Cobalt Boride (Co2B) Particle Synthesis by One-step Carbothermic Reduction

Authors : Levent KARTAL

Pages : 229-235

Doi:10.17350/HJSE19030000311

View : 44 | Download : 39

Publication Date : 2023-09-30

Article Type : Research Paper

Abstract :In this study, crystalline Co2B powder production was carried out by a one-step carbothermal reduction method starting from cheap, easily accessible oxide-based materials. Firstly, to determine the carbothermic CoxB formation conditions, the decomposition temperatures of the raw materials were analysed by TG/DTA, and the temperature-varying Gibbs free energies of the expected reactions were calculated. Then, Co2B production was carried out at constant CoO/B2O3/C insert ignore into journalissuearticles values(3.22/1.5/1.3); weight ratios at temperature insert ignore into journalissuearticles values(1273-1473 K); and time insert ignore into journalissuearticles values(30-270 min);. scanning electron microscopy insert ignore into journalissuearticles values(SEM);, X-ray diffraction insert ignore into journalissuearticles values(XRD);, and vibrating sample magnetometer insert ignore into journalissuearticles values(VSM); were used to characterize the particles. XRD results showed that reaction temperature and time are the primary control on CoxB formation. Single-phase crystalline Co2B particles with crystallite sizes of 88 nm were successfully produced at 1473 K and 150 min. The permanent magnetization, saturation magnetization, and coercivity values of Co2B particles were defined as 16.58 Oe, 35.361 emu/g, 0.501 emu/g, respectively
Keywords : cobalt boride, cobalt, carbothermic reduction