International Conference on

Minerals, Metallurgy and Materials

March 22-24, 2021 | Valencia, Spain

Nouha Siragi

Speaker for Materials 2020 Conference-Nouha Siragi
Nouha Siragi
University of Cadi Ayyad, Morocco
Title : Synthesis and characterization of Copper-doped forsterite as new blue ceramic pigments


In the field of ceramic pigments, one research trend is the exploration of new white matrixes that can serve as ceramic pigments by hosting different transition metals as chromophores. One example is Forsterite Mg2SiO4: This thermally and chemically stable matrix can offer a large pallet of colors when Mg is partially  substituted, in two inequivalent octahedral sites, for metals such as Co, Ni, Mn, Fe, Cu… In this work, we report on the potential use of Cu-doped Forsterite as new blue ceramic pigments.
Mg2-xCuxSiO4 solid solutions were successfully synthesized via a novel sol-gel method, and characterized using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and UV-Vis Diffuse Reflectance Spectroscopy (DRS), to investigate their crystalline structure, microstructure, and optical properties. The color of the pigments was characterized using the CIE l*a*b* color space. The obtained crystalline powders are of high purity for substitution rates up to 20%. They are light blue in color for x<15% turning green at higher substitution rates.

Audience Takeaway:

•    The audience of this presentation will be introduced to the important physical aspects governing the optical behavior of ceramic pigments.
•    This presentation will also shed some light on the beneficial use of Sol-Gel route in the synthesis of ceramic pigments.


Nouha received an engineering degree in “Process and Ceramic Materials Engineering” at the National School of Applied Sciences in Safi, University of Cadi Ayyad - Marrakech in 2015. She later joined the Laboratory of Materials Science at the Faculty of Sciences Semlalia of the same university as a PhD student, and is currently working on the elaboration, via Sol-gel route, and the characterization of new ceramic pigments.


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