| Autor: |
Cerem Piskin, Levent Karacasulu, Mauro Bortolotti, Cekdar Vakifahmetoglu |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Open Ceramics, Vol 7, Iss , Pp 100159- (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2666-5395 |
| DOI: |
10.1016/j.oceram.2021.100159 |
| Popis: |
KxNa1-xNbO3 (0 0.5) was obtained from 8 M total hydroxide concentration after 6 h of reaction at 200 °C. Rietveld refinement of the XRD data revealed that all samples exhibited the secondary NaNbO3 phase. However, the lowest amount (3.74 vol%) was obtained for 24 h of reaction under 10 M alkaline solution. After 3 h of reaction, dodecahedra shaped hexaniobate phase (KxNa8-xNb6O19.nH2O) was observed. Those structures were, subsequently, replaced by ~3 μm cube shaped KNN crystals, obtained under 10 M reaction in 24 h time period. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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