Reza Jafari

As a doctoral researcher within the Faculty of Engineering and Natural Sciences, my passion lies in creating resilient coatings capable of withstanding harsh conditions. My background focus was on the fabrication of coatings for protection against corrosive environments at high temperatures. Currently, I am conducting research on cold-sprayed composite coatings with the objective of improving their longevity and operational efficiency by tailoring their microstructural properties. With access to state-of-the-art facilities at the material characterization (Tampere Microscopy Center) and coating technologies group facilities, I'm committed to pushing the boundaries of material innovation.

• Materials Characterization
• Coating Development
• Surface Engineering
• Corrosion Evaluation 

• Functional Coatings (wear-resistant, corrosion protection, engineered wetting)
• Materials Characterization and Deformation Analysis
• Thermal and Cold Spraying

• 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. 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.
• 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, 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.
• 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