Research Data Repository of Saxon Universities

OPARA is the Open Access Repository and Archive for Research Data of Saxon Universities.


Researchers of Saxon Universities can either publish their research data on OPARA, or archive it here to comply with requirements of funding acencies and good scientic practice, without public access.

You can find the documentation of this service at the OPARA manual websites. If you need suppourt using OPARA please contact the Servicedesk of TU Dresden.

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Communities in OPARA

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Recent Submissions

ItemPublic Metadata
GRK 2802: Influence of vacuum-induction inert-gas atomization parameters on the microstructure and technological characteristics of lightweight Fe–12Cr–9Ni–3Mn–0.3C–4.5Al stainless-steel powders
(Technische Universität Bergakademie Freiberg, 2026-07-23) Angelini, Alberto; Scherbring, Steffen; Upmeier, Till-Bjarne; Bellé, Matheus Roberto; Mola, Javad; Niendorf, Thomas; Volkova, Olena
In the present work, the influence of vacuum induction melting inert gas atomization (VIGA) parameters on the microstructure and properties of Fe–12Cr–9Ni–3Mn–0.3C–4.5Al steel powders was investigated. Thereby, powders were produced at atomization gas pressures between 24 and 29 bar and gas preheating temperatures in the range of 0 and 100 °C. The resulting powders were classified into six different particle size fractions: <25 μm, 25–45 μm, 45–63 μm, 63–100 μm, 100–200 μm, and > 200 μm. Additionally, the powders were characterized in terms of particle size distribution (d10, d50, and d90), yield within the size range of 25–63 μm, magnetic saturation (MSAT), morphology (form factor, convexity, and feret diameter), bulk density, flowability, and secondary dendrite arm spacing (SDAS). Elemental mapping by energy-dispersive X-ray spectroscopy (EDS) in the scanning electron microscope (SEM) was used to investigate the segregation behavior of alloying elements. Furthermore, chemical analyses were performed to evaluate the evaporation of Mn and Cr, as well as the uptake of N, as a function of particle size fraction. The experimental evaluation was supported by Thermo-Calc simulations.
ItemOpen Access
Dataset for publication ``A bin-resolved statistical framework for comparing particle size distributions''
(Technische Universität Bergakademie Freiberg, 2026-07-23) Mitra, Rahul
This dataset accompanies the study introducing the Difference Significance Profile (DSP), a statistically rigorous framework for bin-resolved comparison of particle size distributions (PSDs). It contains particle-level size measurements obtained by in-line SOPAT imaging of spray-dried alumina powders, together with all processed data required to reproduce the statistical analyses presented in the associated publication. The repository includes raw particle-size data, common binned PSDs, probability differences, bin-wise DSP statistics, bootstrap calibration results, covariance matrices, and comparison-level summary statistics for two experimental scenarios: (i) powders produced under different spray-drying temperatures (120 °C and 145 °C) and (ii) repeated experiments under identical conditions (120 °C) to assess repeatability. Additionally, mercury intrusion porosimetry measurements for the two temperature conditions are provided to support the physical interpretation of the observed PSD differences. The dataset enables complete reproduction of the DSP analysis, facilitates benchmarking against alternative PSD comparison methods, and provides a reusable resource for statistical analysis of particle size distributions in particle technology and related fields.
ItemOpen Access
Structure and bonding of rare-earth pnictide chalcogenides REBiTe and RESbS with RE = La, Ce, Pr, Nd
(Universität Leipzig, 2026-07-16) Zahn, Franziska; Benndorf, Christopher
This data set contains the data shown in the figures of the Research article 'Structure and bonding of rare-earth pnictide chalcogenides REBiTe and RESbS with RE = La, Ce, Pr, Nd'
ItemOpen Access
Atomic scale structure and bond stretching force constants in stoichiometric and off-stoichiometric kesterites
(Universität Leipzig, 2026-07-14) Ritter, Konrad; Gurieva, Galina
This contains the data from figures and tables in: https://doi.org/10.1063/5.0169755 .
ItemOpen Access
Data and simulations for green hydrogen development in Cameroon
(Technische Universität Bergakademie Freiberg, 2026-07-14) Brumme, Anja; Golub, Alexander; Markandya, Anil; Rübbelke, Dirk
We examine the conditions and consequences of establishing green hydrogen facilities in Cameroon. Using publicly available data, we develop a normative numerical model to identify potential trajectories for macroeconomic and environmental indicators. This dataset contains raw and processed data as well as simulation results and sensitivity analyses of key parameters.