The Paton Welding Journal, 2023, №05



2023 №05 (06)

DOI of Article 10.37434/tpwj2023.05.07

2023 №05 (08)

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The Paton Welding Journal, 2023, #5, 42-47 pages

3D technology of growing single-crystal ingots in the form of hollow tungsten cylinders

Yu.O. Nykytenko, V.O. Shapovalov, V.V. Yakusha, O.M. Gnizdylo, O.V. Karuskevych

E.O. Paton Electric Welding Institute of the NASU.. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: nikyu80@gmail.com

Abstract
The paper presents the results of further development of the technology of growing superlarge single-crystals of refractory metals, developed at PWI of the NAS of Ukraine. Proceeding from the optimized technology and acquired experience, new generation equipment was manufactured, which allows growing single-crystals of refractory alloys in the form of the body of revolution. Experiments were performed on growing tungsten single-crystals in the form of a hollow cylinder, which can be used to manufacture such a product as a crucible. Technological parameters and energy modes were established, which allowed controlling the thickness of the wall being deposited. An ingot with the deposited wall height of 68 mm, thickness of 20…22 mm and outer diameter of 85 mm was grown as a result of the experiments. 9 Ref., 1 Table, 9 Figures.
Keywords: tungsten, single-crystal growing, hollow body of revolution, crucible, plasma-induction zone melting

Received: 01.03.2023
Accepted: 29.06.2023

References

1. Winsch, I.O., Kyle, M.L., Pierce, R.D., Burris, Jr.L. (1967) Tungsten crucibles in pyrochemical processing of nuclear fuels. Nuclear Applications, 3(4), 245-251. https://doi.org/10.13182/NT67-A27764
2. Junhyuk Jang, Seungyoub Han, Tack-Jin Kim et al. (2019) Stability of tungsten crucible against uranium, rare earth, cadmium, and chlorides for cathode process in pyroprocessing. Sci. and Technol. of Nuclear Installations, 31 July, 1-7. https://doi.org/10.1155/2019/4121285
3. Kofanov, D., Gerasymov, Ia., Sidletskiy, O. et al. (2022) Lu-AG:Ce and LuYAG:Ce scintillation crystals grown under reducing conditions from W crucibles. Optical Materials, 134, Pt A, 113176. https://doi.org/10.1016/j.optmat.2022.113176
4. Takahiro Suda, Yuui Yokota, Takahiko Horiai et al. (2022) Crystal growth of La2Hf2O7 by micro-pulling-down method using W crucible. J. of Crystal Growth, 583(1), 126547. https://doi.org/10.1016/j.jcrysgro.2022.126547
5. Savitsky, E., Burkhanov, G., Kirillova, V. (1982) Single crystals of refractory and rare metals, alloys, and compounds. Analytical methods high-melting metals. Springer-Verlag, 107-148. https://doi.org/10.1007/978-3-642-68731-0
6. Shapovalov, V.A., Yakusha, V.V., Gnizdylo, A.N., Nikitenko, Yu.A. (2016) Application of additivetechnologies for growing large profiled single crystals of tungsten and molybdenum. The Paton Welding J., 5-6, 134-136. https://doi.org/10.15407/tpwj2016.06.23
7. Shapovalov, V.O., Gnizdylo, O.M., Yakusha, V.V. et al. (2022) Intensification of the process of plasma-induction growing of large profiled tungsten single crystals. PAST, 137(1), 40-45. https://doi.org/10.46813/2022-137-040
8. Shapovalov, V.O., Nikitenko, Yu.O., Yakusha, V.V. et al. (2020) Manufacture of super large tungsten single crystals in the form of rotation bodies. Ibid., 125(1), 60-63. https://doi.org/10.46813/2020-125-060
9. Shapovalov, V.O., Nykytenko, Yu.O., Gnizdylo, O.M. et al. (2022) Investigation of energy balance in the system of the crystal-high-frequency heating module at plasma-induction growing of refractory metal single-crystals. Suchasna Elektrometal., 4, 27-33 [in Ukrainian]. https://doi.org/10.37434/sem2022.04.05

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Suggested Citation

Yu.O. Nykytenko, V.O. Shapovalov, V.V. Yakusha, O.M. Gnizdylo, O.V. Karuskevych (2023) 3D technology of growing single-crystal ingots in the form of hollow tungsten cylinders. The Paton Welding J., 05, 42-47.

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