Corrosion Resistance of Amorphous Alloys Fe$_{82}$Nb$_2$B$_{14}$REM$_2$ (REM = Y, Gd, Tb, Dy) in NaCl Medium

M.-O. M. Danyliak$^{1}$, L. M. Boichyshyn$^{2}$

$^{1}$G. V. Karpenko Physico-Mechanical Institute, NAS of Ukraine, 5 Naukova Str., UA-79060 Lviv, Ukraine
$^{2}$Ivan Franko National University of Lviv, 1 Universytets’ka Str., UA-79000 Lviv, Ukraine

Received: 13.08.2019; final version - 31.03.2020. Download: PDF

The corrosion resistance of the amorphous metallic alloys (AMAs) of Fe$_{82}$Nb$_2$B$_{14}$REM$_2$ (REM = Y, Gd, Tb, Dy) in 0.05 M NaCl solution is estimated by cyclic voltammetry. As found, the 2 at.% rare-earth metal (REM) alloying of the alloys promotes corrosion resistance. The surface morphology of the AMAs samples is investigated by scanning electron microscopy method. As shown, a treatment by solution of fluoric acid changes the AMAs surface. As established, the chemical etching by fluoric acid, as well as a fivefold scan of the potential leads to the formation of new protective oxide-hydroxide layers, which cause an increase corrosion resistance. In particular, the content of Y in the surface layers after interaction with the solution of fluoric acid compared to other doped alloys is the highest.

Key words: amorphous metallic alloys, rare-earth metals, corrosion resistance, morphology.

URL: http://mfint.imp.kiev.ua/en/abstract/v42/i07/0977.html

DOI: https://doi.org/10.15407/mfint.42.07.0977

PACS: 61.43.Dq, 68.37.Hk, 68.47.De, 81.65.Cf, 81.65.Kn, 81.65.Rv

Citation: M.-O. M. Danyliak and L. M. Boichyshyn, Corrosion Resistance of Amorphous Alloys Fe$_{82}$Nb$_2$B$_{14}$REM$_2$ (REM = Y, Gd, Tb, Dy) in NaCl Medium, Metallofiz. Noveishie Tekhnol., 42, No. 7: 977—987 (2020) (in Ukrainian)


REFERENCES
  1. H. Xia, Q. Chen, and Ch. Wang, J. Rare Earths, 35: 406 (2017). Crossref
  2. W. J. Botta, J. E. Berger, C. S. Kiminami, V. Roche, R. P. Nogueira, and C. Bolfarini, J. Alloys Compd., 586: S105 (2013). Crossref
  3. M. M. Vasić, T. Žák, N. Pizúrová, P. Roupcová, D. M. Minić, and D. M. Minić, J. Non-Cryst. Solids, 500: 326 (2018). Crossref
  4. D. D. Coimbrão, G. G. Zepon, Y. Koga, F. H. Paes de Almeida, D. A. Godoy Pérez, V. Roche, J.-C. Lepretre, A. M. Jorge Jr., C. S. Kiminami, C. Bolfarini, A. Inoue, and W. J. Botta, J. Alloys Compd., 826: 154123 (2020). Crossref
  5. L. Boychyshyn, M.-O. Danylyak, and V. Andrusyk, Visnyk Lvivskoho Universytetu. Seriya Khimichna, 59: 491 (2018) (in Ukrainian).
  6. R. Wang, Y. Wang, J. Yang, J. Sun, and L. Xiong ,J. Non-Cryst. Solids, 411: 45 (2015). Crossref
  7. A. Inoue, Acta Mater., 48: 279 (2000). Crossref
  8. A. P. Wang, X. C. Chang, W. L. Hou, and J. Q. Wang, Corros. Sci., 49: 2628 (2007). Crossref
  9. J.-L. Gu, Y. Shao, Sh.-F. Zhao, S.-Y. Lu, G.-N. Yang, Sh.-Q. Chen, and K.-Fu. Yao, J. Alloys Compd., 725: 573 (2017). Crossref
  10. Sh. Zheng, J. Li, J. Zhang, K. Jiang, X. Liu, Ch. Chang, and X. Wang, J. Non-Cryst. Solids, 493: 33 (2018). Crossref
  11. G. Y. Koga, R. P. Nogueira, V. Roche, A. R. Yavari, A. K. Melle, J. Gallegod, C. Bolfarini, C. S. Kiminami, and W. J. Botta, Surf. Coat. Tech., 254: 238 (2014). Crossref
  12. C. A. C. Souza, M. F. Oliveira, J. E. May, W. J. Botta, N. A. Mariano, S. E. Kuri, and C. S. Kiminami, J. Non-Cryst. Solids, 273: 282 (2000). Crossref
  13. C. S. Kiminami, C. A. C. Souza, L. F. Bonavina, L. R. P. A. Lima, S. Suriñach, M. D. Baró, C. Bolfariniand, and W. J. Botta, J. Non-Cryst. Solids, 356: 2651 (2010). Crossref
  14. J. Moonand and S. Yi, Met. Mater. Int., 22: 825 (2016). Crossref
  15. J.-S. Park, J. Kim, and S.-H. Yi, Ann. Nucl. Energy, 109: 365 (2017). Crossref
  16. O. Hertsyk, L. Boychyshyn, M. Kovbuz, and B. Kotur, Visnyk Lvivskoho Universytetu. Seriya Khimichna, 54: 383 (2013) (in Ukrainian).
  17. X. H. Zhang, Y. Q. Zeng, L. Yin, J. Q. Jiang, Y. Pan, R. Li, L. Liu, T. Li, and K. C. Chan, Corros. Sci., 141: 109 (2018). Crossref
  18. V. K. Nosenko, Visnyk Natsionalnoi Akademii Nauk Ukrainy, 4: 68 (2015) (in Ukrainian).
  19. Zh. Xu, Y. Xu, A. Zhang, J. Wang, and Z. Wang, J. Mater. Sci. Technol., 34: 1977 (2018). Crossref
  20. R. R. Salem, Teoriya Dvoynogo Sloya [Double Layer Theory] (Moscow: Fizmatlit: 2003) (in Russian).
  21. N. S. Akhmetov, Obshchaya i Neorganicheskaya Khimiya [General and Inorganic Chemistry] (Moscow: Vysshaya Shkola: 2001) (in Russian).