Effect of MCl (M = Na, K) addition on microstructure and electrical conductivity of forsterite

Abstract

Forsterite single phase powder Mg2SiO4 was synthesized by sol-gel method alongside with heat treatment, using two different cations alkaline salts MCl as mineralizers (M=Na, K) with various mass percentages (2.5, 5, 7.5, and 10wt %). In this work we report on the effect of the cation type and the added amount of used mineralizer on microstructure and electrical conductivity of Mg2SiO4. The formation of forsterite started at 680-740°C and at 630°C–700°C with KCl and NaCl respectively, as shown by TG-DTA and confirmed by XRD. Furthermore, the Fourier transform infrared (FTIR) absorption spectra indicated bands vibrations of forsterite structure. The morphology and elemental composition of sintered ceramics were examined by SEM-EDX analyses, while their densities were measured by Archimedes method which increased with addition of both alkaline salts. The electrical measurements were performed by Complex Impedance Spectroscopy and the results showed that electrical conductivity increased with the addition of both mineralizers, which was higher for samples prepared with NaCl than those prepared with KCl.
 

Advanced materials for energy harvesting, storage, sensing and environmental engineering II

“…This Topical issue to the European Physical Journal À Applied Physics on Materials for Energy Harvesting, Storage, Sensing and Environmental Engineering intends to dress an updated and equilibrated picture of the multidisciplinary connections between energy and man-agement, as previous issues did [10][11][12][13]. This year's issue covers multidisciplinary areas of applied research into which Physics has a say: energy transfer, conversion and storage [14][15][16][17], fluid mechanics and microfluidics [18,19], materials [20][21][22]. Modelling and simulation complement the issue by providing understanding and prediction to experimental situations, with various approaches at multiple scales: nano, micro, meso and macroscopic [23][24][25][26][27].…”

“…Dans ce sens, l'activité scientifique a massivement bénéficié cette année de sa production passée et présente en termes de [10][11][12][13]. Le numéro de cette année couvre des domaines multidisciplinaires de recherche appliquée dans lesquels la physique a son mot à dire: transfert, conversion et stockage d'énergie [14][15][16][17], mécanique des fluides et microfluidique [18,19], matériaux [20][21][22]. La modélisation et la simulation complètent la problématique en permettant de comprendre et de prédire les situations expérimentales, avec différentes approches à plusieurs échelles: nano, micro, méso et macroscopique [23][24][25][26][27].…”