Publisher DOI: 10.1016/j.ceramint.2019.01.200
Title: Stable crack propagation in free standing thermal sprayed Al2O3 and Al2 O3 [sbnd]ZrO 2[sbnd]TiO2 coatings
Language: English
Authors: Neumann, Marc 
Gehre, Patrick 
Kuebler, Jakob 
Dadivanyan, Natalia 
Jelitto, Hans 
Schneider, Gerold A. 
Aneziris, Christos G. 
Issue Date: May-2019
Source: Ceramics International 7 (45): 8761-8766 (2019-05)
Journal or Series Name: Ceramics international 
Abstract (english): Due to their unique properties and structure, thermally sprayed ceramics are applied in many fields. Their applications range from engineering ceramics to the use in high temperature units, especially since an improved thermal shock performance was observed. The present study presents an analysis of structural and mechanical properties of thermal sprayed alumina-rich coatings at room temperature. Microstructure and phase composition were analysed by scanning electron microscopy and X-ray diffraction. For pure alumina material, high temperature X-ray diffraction was performed additionally and yielded a phase transition within heating to 1200 °C. Micrographs present typically layered and chaotic microstructure, streaked by microcracks. Cyclic loading test-procedures and the resulting load-displacement-curves revealed a pronounced R-curve-behaviour for coatings of pure Al 2 O 3 and Al 2 O 3 [sbnd]ZrO 2 [sbnd]TiO 2 compositions.
ISSN: 0272-8842
Institute: Keramische Hochleistungswerkstoffe M-9 
Type: (wissenschaftlicher) Artikel
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