AZCS refractories prepared from gels
| Autor: | Giancarlo Carturan, Alberto Tiziani, Massimo Guglielmi, V. Gottardi |
|---|---|
| Rok vydání: | 1981 |
| Předmět: |
Chromatography
Materials science Scanning electron microscope Formic acid Condensed Matter Physics Electronic Optical and Magnetic Materials chemistry.chemical_compound Tetragonal crystal system Hydrolysis chemistry Phase (matter) Materials Chemistry Ceramics and Composites Methanol Chemical composition Nuclear chemistry Solid solution |
| Zdroj: | Journal of Non-Crystalline Solids. 43:105-114 |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/0022-3093(81)90176-9 |
| Popis: | The material of chemical composition 1% Na2O, 28% Cr2O3, 28% Al2O3, 15% SiO2 and 28% ZrO2 was obtained by the gel route; this product is usually prepared by electrocasting and it is a well recognized refractory. The starting species dissolved in methanol/formic acid form the gel upon hydrolysis; this, on heating to 1500°C, forms a product of tetragonal and monocline ZrO2, ZrSiO4, Al2O3/Cr2O3 solid solution and vitreous phase. The evolution from gel to the final material was followed by X-ray analysis and DTA experiments: the separation and modification of the crystalline phases as a function of the temperature is demonstrated and discussed. Chemical analysis and scanning electron microscopy results allow a complete comparison to be made with the same composition obtained by electrocasting. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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