Szczegóły publikacji
Opis bibliograficzny
Synthesis and hydration behaviour of calcium zirconium aluminate powders by modifying co-precipitation method / Dominika MADEJ, Maria RAJSKA, Andrzej Kruk // Ceramics International ; ISSN 0272-8842. — Tytuł poprz.: Ceramurgia International ; ISSN: 0390-5519. — 2020 — vol. 46 iss. 2, s. 2373–2383. — Bibliogr. s. 2382–2383, Abstr. — Publikacja dostępna online od: 2019-09-30
Autorzy (3)
- AGHMadej Dominika
- AGHRajska Maria
- Kruk Andrzej
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 126884 |
|---|---|
| Data dodania do BaDAP | 2020-01-20 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.ceramint.2019.09.228 |
| Rok publikacji | 2020 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Ceramics International |
Abstract
Calcium zirconium aluminate, Ca7ZrAl6O18, is only the ternary compound of CaO, Al2O3 and ZrO2 with hydration reactivity. Calcium zirconium aluminate is conventionally synthesized by a solid-state reaction processing using CaCO3, Al2O3 and ZrO2, as starting materials at temperatures exceeding 1400 °C. In the present study, Ca7ZrAl6O18 along with some admixture phases was prepared by modifying co-precipitation method using ammonia solution, NH3(aq) or saturated oxalate ammonium solution in concentrated ammonia solution, (NH4)2C2O4–NH3(aq) as a precipitation agent. Crystalline Ca7ZrAl6O18 phase was detected at relatively low temperature (~900 °C) together with other intermediate crystalline products. Formation of the final product of Ca7ZrAl6O18 powders, with CaZrO3 and Ca12Al14O33 as accessory phases, requires heat treatment at 1200 °C for 5 h. Two novel approaches for the synthesis of Ca7ZrAl6O18 affect its further hydration behaviour. Ca3 [Al(OH)6]2 or C3AH6 with a hitherto unknown rounded crystal habit was formed within the cement pastes made of Ca7ZrAl6O18, which was synthesized by the modifying co-precipitation method using (NH4)2C2O4–NH3(aq) as a precipitation agent. © 2019 Elsevier Ltd and Techna Group S.r.l.
