Reza Jafari

I am a materials scientist and Postdoctoral Research Fellow at Tampere University, working at the interface of surface engineering, microstructural characterization, and durability of engineering materials. My research focuses on extending the lifetime of components through microstructural engineering, advanced coating technologies, and post-processing routes that can be connected to real industrial needs. I work with cold spray, thermal spray, wear, corrosion, cavitation erosion, and advanced microscopy-based characterization. Beyond the formal research questions, I see microstructural characterization as a personal curiosity and visual practice: looking deeper into materials, interpreting their hidden structures, and gradually building an image archive that I hope to shape one day into an art gallery of microstructures.

• R. Jafari, M. Honkanen, M. Vippola, H. Koivuluoto, Highly efficient solid-state fabrication of aluminum alloy reinforced by tungsten carbide particulate via cold spray deposition: Microstructure and wear resistance, Materials Today Communications 51 (2026) 114881. https://doi.org/10.1016/j.mtcomm.2026.114881.
• J.T.M. Oja, K. Kiuru, J. Savolainen, R. Jafari, B. Aktas, H. Koivuluoto, Electrothermal and gravity-based de-icing of selected materials, Mater. Res. Express 13 (2026) 036402. https://doi.org/10.1088/2053-1591/ae4098.
• R. Jafari, R. Pero, E. Helmi, M. Zohrevand, T. Gundgire, M. Honkanen, M. Vippola, H. Koivuluoto, Improved structural integrity of cold-sprayed aluminum alloy-quasicrystal composite coatings assessed by cavitation erosion testing, Applied Surface Science Advances 31 (2026) 100924. https://doi.org/10.1016/j.apsadv.2025.100924.
• R. Jafari, M. Honkanen, M. Amer, T. Salminen, M. Bai, H. Koivuluoto, M. Vippola, Impact-Induced Deformation and Microstructural Evolution in Cold-Spray Deposition of Aluminum Alloy–Quasicrystal Composite: A Characterization Perspective, Materials & Design 253 (2025). https://doi.org/10.1016/j.matdes.2025.113977.
• R. Khammas, R. Jafari, H. Koivuluoto, Icephobic performance of low-pressure cold sprayed PEEK SLIPS, Cold Regions Science and Technology 243 (2026) 104791. https://doi.org/10.1016/j.coldregions.2025.104791.
• M. Müggenburg, H. Mokhtarian, H. Koivuluoto, H. Jahns, R. Jafari, S. Panicker, E. Helmi, M. Arsalan, K. Thiele, J. Unglaub, Mechanical properties and corrosion protection of DED-Arc additively manufactured high-strength low-alloy steel components coated with low-pressure cold spray, Weld World 70 (2026) 521–534. https://doi.org/10.1007/s40194-025-02251-8.
• M. Müggenburg, M. Altobelli, S. Vogts, H. Jahns, R. Jafari, H. Mokhtarian, S. Panicker, H. Koivuluoto, J. Hensel, K. Thiele, J. Unglaub, Fatigue performance of high-strength low-alloy DED-Arc components with Zn + Al2O3 low-pressure cold spray coating, Weld World (2025). https://doi.org/10.1007/s40194-025-02262-5.
• M. Zohrevand, R. Jafari, V.K. Nadimpalli, T. Dahmen, S. Barlibayev, K. Turkmenov, B. Mirzaev, A. Amanov, Ultrasonic nanocrystal surface modification for post-processing of additively manufactured AISI 440C stainless steel, Additive Manufacturing Letters 15 (2025) 100335. https://doi.org/10.1016/j.addlet.2025.100335.
• R. Alikhanifaradonbeh, R. Jafari, M. Zohrevand, Nonappa, H. Koivuluoto, Superhydrophobic Coatings by Suspension Flame Spraying for Outdoor Conditions, J Therm Spray Tech (2025). https://doi.org/10.1007/s11666-025-02137-7.
• B. Aktaş, R. Jafari, H. Koivuluoto, Flame-Sprayed Ceramic and Metallic Slippery Liquid-Infused Porous and Icephobic Surfaces, J Therm Spray Tech 34 (2025) 1843–1854. https://doi.org/10.1007/s11666-025-01989-3.
• R. Jafari, J. Cizek, F. Lucak, L. Cvrcek, B. Matej, J. Walter, J. Kiilakoski, M. Honkanen, M. Vippola, H. Koivuluoto, (2023). J Therm Spray Tech 33, 705–718 (2024). https://doi.org/10.1007/s11666-024-01758-8
• R. Jafari, M. Honkanen, T. Salminen, H. Koivuluoto, M. Vippola, (2023). Cold sprayed Aluminum-Quasicrystal Composite Coating: Bonding Mechanism Evaluation by SEM and TEM, in: SCANDEM 2023: 73rd Annual Meeting of the Nordic Microscopy Society, Uppsala, Sweden.
• R. Jafari, J. Cizek, F. Lucak, L. Cvrcek, B. Matej, J. Walter, J. Kiilakoski, M. Honkanen, M. Vippola, H. Koivuluoto, (2023). Tribological assessment of cold sprayed aluminum-quasicrystal composite coatings, in: ITSC 2023, ASM International, Quebec. https://doi.org/10.31399/asm.cp.itsc2023p0200
• Jafari, R., Kiilakoski, J., Honkanen, M., Vippola, M., & Koivuluoto, H. (2023). Wetting Behavior and Functionality Restoration of Cold-Sprayed Aluminum-Quasicrystalline Composite Coatings. Journal of Thermal Spray Technology. https://doi.org/10.1007/s11666-022-01522-w
• Jafari, R., Kiilakoski, J., Honkanen, M., Vippola, M., & Koivuluoto, H. (2022). A microstructure-based approach towards cold sprayed composite coating quality assessment. 45-46. Abstract from Scandem 2022, Finland.
• Alebrahim, M., Pakseresht, A., Jafari, R., Galusek, D., & Sharifian Jazi, F. (2022). The Effect of Additional Ceramic Fiber on Wear and Mechanical Properties of Thermal Barrier Coatings (pp. 1–19). https://doi.org/10.4018/978-1-7998-9683-8.ch001
• Cinca, N., Lavigne, O., Peres, R. N., Conze, S., Hoehn, S., Dosta, S., Koivuluoto, H., Kim, C., da Silva, F. S., Matikainen, V., Jafari, R., Tarrés, E., & Benedetti, A. V. (2022). Electrochemical Corrosion Characterization of Submicron WC-12Co Coatings Produced by CGS and HVAF Compared with Sintered Bulks. Coatings, 12(5), 620. https://doi.org/10.3390/coatings12050620
• Alehojat, M., Jafari, R., Karimi, P., Sadeghi, E., (2020) Electron beam-powder bed fusion of Alloy 718: effect of thermal spraying and hot isostatic pressing on microstructural characteristics and oxidation performance, Surf. Coat. Technol. https://doi.org/10.1016/j.surfcoat.2020.126626
• Sadeghi, E., Pant, B., Jafari, R., Peng, R., Karimi, P., (2020) Subsurface grain refinement of EBPBF built Alloy 718: surface characteristics and oxidation performance, Mater. Charact.https://doi.org/10.1016/j.matchar.2020.110567
• Jafari, R., & Sadeghi, E. (2019). High-temperature corrosion performance of HVAF-sprayed NiCr, NiAl, and NiCrAlY coatings with alkali sulfate/chloride exposed to ambient air. Corrosion Science. https://doi.org/10.1016/j.corsci.2019.06.021
• Jafari, R., Sadeghimeresht, E., Farahani, T. S., Huhtakangas, M., Markocsan, N., and Joshi, S.,(2018), “KCl-Induced High-Temperature Corrosion Behavior of HVAF-Sprayed Ni-Based Coatings in Ambient Air,” J. Therm. Spray Technol., 27(3), pp. 500–511. https://doi.org/10.1007/s11666-017-0684-9