Tadeusz Kubaszek

Scopus Publications

The Influence of Plasma Spraying Process Parameters on Microstructure and Selected Properties of Novel NiCrAl-Cr3C2 Composite Coating
Tadeusz Kubaszek, Barbara Kościelniak, Marek Góral, Weronika Głód
Solid State Phenomena, 2026
The paper presents a new concept of a thermally sprayed composite coating obtained by mixing NiCrAl powder with chromium carbide Cr₃C₂ in an amount of approximately 30 wt.%. The aim of the research was to obtain a material combining the advantages of a metallic matrix and a ceramic phase, with increased resistance to wear and erosion. The plasma spraying (APS) process was carried out on a carbon steel substrate with variable technological parameters: arc current intensity (300/500/700 A) and hydrogen flow (4/8/12 NLPM), while maintaining the other conditions constant.The thickness, porosity, microstructure, chemical composition (using the EDS method), hardness, erosion resistance, and tribological wear of the coatings were evaluated. The results showed that the greatest thickness (approx. 150 µm) and lowest porosity (below 3 vol. %) were obtained at the maximum process parameters – 700 A and 12 NLPM. In turn, the thinnest and most irregular coating (approx. 70 µm) was obtained at the lowest hydrogen flow (4 NLPM), which was due to insufficient melting of the powder particles.Increasing the current intensity and hydrogen flow had a beneficial effect on all analyzed coating properties – especially hardness (up to 273.7 HV0.2), erosion resistance (the smallest mass loss of 0.007 g), and tribological wear resistance (the smallest volume loss of 2.925 mm³). A decrease in any of the parameters resulted in a deterioration of the layer properties. The optimal mechanical and structural properties of the NiCrAl + Cr₃C₂ composite coating were achieved at the maximum plasma spraying parameters: a power current of 700 A and a hydrogen flow rate of 12 NLPM.
Examination of Conductive WC-Ni and Thermal Barrier Coatings Using an Eddy Current Probe
Grzegorz Tytko, Tadeusz Kubaszek, Marek Góral, Bo Feng, Yating Yu
Applied Sciences Switzerland, 2025
In many industrial applications, engine, turbine, and rotor components are coated with thin layers that protect them from corrosion, high temperatures, or pressure. This paper presents a fast and effective method for testing such protective coatings. For this purpose, an eddy current probe consisting of a single coil was designed and constructed. The high sensitivity of the probe was achieved by using a pot core, which significantly reduced magnetic flux losses. In addition to the substrate, the test samples also contained carbide coatings or thermal barrier coatings (TBCs), which were sprayed with an Axial III triple-plasma torch or a single-electrode torch. The use of different process parameters made it possible to obtain coatings of varying thickness, which were determined using a scanning electron microscope (SEM). Measurements of the probe impedance components were performed in the frequency range from 500 Hz to 50 kHz. In all cases, based on the analysis of changes in resistance and reactance, it was possible to distinguish each of the tested samples. Even slight changes in thickness of only 9 μm caused significant changes in probe impedance, enabling effective testing of carbide coatings and TBCs.
Effect of Ti Doping of Al0.7CoCrFeNi-Based High Entropy Alloys on Their Erosion Resistance by Solid Particles
Wojciech J. Nowak, Tadeusz Kubaszek, Andrzej Gradzik, Małgorzata Grądzka-Dahlke, Dariusz Perkowski, et al.
Materials, 2025
The erosion resistance of materials against solid particles is a very important property, especially in the transportation of powders or in aeronautics (dust inside jet engines). There is a strong need to introduce new materials that have higher solid particle erosion resistance than state-of-the-art materials. Thus, in the present work, the solid erosion particles of high entropy alloys (HEAs) based on the Al0.7CoCrFeNi matrix were studied compared to the state-of-the-art stainless steel AISI 304. Furthermore, the effect of the addition of Ti to HEAs on hardness and erosion resistance was investigated. Current research included the development of the chemical composition of a new kind of HEA designed on the basis of thermodynamical calculations performed in CALPHAD, its manufacturing, full characterization involving microstructural and phase analyses, hardness measurements, solid particle erosion tests, and finally, the elucidation of erosion mechanisms. It was found that HEAs showed higher hardness as well as erosion resistance than AISI 304. Moreover, it was found that the increase in Ti content in an HEA resulted in an increase in the hardness and resistance to the erosion of the studied HEA. As the main reason for this phenomenon, the stabilization of the β-BCC phase, suppression of the α-FCC phase, and the appearance of the Ni3Ti phase in the studied HEA were claimed.
Thermal Conductivity of Sustainable Earthen Materials Stabilized by Natural and Bio-Based Polymers: An Experimental and Statistical Analysis
Rizwan Shoukat, Marta Cappai, Giorgio Pia, Tadeusz Kubaszek, Roberto Ricciu, et al.
Energies, 2025
The natural and sustainable ability of earthen building materials makes them highly valuable. Bio-stabilization involves using biological materials or processes in earthen construction to enhance the performance and characteristics of earthen materials. The main objective of bio-stabilization is to substitute high-energy-intensive building materials with more green, thermally efficient substitutions, ultimately reducing indirect emissions. The large-scale use of earth presents a viable alternative due to its extensive availability and, more importantly, its low embodied energy. The aim of this work is to investigate the thermal conductivity of earth stabilized with Opuntia Ficus-Indica (OFI), a natural biopolymer, and to assess how these properties vary based on mix design. A comparative analysis is performed to evaluate the thermal performance of bio-based polymer-stabilized earthen materials (S-30, S-40, D-30, and D-40) alongside natural biopolymer-stabilized earth (OFI-30 and OFI-40) under dry conditions, employing an experimental method. A scanning electron microscope was employed to examine the microstructure of bio-stabilized earthen materials from the samples. Statistical analysis was conducted on the collected data using ANOVA with a significance level of 0.05. The Tukey test was applied to identify specific mean pairings that demonstrate significant differences in the characteristics of the mixtures at each replacement level, maintaining a confidence interval of 95%. The experimental and statistical findings reveal that the OFI-30, D-40, and S-40 mixtures exhibit strong bonding with earthen materials and high thermal performance compared to all other mix designs in environmental samples. Additionally, these mix designs show further improvement in thermal performance in the dry conditions.
TBC SYSTEMS FOR HIGH MELTING POINT METALS AND ALLOYS
Grzegorz MOSKAL, Agata DUDEK, Marta MIKUŚKIEWICZ, Tadeusz KUBASZEK, Mirosław TUPAJ, et al.
Metal International Conference on Metallurgy and Materials Conference Proceedings, 2025
THE INFLUENCE OF PLASMA SPRAYING PARAMETERS ON STRUCTURE AND PROPERTIES OF STELLITE 31-Cr3C2 COMPOSITE COATING
Tadeusz Kubaszek, Barbara Kościelniak, Marek Góral, Kacper Hładun, Kamila Świerk
Composites Theory and Practice, 2024
The influence of MCrAlY coating application and its thickness on the heat transfer during water spray cooling
Elżbieta Jasiewicz, Beata Hadała, Tadeusz Kubaszek, Barbara Kościelniak, Agnieszka Cebo-Rudnicka, et al.
International Journal of Heat and Mass Transfer, 2024
The Influence of Plasma Spraying Parameters on Microstructure and Porosity of Bronze-Polyester Coatings for Plain Bearings Applications
Marek Góral, Tadeusz Kubaszek, Barbara Kościelniak, Dorota Stawarz
Solid State Phenomena, 2024
The plasma sprayed bronze coatings are widely used for repairing of plain bearing used in different applications. This type of coating was not deeply analyzed in state-of-art publications. In presented article we fill this gap in the case of plasma spraying process. The influence of power current (300/500/700A) and hydrogen flow (0/4/8 NLPM) on microstructure and thickness of aluminium bronze-polyester coating was investigated. The Thermico A60 plasma torch was used for thermal spray process of coating on flat carbon steel samples (grade S355). The Metco 604NS was sprayed with 20g/min powder feed rate. The obtained results showed the presence of local large pores formed by burning of polyester in plasma plume. This gap makes role of oil pockets in bearings. The obtained coatings were characterized by large deviation in thickness in range 200-350 micrometers. It might be concluded that in requires additional milling process after deposition.
The Manufacturing of Environmental Barrier Coatings by HV-APS Plasma Spraying Using Er2O3 and SiO2 Powder Mixture
Paweł Pędrak, Tadeusz Kubaszek, Barbara Kościelniak, Marek Góral, Mateusz Micał
Manufacturing Technology, 2024
The influence of plasma spraying parameters on microstructure and hardness of aluminium-bronze-polyester-YSZ composite coatings for plain bearings applications
MAREK GÓRAL
Ochrona Przed Korozja, 2024
The Structure of Boride Diffusion Coatings Produced on Selected Grades of Structural Steels
Marek Góral, Barbara Kościelniak, Kamil Ochał, Tadeusz Kubaszek, Jakub Jopek, et al.
Solid State Phenomena, 2024
The Influence of Industrial-Scale Pack-Boroding Process Time on Thickness and Phase Composition of Selected Cold-Work Tool Steels
Jakub Jopek, Marek Góral, Barbara Koscielniak, Kamil Ochal, Marcin Drajewicz, et al.
Manufacturing Technology, 2023
The influence of HV-APS process parameters on microstructure and erosion resistance of metalloceramic WC-CrC-Ni coatings
Tadeusz Kubaszek, Marek Góral, Anita Słyś, Dawid Szczęch, Kamil Gancarczyk, et al.
Ceramics International, 2023
The Concept of WC-CrC-Ni Plasma-Sprayed Coating with the Addition of YSZ Nanopowder for Cylinder Liner Applications
Marek Goral, Tadeusz Kubaszek, Wieslaw A. Grabon, Karol Grochalski, Marcin Drajewicz
Materials, 2023
Effect of plasma spraying parameters on microstructure and thickness and porosity of WC-CrC-Ni coatings deposited on titanium
Krzysztof Szymkiewicz, Marek Góral, Tadeusz Kubaszek, Kamil Gancarczyk
Kovove Materialy, 2023
The erosion resistance of Cr/CrN multilayer coating deposited using industrial Arc-PVD process for compressor blades application
MAREK GÓRAL
Ochrona Przed Korozja, 2023
Influence of air plasma spraying process parameters on the thermal barrier coating deposited with micro- and nanopowders
Tadeusz Kubaszek, Marek Góral, Paweł Pędrak
Materials Science Poland, 2022
The Diffusion Coatings for Industrial Tool Application
Marcin Drajewicz, Adrianna Przybylo, Jakub Jopek, Marek Góral, Barbara Koscielniak, et al.
Manufacturing Technology, 2022
The formation of Si-aluminide coating formed by plasma spraying and subsequent diffusion annealing on Ti-Al-7Nb intermetallic alloy
M. Góral, P.C. Monteiro, P. Sosnowy, M. Woźniak, T. Kubaszek, et al.
Archives of Materials Science and Engineering, 2022
The microstructure and thermal properties of Yb2SiO5 coating deposited using APS and PS-PVD methods
P. Rokicki, M. Góral, T. Kubaszek, K. Dychton, M. Drajewicz, et al.
Archives of Materials Science and Engineering, 2022
The Influence of Reactive PS-PVD Process Parameters on the Microstructure and Thermal Properties of Yb2 Zr2 O7 Thermal Barrier Coating
Paweł Pędrak, Marek Góral, Kamil Dychton, Marcin Drajewicz, Malgorzata Wierzbinska, et al.
Materials, 2022
Thermal Spraying of MCrAlY Overlay Coating Using New Ethanol-Fueled HVOF Gun
Marek Góral, Tadeusz Kubaszek, Barbara Kościelniak
Solid State Phenomena, 2022
STRUCTURE AND THICKNESS OF Y2 O3 COATINGS DEPOSITED BY PLASMA SPRAY PHYSICAL VAPOUR DEPOSITION (PS-PVD) METHOD ON GRAPHITE
Metalurgija, 2022
The influence of selected plasma spraying parameters on microstructure and porosity of molybdenum coating
Tadeusz Kubaszek
Ochrona Przed Korozja, 2022
The Formation of Two-Layer YSZ Ceramic Coatings Produced in Single Step PS-PVD Process
Marek Góral, Paweł Pędrak, Wojciech Cmela, Tadeusz Kubaszek, Marcin Drajewicz
Solid State Phenomena, 2022