Crystallization of M2SiO4 (M = Ni, Co) olivine solid solutions from Na2CoxNi1-xSi4O10 (0.0 ≤ x ≤ 1.0) compositions
The crystallization of olivine solid solutions from Na2CoxNi1-xSi4O10 (0.0 ≤ x ≤ 1.0) compositions, synthesized via the chemical co-precipitation method, was studied. These materials enable a gradation of the green to blue coloration in both powdered and enamelled forms. The presence of additional c...
| Autores: | , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/411958 |
| Acceso en línea: | http://hdl.handle.net/10261/411958 |
| Access Level: | acceso abierto |
| Palabra clave: | Olivine Pigments Solid solutions |
| Sumario: | The crystallization of olivine solid solutions from Na2CoxNi1-xSi4O10 (0.0 ≤ x ≤ 1.0) compositions, synthesized via the chemical co-precipitation method, was studied. These materials enable a gradation of the green to blue coloration in both powdered and enamelled forms. The presence of additional crystalline phases alongside these olivine solid solutions at 1000 and 1200 °C does not decrease the intensity of the colour. This allows a reduction in the amount of Ni(II) and Co(II) in the compositions. The crystallization of olivine begins at 800 °C in a pink phase with 0.4 ≤ x ≤ 0.8 in compositions. Its spectra can be interpreted as the effect of combining the colour contributions of Ni(II) and Co(II) ions in octahedral sites. At 1000 and 1200 °C, compositions with x > 0.2 exhibit a blue colour, and an additional spectral band attributed to Co(II) ions in tetrahedral coordination is observed. |
|---|