Study of the structural and dielectric properties of ceramic obtained from residual electrocoagulation
| Autor: | D. X. Gouveia, R. G. M. Oliveira, T. S. M. Fernandes, Marcelo Antônio Santos Da Silva, Antonio Sergio Bezerra Sombra, Ronaldo Ferreira do Nascimento |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Rietveld refinement medicine.medical_treatment 02 engineering and technology Activation energy Dielectric 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Capacitance Industrial and Manufacturing Engineering Electrocoagulation 0104 chemical sciences visual_art Ceramics and Composites visual_art.visual_art_medium medicine Ceramic Composite material 0210 nano-technology Ceramic capacitor Temperature coefficient |
| Zdroj: | Advances in Applied Ceramics. 117:395-405 |
| ISSN: | 1743-6761 1743-6753 |
| DOI: | 10.1080/17436753.2018.1462296 |
| Popis: | This work aims to develop an eco-friendly ceramic obtained from the sludge generated in the textile industry treatment by electrocoagulation to demonstrate a possibility of natural raw materials’ extraction decrease. The sludge generated by the electrocoagulation treatment was treated by some sintering processes. The presence of two crystalline phases was confirmed through the Rietveld refinement: Fe2O3 and NiCr2O4. In the microwave range it is possible to confirm the relative stability of dielectric permittivity over the wide frequency range. The Temperature Coefficient of Capacitance results demonstrate that the samples can be classified as a class 4 ceramic capacitor. The activation energy measurement profile is similar for all samples. The results showed that samples obtained from the sludge present low dielectric permittivity, two thermo-activated processes one to water loss and another to conduction with activation energy of approximately 0.6 eV for all analysed samples. The manufactured sam... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|