Modern technologies of synthesis, 3D printing and consolidation for the manufacture of products from composite materials based on refractory compounds.

DOI: 10.62564/M4-OZ1540

Ostap Zgalat-Lozynskyy

Frantsevich Institute for Problems of Materials Science National Academy of Science of Ukraine


The results of the conducted research became the basis for the development of technology for the synthesis and consolidation of composite materials based on refractory compounds for the manufacture of products that are operated in conditions of extreme temperatures, loads and aggressive environments, as well as the latest materials for 3D printing using Robocasting and FDM technologies. Scientific and practical approaches to obtaining wear-resistant composite materials based on refractory compounds are proposed. The novel approaches of consolidation consist in the use of non-linear modes of materials densification under electrosintering conditions, which made it possible to obtain a number of new composite nanomaterials (grain size ~ 50 nm). The composites based on silicon, titanium, zirconium and niobium nitrides demonstrate a level of wear resistance 2-3 times higher than existing industrial analogues [1] . The technology for the synthesis of composite nanodisperse powders based on silicon nitride in a single technological cycle and nonlinear modes of their consolidation by the methods of spark-plasma sintering and sintering with controlled compaction speed to obtain wear-resistant ceramic products with the effect of self-healing of defects has been developed. A batch of ceramic balls with a diameter of 12 mm and 14 mm was produced for a hybrid rolling bearing with an extended service life, which is promising for use in aviation technology. For the first time in Ukraine, the technology of 3D printing by the Robocasting method was introduced for the manufacture of products of complex shape from composite materials based on refractory compounds and biocomposites [2,3] . IIt has been proven that the use of spark-plasma and microwave sintering is promising for obtaining products of complex shape from polymer-ceramic blanks made by 3D printing by the layer deposition method [4].

Keywords
Composites, 3D printing, ceramics

Acknowledgments
Not provided

References
[1] O. Zgalat-Lozynskyy, I. Kud, L. Ieremenko, L. Krushynska, D. Zyatkevych, K. Grinkevych, O. Myslyvchenko, V. Danylenko, S. Sokhan, A. Ragulya, Synthesis and spark plasma sintering of Si3N4–ZrN self-healing composites, Journal of the European Ceramic Society, Volume 42, Issue 7, 2022, Pages 3192-3203, https://doi.org/10.1016/j.jeurceramsoc.2022.02.033. [2] Zgalat-Lozynskyy, O.B. Materials and Techniques for 3D Printing in Ukraine (Overview). Powder Metall Met Ceram 61, 398–413 (2022). https://doi.org/10.1007/s11106-023-00327-y [3] V. Naumenko, O. Zgalat-Lozynskyy, D. Zyatkevych, 3D printing of the ceramic materials based on Mo₀.₉Cr₀.₁Si₂ by Robocasting technique. Book of Abstracts, 8th International Materials Science Conference HighMatTech-2023, p. 17. October 2-6, 2023 Kyiv, Ukraine [4] Zgalat-Lozynskyy, O.B., Matviichuk, O.O., Litvyn, R.V. et al. Microwave Sintering of 3D Printed Composites from Polymers Reinforced with Titanium Nitride Particles. Powder Metall Met Ceram 62, 164–173 (2023). https://doi.org/10.1007/s11106-023-00380-7