Metallurgical Engineering

Metallurgical Engineering

Effect of sintering atmosphere and temperature on mechanical properties of Ni-Cu-Zn ferrite nanoparticles

Document Type : Research Paper

Author
Ahmad Gholizadeh
Assistant Professor, School of Physics, Damghan University (DU),
10.22076/me.2018.57049.1118
Abstract
Ferrites exhibits unique structural, electrical, magnetic and mechanical properties in extreme conditions that are of great research interest. In this work, the effects of sintering atmosphere and temperature on elastic moduli properties of Ni0.3Cu0.2Zn0.5Fe2O4 nanoparticles have been investigated. The elastic constants of the samples have been calculated by using the values of the structural parameters and also the vibration frequencies obtained from infrared spectra. The values of shear (VS) and longitudinal (Vl) wave velocities obtained from force constants have been used to determine the values of Young’s modulus (E), rigidity modulus (G), bulk modulus (B), Debye temperature (θD). By comparison of the elastic results of the studied samples, we can observe that the elastic moduli of the samples sintered under reducing atmosphere are higher than the other samples, whereas they have been improved with increase of sintering temperature under reducing atmosphere. In addition, using the values of the compliance sij obtained from elastic stiffness constants, the values of Young’s modulus E(hkl) and Poisson’s ratio σ(hkl,θ) along the oriented direction [hkl] have been calculated for the samples.
Keywords
Ni-Cu-Zn ferrite
Citrate -nitrate method
IR spectroscopy
Mechanical properties
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  • Receive Date 14 November 2017
  • Revise Date 11 January 2018
  • Accept Date 20 May 2018