| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Naraparaju, Ravisankar
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2024Processing of Nb-coatings on ZrB2 and C-ZrB2/SiC composites
- 2024Influence of GdO coatings on the oxidation behavior of Zirconium Diboride
- 2024Performance of EB-PVD Y-based EBC System under High Temperature Water Vapor Environment
- 2023Popocatepetl Ash Infiltration in Lanthanum-Gadolinium Zirconate Ceramics
- 2023Single and multi-component REDS systems for TEBC application: Synthesis and study of high temperature interaction with CMAS
- 2023Novel magnetron sputtered yttrium-silicon-iron oxide as CMAS resistant top coat material for environmental barrier coatingscitations
- 2020Novel magnetron sputtered ceramic YSiFe oxide as CMAS-resistant coatings for environmental barrier coatings.
- 2019Investigation of CMAS resistance of sacrificial suspension sprayed alumina topcoats on EB-PVD 7YSZ layerscitations
- 2019Investigation of CMAS Resistance of Sacrificial Suspension Sprayed Alumina Topcoats on EB-PVD 7YSZ Layerscitations
Places of action
| Organizations | Location | People |
|---|
document
Popocatepetl Ash Infiltration in Lanthanum-Gadolinium Zirconate Ceramics
Abstract
Currently, the most widely used material for thermal barrier coatings (TBC) in aeronautical industry is zirconia stabilized with 6- 8% of yttria (7YSZ). However, 7YSZ transforms from tetragonal to monoclic at temperatures above 1200°C causing phase destabilization [2]. This transformation can also be accelerated by the presence of silica compounds as in molten volcanic ashes (VAs) [3]. These deposits of molten silica infiltrate throughout the coating porosity and solidify during cooling producing residual stresses that eventually generate TBC failure [4].Rare earth zirconates (REZs) have been considered as a promising material due to phase stabilization at high temperatures, these crystalize in a typical pyrochlore structure. Compared to 7YSZ, REZs are ceramic materials that have many advantages for TBC applications: no phase transformation from room temperature to their melting temperature, considerably high sintering resistance, a very low thermal conductivity, and a lower oxygen ion diffusivity [2]. Among these REZs, gadolinium zirconate (GZO) and lanthanum zirconate (LZO) have received great attention due to their stability at temperatures above 1500°C. When LZO and GZO interact with Si-based melts, they exhibit the formation of reaction products such as apatites (Ap). The formation of Ap is considered as a mechanism against infiltration of Si-based melts because they can act as a sealing layer along the interphase preventing the infiltration mechanism [5].The objective of this work is to analyze the behavior of ash infiltration Popocatepetl VA (Mexico) with LZO, GZO and LZGO solid solutions ((La1-xGdx)2Zr2O7) by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS).