Development of an Alternative Manufacturing Technology for Niobium Components
Kawalek A. Ozhmegov K. Garbiec D. Dyja H. Arbuz A.
July 2024Multidisciplinary Digital Publishing Institute (MDPI)
Materials
2024#17Issue 13
Due to their physical and mechanical properties, niobium products are used in the nuclear power industry, chemical industry, electronics, medicine and in the defence industry. Traditional manufacturing technology for these products is characterized by long production cycles and significant material losses during their surface machining. This paper presents the results of a study on the fabrication of niobium products by Spark Plasma Sintering (SPS). Structural and mechanical tests were conducted on the products obtained, as well as a comparative analysis with the properties of products obtained using traditional technology. Based on the analysis of the test results obtained, recommendations were made for the sintering of Nb powders. It was found that the optimum temperature for sintering the powder is 2000 °C as the density of the material obtained is close to the theoretical density. The microstructure obtained is comparable to samples obtained by the traditional method after recrystallization annealing. Samples obtained according to the new technology are characterized by higher mechanical properties Rp0.2 and Rm and the highest hardness.
EBSD , metallography , Nb rods , powder metallurgy , rheological and strength properties , sintering parameters , SPS methods
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Faculty of Production Engineering and Materials Technology, Częstochowa University of Technology, ul. J.H. Dąbrowskiego 69, Częstochowa, 42-201, Poland
Łukasiewicz Research Network, Poznań Institute of Technology, 6 Ewarysta Estkowskiego St, Poznan, 61-755, Poland
Research Facility, AEO Nazarbayev University, 53 Kabanbay Batyr Ave, Nur-Sultan, 010000, Kazakhstan
Faculty of Production Engineering and Materials Technology
Łukasiewicz Research Network
Research Facility
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