Effects of washing method of nickel slag to the structural properties of composite nickel slag/laterite soil for high electromagnetic wave absorption performance

Abstract

Laterite soil (LS) doped with nickel slag (NS) for different solvent was successfully use to enhance the microwave absorption properties. First, NS/LS-01 is laterite soil doped with nickel slag for washed by using hydrogen chloride and second, NS/LS-02 for nickel slag washed by using sodium chloride. All samples are prepared by milling method at low frequency (10 Hz). X-ray diffraction (XRD) result revealed that the as polycrystalline of a cubic phase and diffraction spectra were dominated by magnetite (Fe3O4). X-ray peak broadening was analyzed to evaluate the structural properties. The quantitative analysis of structural properties in this studies are Scherrer, Williamson-Hall and Size strain plot method. Crystallite size (D), micro strain (ε), stress (σ) and energy density (u) were extracted from the peak line broadening. NS/LS-02 shows the smallest volume lattice, the energy density and the best reflection loss (RL) from the vector network analyzer (VNA). It is reveals the unit cell with high energy density strong relationship with microwave properties. In this study easy method to find the best correlation between structural and microwave properties.