Effect of Stoichiometry and Sintering Temperature on the Mechanical Properties of Zinc Ferrite (Zn_xFe_3-xO₄)

Abstract

The composites sample of Zinc Ferrite (ZnxFe3-xO4) were prepared by mixing zinc oxide (ZnO) and iron oxide (Fe2O3) via different stoichiometry (ratio) with ZnxFe3-xO4, for x= 0,0.2,0.4,0.6,0.8 and sintering temperature at 1000 °C, 1100 °C,1200 °C for six hours. The phase compositions of the synthesized Zinc Ferrite (ZF) were verified using X-ray Diffraction (XRD), hardness testing using hardness Vickers, density and thermal conductivity for composite was studied. The result shows the sample with ratio 0.8 and 1200 oC sintering temperature gives the highest value of thermal conductivity with 9.7614 W/m2K and the lowest thermal resistance with 0.1024 m2K / W.

Thermal Decomposition Pathways of ZnxFe3–xO4 Nanoparticles in Different Atmospheres

“…In the temperature range from ∼500 °C to ∼900–1000 °C, there was practically no decrease in mass (TG, x Zn = 1 and 0.35), and the endothermic peak appearing in this area was associated with the beginning of the process , of secondary growth of nanoparticles (DSC curve, Figure ). In the range from ∼1000 °C to 1170 °C, the course of TG curves for all x Zn differed.…”