Investigation of the structural and magnetic properties of Fe70Ti10B20 (at.%) alloys by mechanical alloying

Öz

In this study, amorphous/nanocrystalline Fe₇₀Ti₁₀B₂₀ (at.%) alloys were synthesized by using elemental Fe, Ti and B powders under argon gas atmosphere via mechanical alloying method. The powders were ball milled at 20:1 ball-to-powder ratio and 500 rpm rotating speed up to 70 h. The phase and morphological properties of the synthesized powders were examined by using X-Ray diffractometer and scanning electron microscope with energy-dispersive X-ray spectroscope (SEM/EDX). The magnetic properties of powders were determined by vibrating sample magnetometer (VSM) at room temperature in the range of 0-20 kOe. It is determined that after 2.5 h of milling, Ti and B are started to dissolve in Fe lattice and Fe(TiB) solid solutions formed. XRD analysis revealed that the amorphous structures were formed after 30h of milling and the crystallite size and lattice strain were found ~ 8.2 nm and 1.16%, respectively. SEM images indicated that the particles were mostly agglomerated and the particles size distribution was in the range of 10-48 μm. Magnetic measurements revealed that after 70 h of milling, the saturation magnetization (M_s) and the coercivity (H_c) was about 94 emu/g and 117 Oe.

Anahtar Kelimeler

• Mechanical alloying,nanoparticles,magnetic properties,amorphous alloys

Kaynakça

1. [1] Suryanarayana C., Mechanical alloying and milling, Prog. Mater. Sci., 46, 1–184, 2001.
2. [2] Avar B., Simsek T., Gogebakan M., Mekanik alaşımlama ile üretilen Nanokristal Fe60Al30Cu10 (at.%) tozların yapısal ve mekanik özellikleri, G.U. J. Sci. Part C, 7 (1) 184-191, 2019.
3. [3] Koch C. C., Cavin O. B., Mckamey C. G., Scarborough J. O., Preparation of “amorphous” Ni60Nb40 by mechanical alloying, Appl. Phys. Lett., 43, 1017–1019, 1983.
4. [4] Avar B., Structural, thermal and magnetic characterization of nanocrystalline Co65Ti25W5B5 powders prepared by mechanical alloying, J. Non-Cryst. Solids., 432, 246–253, 2016.
5. [5] Şimşek T., Şimşek T., Ozcan T., Synthesis and characterization of Mn2B nanocrystals by mechanical alloying method, Boron, 4 , 25-30, 2019.
6. [6] Birringer R., Nanocrystalline materials, Mater. Sci. Eng. A., 117, 33-43, 1989.
7. [7] Simsek T., Pure YbB6 nanocrystals: First time synthesis via mechanochemical method, Adv. Powder Technol., 30, 1219–1225, 2019.
8. [8] Zawrah M., Shaw L., Microstructure and hardness of nanostructured Al–Fe–Cr–Ti alloys through mechanical alloying, Mater. Sci. Eng. A.,, 355, 37-49, 2003.

9. [9] Krifa M., Mhadhbi M., Escoda L., Güell J. M., Sunnol J. J., Isern N. L., Guzmaan C. A., Khitouni M., Nanocrystalline (Fe 60 Al 40 ) 80 Cu 20 alloy prepared by mechanical alloying, J. Alloys Compd., 554, 51–58, 2013.
10. [10] Bahrami A. H., Ghayour H., Sharafi S., Evolution of microstructural and magnetic properties of mechanically alloyed Fe 80−x Ni 20 Si x nanostructured powders, Powder Technol., 249 7–14, 2013.
11. [11] Sharifati A., Sharafi S., Structure and magnetic properties of mechanically alloyed (Fe 70 Co 30 ) 91 Cu 9 powder, Mater. Design., 36, 35–40, 2012.
12. [12] McHenry M. E., Willard M. A., Laughlin D. E., Amorphous and nanocrystalline materials for applications as soft magnets, Prog. Mater. Sci., 44, 291-433, 1999.
13. [13] Yoshizawa Y., Yamauchi K., Yamane T., Sugihara H., Common mode choke cores using the new Fe based alloys composed of ultrafine grain structure, J. Appl Phys., 64, 6044, 1988.
14. [14] Shokrollahi H., The magnetic and structural properties of the most important alloys of iron produced by mechanical alloying, Mater. Design., 30, 3374–3387, 2009.
15. [15] Jiles D., Introduction to Magnetism and Magnetic Materials, Chapman & Hall, London, 280–297, 1991.
16. [16] Cullity B. D., Graham C. D., Introduction to Magnetic Materials, seconded, Wiley-IEEE Press, New Jersey, 2009.
17. [17] Baghbaderani H. A., Sharafi S., Chermahini M. D., Investigation of nanostructure formation mechanism and magnetic properties in Fe45Co45Ni10 system synthesized by mechanical alloying, Powder Technol., 230, 241–246, 2012.
18. [18] Yousefi M., Sharafi S., Mehrolhosseiny A., Correlation between structural parameters and magnetic properties of ball milled nano-crystalline Fe–Co–Si powders, Adv. Powder Technol., 25, 752–760, 2014.
19. [19] Younes A., Dilmi N., Khorchef M., Bouamer A., Bacha N. E., Zergoug M., Structural and magnetic properties of FeCuNi nanostructured produced by mechanical alloying, Appl. Surf. Sci., 446, 258-265, 2018.
20. [20] Alleg S., Ibrir M., Fenineche N. E., Azzaza S., Bensalem R., Sunol J. J., Magnetic and structural characterization of the mechanically alloyed Fe75Si15B10 powders, J. Alloys Compd., 494, 109–11, 2010.
21. [21] Ipus J. J., Blaazquez J. S., Franco V., Conde A., The use of amorphous boron powder enhances mechanical alloying in soft magnetic FeNbB alloy: A magnetic study, J. Appl Phys., 113-115, 2013.
22. [22] Okumura H., Ishirara K. N., Shingu P. H., Park H. S., Mechanical alloying of Fe-B alloys, J. Mater. Sci., 27, 153-160, 1992.
23. [23] Abbasi S., Eslamizadeh H., Raanaei H., Study of synthesis, structural and magnetic properties of nanostructured (Fe67Ni33)70Ti10B20 alloy, J. Magn. Magn. Mater., 451, 780–786, 2018.
24. [24] Lashgari H. R., Chu D., Xie S., Sun H., Ferry M., Li S., Composition dependence of the microstructure and soft magnetic properties of Fe-based amorphous/ nanocrystalline alloys: A review study, J. Non-Cryst. Solids., 391, 61–82, 2014.
25. [25] Lu Z. P., Liu C. T., Thomepson J. R., Porter W. D., Structural Amorphous Steels, Phys. Rev. Lett., 92 (24), 245503, 2004.
26. [26] Shen J., Chen Q., Sun J., Fan H., Wang G., Exceptionally high glass-forming ability of an FeCoCrMoCBY alloy, Appl. Phys. Lett., 86, 151907, 2005.
27. [27] El-Eskandarany M. S., Zhang W., Inoue A., Glassforming ability and magnetic properties of mechanically solid-state reacted Co100-xTix alloy powders, J. Alloys Compd., 350, 232–245, 2003.
28. [28] Raanaei H., Hosseini V. M., Morphology and magnetic behavior of cobalt rich amorphous/ nanocrystalline (Co–Ni)70Ti10B20 alloyed powders, J. Magn. Magn. Mater., 414, 90–96, 2016.
29. [29] Williamson G. K., Hall W. H., X-ray line broadening from filed aluminium and wolfram, Acta Metall., 1, 22– 31, 1953.
30. [30] Raanaei, H., Fakhraee, M., Synthesis and characterization of nanocrystalline Co-Fe-Nb- Ta-B alloy, J. Magn. Magn. Mater., 438, 144-151, 2017.
31. [31] Avar B., Nanokristal Co70Si15B15 Toz alaşımların yapısal, termal ve manyetik özelliklerinin ı̇ncelenmesi, SDÜ Fen Bil. Enst. Der., 23, 83-89, 2019.
32. [32] Karimi L., Shokrollahi H., Structural, microstructural and magnetic properties of amorphous/nanocrystalline Ni63Fe13Mo4Nb20 powders prepared by mechanical alloying, J. Alloys Compd., 509, 6571–6577, 2011.
33. [33] Koohkan R., Sharafi S., Shokrollahi H., Janghorban K., Preparation of nanocrystalline Fe–Ni powders by mechanical alloying used in soft magnetic composites, J. Magn. Magn. Mater., 320, 1089–1094, 2008.
34. [34] Khaneghahi S. F., Sharafi S., Magnetic and structural properties of nanostructured (Fe65Co35)100-xCrx (x = 0, 10) powders prepared by mechanical alloying process, Adv. Powder Technol., 25, 211–218, 2014.
35. [35] Shokrollahi H., Chermahini M. D., Zandrahimi M., Sharafi S., The effect of milling time and composition on microstructural and magnetic properties of nanostructured Fe–Co alloys, J. Alloys Compd., 477, 45– 50, 2009