Features of Seed Crystal Orientation for Plasma-Induction Growth of Profiled Molybdenum Single Crystals

Issues » Volume 47, Issue 12

V. O. Shapovalov, V. V. Yakusha, Yu. O. Nykytenko, O. M. Hnizdylo, Ye. V. Miroshnychenko, Yu. A. Khokhlova

E. O. Paton Electric Welding Institute, N.A.S. of Ukraine, 11 Kazymyr Malevych Str., UA-03150 Kyiv, Ukraine

Received: 24.11.2025; final version - 25.11.2025. Download: PDF

This work presents the results of studying the orientation of seed molybdenum single crystals for subsequent use of them in plasma-induction growth of profiled single-crystal ingots. A methodology is proposed for determining the crystallographic orientation of seed crystals based on the analysis of crack patterns formed on their surface after electrical-discharge machining combined with wide-angle x-ray diffraction data. As shown, the configuration of the cracks correlates with the orientation of {100}-type planes within the body-centred cubic (b.c.c.) lattice of molybdenum, enabling the identification of the {111}, {112}, and {110} planes without applying the Laue method. As established, the growth of single-crystal plates from seed crystals oriented in the {111} plane ensures the formation of profiled single crystals with {110}-type side facets and the {112} growth plane. The obtained results are confirmed by x-ray diffraction analysis, which demonstrates the high accuracy of the orientation of the grown samples. The practical significance of this work lies in simplifying and improving the accuracy of seed-crystal orientation during plasma-induction growth of profiled molybdenum single crystals that is essential for the development of high-power laser and diagnostic optical components.

Key words: molybdenum single crystal, plasma-induction growth, seed-crystal orientation, electroerosion cutting, x-ray diffraction, crystallographic orientation.

URL: https://mfint.imp.kiev.ua/en/abstract/v47/i12/1269.html

DOI: https://doi.org/10.15407/mfint.47.12.1269

PACS: 61.05.cp, 64.70.dg, 81.05.Bx, 81.10.Aj, 81.10.Fq, 81.30.Fb, 81.40.Ef

Citation: V. O. Shapovalov, V. V. Yakusha, Yu. O. Nykytenko, O. M. Hnizdylo, Ye. V. Miroshnychenko, and Yu. A. Khokhlova, Features of Seed Crystal Orientation for Plasma-Induction Growth of Profiled Molybdenum Single Crystals, Metallofiz. Noveishie Tekhnol., 47, No. 12: 1269–1280 (2025) (in Ukrainian)

REFERENCES

R. Morales-Estrella, R. E. Aune, O. Grinder, and S. Seetharaman, JOM, 55, No. 10: 20 (2003).
M. Rieth, S. L. Dudarev, S. M. Gonzalez de Vicente, J. Aktaa, T. Ahlgren, S. Antusch, D. E. J. Armstrong, M. Balden, N. Baluc, M.-F. Barthe, W. W. Basuki, M. Battabyal, C. S. Becquart, D. Blagoeva, H. Boldyryeva, J. Brinkmann, M. Celino, L. Ciupinski, J. B. Correia, A. De Backer, C. Domain, E. Gaganidze, C. García-Rosales, J. Gibson, M. R. Gilbert, S. Giusepponi, B. Gludovatz, H. Greuner, K. Heinola, T. Höschen, A. Hoffmann, N. Holstein, F. Koch, W. Krauss, H. Li, S. Lindig, J. Linke, Ch. Linsmeier, P. López-Ruiz, H. Maier, J. Matejicek, T. P. Mishra, M. Muhammed, A. Muñoz, M. Muzyk, K. Nordlund, D. Nguyen-Manh, J. Opschoor, N. Ordás, T. Palacios, G. Pintsuk, R. Pippan, J. Reiser, J. Riesch, S. G. Roberts, L. Romaner, M. Rosiński, M. Sanchez, W. Schulmeyer, H. Traxler, A. Ureña, J. G. van der Laan, L. Veleva, S. Wahlberg, M. Walter, T. Weber, T. Weitkamp, S. Wurster, M. A. Yar, J. H. You, and A. Zivelonghi, J. Nuc. Mater., 432, Nos. 1–3: 482 (2013).
H. Xu, L. L. He, Y. F. Pei, C. Z. Jiang, W. Q. Li, and X. H. Xiao, Tungsten-Singapore, 3: 20 (2021).
L. B. Lundberg, JOM, 37, No. 4: 44 (1985).
V. V. Satya Prasad, R. G. Baligidad, and A. A. Gokhale, Niobium and Other High Temperature Refractory Metals for Aerospace Applications (Eds. N. Prasad and R. Wanhill) (Singapore: Springer Science + Business Media: 2017), ch. 12.
A. Litnovsky, V. Voitsenya, T. Sugie, G. De Temmerman, A. E. Costley, A. J. H. Donné, K. Yu. Vukolov, I. Orlovskiy, J. N. Brooks, J. P. Allain, V. Kotov, A. Semerok, P.-Y. Thro, T. Akiyama, N. Yoshida, T. Tokunaga, and K. Kawahata, Nucl. Fusion, 49, No. 7: 075014 (2003).
A. Litnovsky, Yu. Krasikov, M. Rasinski, A. Kreter, Ch. Linsmeier, Ph. Mertens, B. Unterberg, U. Breuer, and T. Wegener, Fusion Eng. Design, 123: 674 (2017).
C. V. Funch and G. Proust, Additive Manuf., 94, No. 4: 104464 (2024).
V. Shapovalov, V. Yakusha, Yu. Nikitenko, I. Protokovilov, J. Khokhlova, and O. Hnizdylo, Metallofiz. Noveishie Tekhnol., 46, No. 10: 953 (2024).
J. Q. Shi, S. Y. Yao, F. Wang, X. D. Yu, H. T. Huang, C. W. Tan, Z. H. Nie, H. L. Ma, and H. N. Cai, Mater. Charact., 134, No. 12: 1 (2017).
L. Dittrich, P. Petersson, H. Laabadi, E. Pitthan, M. Rubel, A. Widdowson, A. Krawczyńska, K. Szlązak, and Ł. Ciupiński, Nucl. Mater. Energy, 37, No. 4: 101548 (2023).
A. Litnovsky, G. De Temmerman, K. Vukolov, P. Wienhold, V. Philipps, O. Schmitz, U. Samm, G. Sergienko, P. Oelhafen, M. Büttner, I. Orlovskiy, A. Yastrebkov, U. Breuer, and A. Scholl, Fusion Eng. Design, 82, No. 2: 123 (2007).
V. Shapovalov, J. Khokhlova, V. Yakusha, Yu. Nikitenko, M. Khokhlov, and O. Berdnikova, Int. J. Refract. Hard Met., 123, No. 6: 1067883 (2024).
D. G. Karpachev, E. D. Doron'kin, S. A. Tsukerman, M. V. Taubkin, A. I. Knyazeva, and L. I. Klestova, Tugoplavkie i Redkie Metally i Splavy [Refractory and Rare Metals and Alloys] (Moskva: Metallurgiya: 1977) (in Russian).
D. N. Klauch, Z. M. Fetistova, V. V. Alfutov, and E. G. Kaprillyants, Monokristally Tugoplavkikh i Redkikh Metallov, Splavov i Soedineniy [Single Crystals of Refractory and Rare Metals, Alloys and Compounds] (Ed. I. V. Tanaev) (Moskva: Nauka: 1977), p. 189 (in Russian).