Abstract
Using the coprecipitation method of metal hydroxides, magnesium ferrite-chromites of the system Mg(FexCr2-x)O4 were synthesized, and a comparative analysis of crystal-chemical parameters of the obtained samples with similar samples, made through the solid state technology was performed. The precipitation method provides high dispersion, lower sintering temperature and more even distribution of components in the sintered ferrite. It was found that in samples, synthesized through the hydroxide coprecipitation method, the value of lattice constant is greater and reversibility degree is lower compared with samples synthesized through the solid state technology. The formation of magnesium ferrite-chromites from coprecipitated hydroxides is completed at temperatures 500-700 ºC lower than with the standard solid state technology using oxides. The dimensions of the crystallites in the samples obtained through the hydroxide coprecipitation method are within 50-130 nm and are smaller than samples, obtained through the solid state technology (200-400 nm). The changes in dispersion and ionicity degree of the chemical bond, depending on the composition and synthesis method were monitored. The obtained results demonstrate the possibility of synthesis through the hydroxide precipitation of ferrites of the system Mg-Fe-Cr and allow to predict their crystal-chemical parameters.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Eastern-European Journal of Enterprise Technologies
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.