of the b-phase thickness.Using the Matano method it was possible to calculate the interdiffusion coefficient of Zn in the b-phase.The activation energy for the diffusion of Zn in the b-phase was also determined.

Brass

BETA (programming language)

10.17222/mit.2015.277

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Citations (2)

CCDC 205311: Experimental Crystal Structure Determination

The Cambridge Structural Database (2003)

Miroslav Zabadal D. Heger M. Nečas Petr Klán

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Crystal (programming language)

10.5517/cc6wmym

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Citations (0)

Nitrogen Diffusion in Highly-Alloyed Cr-Steels

Defect and diffusion forum/Diffusion and defect data, solid state data. Part A, Defect and diffusion forum (1997)

D. Heger T.V. Doung

10.4028/www.scientific.net/ddf.143-147.443

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Citations (5)

Formation of defect structures in hard nanocomposites

Surface and Coatings Technology (2008)