Features of the Structural Formation of Tungsten Single Crystals in the Shape of Hollow Rotational Bodies

Abstract:

The results of the development of the technology for growing super-large single crystals of refractory metals, which were developed at the E.O. Paton Electric Welding Institute of the NAS of Ukraine. Based on proven technology and acquired skills, a new generation of equipment was created that allows the growth of single crystals of refractory alloys in the form of bodies of rotation. Experiments were conducted on growing a single crystal of tungsten in the form of a hollow cylinder, from which it is possible to make such a product as a crucible. Technological parameters and energy regimes were established, which allowed for control of the thickness of the wall to be welded. As a result of the experiments, an ingot with a welded wall height of 68 mm, a thickness of 20–22 mm, and an outer diameter of 85 mm was grown. The structure of the obtained samples was studied.

• Periodical: Materials Science Forum (Volume 1113)
• Pages: 101-108
• DOI: https://doi.org/10.4028/p-SDyx6A
• Online since: February 2024
• Authors: Yuriy Nikitenko*, Viktor Shapovalov, Volodymyr Yakusha, Oleksandr Gnizdylo, Olena M. Berdnikova
• Keywords: Crucible, Hollow Body of Rotation, Metal Single Crystal, Plasma Induction Zone Melting, Tungsten

References

[1] Winsch I.O., Kyle M.L., Pierce R.D. & Burris Jr. L. Tungsten Crucibles in Pyrochemical Processing of Nuclear Fuels. Nuclear Applications, Vol.3(4) (1967), pp.245-251.

DOI: 10.13182/nt67-a27764

[2] Junhyuk Jang, Seungyoub Han, Tack-Jin Kim, Gha-Young Kim, Chang Hwa Lee, Sung-Jai Lee, "Stability of Tungsten Crucible against Uranium, Rare Earth, Cadmium, and Chlorides for Cathode Process in Pyroprocessing", Science and Technology of Nuclear Installations, Article ID 4121285, (2019), 7 pages.

DOI: 10.1155/2019/4121285

[3] D. Kofanov, Ia. Gerasymov, O. Sidletskiy, S. Tkachenko, Ya. Boyaryntseva, D. Kurtsev, O. Zelenskaya, O. Okrushko, T. Gorbacheva, O. Viagin, P. Maksimchuk, K. Lebbouc. LuAG:Ce and LuYAG:Ce scintillation crystals grown under reducing conditions from W crucibles. Optical Materials, 134, Part A, (2022), 113176.

DOI: 10.1016/j.optmat.2022.113176

[4] Takahiro Suda, Yuui Yokota, Takahiko Horiai, Akihiro Yamaji, Masao Yoshino, Takashi Hanada, Hiroki Sato, Satoshi Toyoda, Yuji Ohashia, Shunsuke Kurosawa, Kei Kamada, Akira Yoshikawa. Crystal growth of La2Hf2O7 by micro-pulling-down method using W crucible. Author links open overlay panel Journal of Crystal Growth.Volume 583(1), (2022), 126547.

DOI: 10.1016/j.jcrysgro.2022.126547

[5] Lisong Zhang, Xiaonan Zhang, Na Li, Peng Zhang, Xianxiu Mei, Younian Wang and Vladimir V. Uglov. Experimental and simulation studies on damage mechanisms of tungsten and molybdenum under compressed plasma flow irradiation. Nucl. Fusion 63 (2023) 076010.

DOI: 10.1088/1741-4326/acd016

[6] E. Savitsky, G. Burkhanov, V. Kirillova. Single Crystals of Refractory and Rare Metals, Alloys, and Compounds. Analytical Methods High-Melting Metals. Springer-Verlag (1982) рp. 107-148.

DOI: 10.1007/978-3-642-68731-0_4

[7] Shapovalov V.A., Yakusha V.V., Gnizdylo A.N. and Nikitenko Yu.A. Application of additive technologies for growing large profiled single crystals of tungsten and molybdenum // Avtomaticheskaya Svarka (Automatic Welding), 6 (2016), pp.145-147.

DOI: 10.15407/tpwj2016.06.23

[8] V.O. Shapovalov, O.M. Gnizdylo, V.V. Yakusha, Yu.O. Nikitenko, E.M. Berdnikova, J.A. Khohlova. Intensification of the process of plasma-induction growing of large profiled tungsten single crystals. Problems of Atomic Science and Technology.. №1 [137] (2022) pp.40-45.

DOI: 10.46813/2022-137-040

[9] V.O. Shapovalov, Yu.O. Nikitenko, V.V. Yakusha, O.M. Gnizdylo, I.V. Sheiko. Manufacture of super large tungsten single crystals in the form of rotation bodies. Problems of Atomic Science and Technology. №1 [125] (2020), pp.60-63.

DOI: 10.46813/2020-125-060