FOR 3010: Thermal Expansion and Phase Transformation up to 1200 °C of Metastable Aluminas Produced by Flame Spraying
Contributing person | Fischer, Undine | |
Type of the data | Collection | |
Total size of the dataset | 106156129 | |
Author | Zienert, Tilo | |
Author | Aneziris, Christos G. | |
Upload date | 2026-10-27T10:20:35Z | |
Publication date | 2026-10-27T10:20:35Z | |
Data of data creation | 2026-10-23 | |
Publication date | 2026-10-27 | |
Abstract of the dataset | The transition aluminas δ1 and the cubic, non-spinel-type η-Al2O3 were detected in addition to α-Al2O3 in flame-sprayed material. Their transitions from room temperature up to 1200 °C were investigated by high-temperature XRD measurements. Structural changes with time and temperature were observed for all transition aluminas (η-, δ1- and θ-Al2O3). The phases followed the expected transition sequence of η→δ1→θ→α and showed mainly linear, temperature-independent transition rates. Based on the determined thermal expansion of the phases, it is proposed that the metastable transitions are at least partly mechanically induced. In addition, a second-order phase transition from η→θ might be indicated around 1050–1075 °C by the determined trends of density. | |
Public reference to this page | https://opara.zih.tu-dresden.de/handle/123456789/3020 | |
Publisher | Technische Universität Bergakademie Freiberg | |
Specification of the discipline(s) | 4::43::405::405-05 | |
Title of the dataset | FOR 3010: Thermal Expansion and Phase Transformation up to 1200 °C of Metastable Aluminas Produced by Flame Spraying | |
Project abstract | The focus of the project is the investigation of the pre-synthesis of functional grains for the manufacturing of “Refractory Composites”. The pre-synthesis of the grains takes place with the aid of different manufacturing routes and sintering conditions, which influence the particle geometry of the grain (polyhedral via crushed grains, spherical via alginate route, adjustable shape via 3D-printing), the surface morphology and chemistry as well as the generated grainsize distribution as a function of the ceramic and metallic parts. A complete new approach is dealing with the investigation of the electrical assisted wettability in a special heating microscope of sandwich components based on coarse grained core/shell structures of the project 2 as well as fine grained structures based on 3D-printed components of project 1. By applying a voltage with the aid of Pt-electrodes the three wetting stages will be investigated. | |
Funding Acknowledgement | The dataset was generated within the framwork of the Research Unit FOR 3010 (project ID: 416817512) funded by ther German Research Foundation (DFG). | |
Public project website(s) | https://tu-freiberg.de/en/research/for3010 | |
Public project website(s) | https://gepris.dfg.de/project/433714497 | |
Project title | FOR 3010_SP1 - Pre-synthesis of functional grains for manufacturing of ‘Refractory Composites’ |