Synthesis and Structural Characterization of Bulk and Nanoalloys of Ni-B Binary Systems

2018-10-27
Tekekaya, H Seçkin
Mekhrabov, Amdulla O.
Akdeniz, Mahmut Vedat
Initially, bulk Ni60B40 alloys were produced and presence of two Ni4B3 and Ni2B crystalline phases were detected by SEM-EDS, X-ray diffractometer and DSC analysis. After the completing of structural characterization of Ni60B40 bulk alloy, milling operation was carried out with Nickel and Boron powders up to 80 hours of milling time. In order to avoid oxidation during milling, the vials had been filled with Ar inert gas before milling started. Initial sub-micron sized particles have been reduced down to a size ranged in between 50 to 100 nm at the end of ball milling procedure. Structural analysis revealed that, after 40 hours of milling, Ni3B intermetallic phase starts to form in the Ni-B nanoalloys. Also, in terms of the particle size, it was found that the amount of nano-sized particles raised with increasing milling time. Magnetic properties of Ni60B40 nanoalloy powders have been measured by using vibratingsample magnetometer. Magnetic measurements indicated a general decrease in saturation magnetization and increase in coercivity with increasing milling time.
Citation Formats
H. S. Tekekaya, A. O. Mekhrabov, and M. V. Akdeniz, “Synthesis and Structural Characterization of Bulk and Nanoalloys of Ni-B Binary Systems,” İstanbul, Türkiye, 2018, p. 598, Accessed: 00, 2021. [Online]. Available: http://www1.metalurji.org.tr/immc2018/bildiriler_kitabi.pdf.