- AutorIn
- Constantin Jahn
- Titel
- Calcium zirconate materials for refractory applications
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:105-qucosa2-708708
- Datum der Einreichung
- 12.12.2019
- Datum der Verteidigung
- 07.05.2020
- Abstract (EN)
- This thesis dealt with the new refractory material calcium zirconate. The aim of this study was to investigate the synthesis of pure phase calcium zirconate in grain sizes up to 3 mm and to produce first refractory materials and examining their properties. For the synthesis the chosen solid state reaction of an equimolar mixture of monoclinic zirconium dioxide and calcium carbonate resulted in single phase calcium zirconate at temperature of at least 1200 °C. An increasing sintering temperature decreased the porosity. The first refractories based on single phase calcium zirconate were formed using the press process as well as slip casting. The thermomechanical properties were promising, which presents a starting point for the usage of refractories based on calcium zirconate in a wide field of possible applications. Remarkable were the residual strengths of about 5 MPa after five thermal shocks. However, corrosion tests with steel melt and gasifier ash showed the decomposition of CaZrO3 in presence of SiO2 which should be examined further for respective industrial usages.
- Verweis
- Investigation of calcium zirconate formation by sintering zirconium dioxide with calcium hydroxide
Link: https://doi.org/10.1016/j.ceramint.2018.03.172
DOI: 10.1016/j.ceramint.2018.03.172 - Freie Schlagwörter (DE)
- Calciumzirkonat, Feststoffsynthese, feuerfester Werkstoff, Thermoschock und Korrosion
- Freie Schlagwörter (EN)
- Calcium zirconate, thermal shock, solid state synthesis, refractory
- Klassifikation (DDC)
- 660
- Normschlagwörter (GND)
- Calciumverbindungen
- Zirkonate
- Thermoschock
- Feuerfester Stoff
- Chemische Synthese
- GutachterIn
- Prof. Dr.-Ing. habil. Christos G. Aneziris
- Prof. Dr.-Ing. habil. Helge Jansen
- BetreuerIn Hochschule / Universität
- Prof. Dr.-Ing. habil. Christos G. Aneziris
- Den akademischen Grad verleihende / prüfende Institution
- Technische Universität Bergakademie Freiberg, Freiberg
- Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:105-qucosa2-708708
- Veröffentlichungsdatum Qucosa
- 18.06.2020
- Dokumenttyp
- Dissertation
- Sprache des Dokumentes
- Englisch