Magnesiothermic reduction of rice husk ash for electromagnetic wave adsorption
| Autor: | Kang-Kang Yan, Xue-Gang Chen, Liu Shuting, Yuan hu Zhang, Ying Ye, Shi-di Jin |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Pollution
Materials science media_common.quotation_subject Metallurgy chemistry.chemical_element Dielectric Condensed Matter Physics Nitrogen Husk Electromagnetic radiation Electronic Optical and Magnetic Materials chemistry.chemical_compound Adsorption chemistry Silicon carbide Dielectric loss media_common |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 394:266-273 |
| ISSN: | 0304-8853 |
| Popis: | The increase in electromagnetic pollution due to the extensive exploitation of electromagnetic (EM) waves in modern technology creates correspondingly urgent need for developing effective EM wave absorbers. In this study, we carried out the magnesiothermic reduced the rice husk ash under different temperatures (400–800 °C) and investigated the electromagnetic wave adsorption of the products. The EM absorbing for all samples are mainly depend on the dielectric loss, which is ascribed to the carbon and silicon carbide content. RA samples (raw rice husk ashed in air and was magesiothermic reduced in different temperatures) exhibit poor dielectric properties, whereas RN samples (raw rice husk ashed in nitrogen and was magesiothermic reduced in different temperatures) with higher content of carbon and silicon carbide display considerable higher dielectric loss values and broader bandwidth for RL |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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