Synthesis of Ceramic Pigments ACr2O4 Using the Non-Conventional Method of Co-Precipitation Assisted by Ultrasound and High Energy Milling
| Autor: | Oscar Jaime Restrepo Baena, Leidy Johana Jaramillo Nieves, Jorge Iván Tobón |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Materials science
medicine.diagnostic_test Coprecipitation Scanning electron microscope Spinel Mineralogy chemistry.chemical_element Zinc engineering.material Chromium chemistry Chemical engineering Spectrophotometry visual_art medicine engineering visual_art.visual_art_medium sense organs Ceramic Stoichiometry |
| Zdroj: | Open Journal of Inorganic Non-metallic Materials. :54-63 |
| ISSN: | 2164-6805 2164-6791 |
| DOI: | 10.4236/ojinm.2014.44008 |
| Popis: | In this research ceramic pigments have been synthesized with crystalline spinel structure and chromium based with a stoichiometry ACr2O4. A was an element with +2 valence metal, in this case, metals were zinc and iron, these pigments have been synthesized by non-conventional methods like the co-precipitation assisted by ultrasound and high milling energy. Pigments were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), spectrophotometry, and colorimetric CIELab method. Results showed that it was possible to obtain a crystallin desired structure at temperatures below 900°C by non-conventional methods. These results showed the advantages of ceramic pigments obtained by alternative routes, because it was possible to have a better control over stoichiometry and colorimetric structure properties. Furthermore, they were obtained at temperatures lower than those used by the traditional ceramic route. |
| Databáze: | OpenAIRE |
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