Pereparation and Characterization of(Co-Si-Mg)Al۲O۴Spinel:New Bluepigment

Oxide spinels comprise a large group of structurally related compounds, many of which areof considerable technological significance. Aluminate spinels are of interest due to theirtechnological applications as catalysts, refractories and pigments. Ceramic pigments are widelyused in the ceramics industry as coloring agents in glazes for floor or wall whitewares and for thebulk coloration of polished, unglazed and porcelainized stoneware[۱].The synthesis of cobaltbasedceramic pigments must be optimized in order to minimize the production costs andenvironmental impact of the manufacturing process of thesepigments.In this work, nanoparticles of (Co-Si-Mg)Al۲O۴was prepared by the method of mixing metaloxides and was characterized by XRF, XRD, SEM and thermal analyses. The results show thatthe (Co-Si-Mg)Al۲O۴ system, has spilnel structure and a blue color with particles sizes about۹۰-۶۸۰ nm.The color properties and the high thermal stability of this nanostructure suggest that ithas the potential to be applied as satisfactory ceramic pigments.

کلیدواژه ها:

Oxide spinels ، Ceramic pigments ، (Co-Si-Mg)Al۲O۴ ، Blue color