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Influence of SiC Addition on Mechanical Behavior of Thermal Barriers with the Aid of Acoustic Emission
- Source :
- Journal of Composites Science, Volume 5, Issue 1, Journal of Composites Science, Vol 5, Iss 16, p 16 (2021), RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia, instname
- Publication Year :
- 2021
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2021.
-
Abstract
- The improvement of high temperature materials with lower heat transfer coefficients lead to the development of thermal barrier coatings (TBCs). One of the most widely used materials for thermal barrier coatings is Y2O3 stabilized ZrO2 (Y-TZP) because of its excellent shock resistance, low thermal conductivity, and relatively high coefficient of thermal expansion. The aim of this work is to study the TBCs mechanical behavior with the addition of SiC into the suspension of Y-TZP/Al2O3 by acoustic emission (AE). Additionally, a microstructural analysis and a finite elements model were carried out in order to compare results. The coatings were made by suspension plasma spray (SPS) on metal plates of 70 &times<br />12 &times<br />2 mm3. An intermetallic was deposited as a bond coating, followed by a coating of Y-TZP/Al2O3 with and without 15 wt.% SiC, with thicknesses between 87 and 161 &mu<br />m. The AE becomes a fundamental tool in the study of the mechanical behavior of thermal barriers. The use of wavelet transforms streamlines the study and analysis of recorded sound spectra. The crack generation arises at very low stress levels.
- Subjects :
- Materials science
Alumina
Self-healing
Silicon carbide
02 engineering and technology
Heat transfer coefficient
finite element analysis
engineering.material
lcsh:Technology
01 natural sciences
Thermal expansion
Acoustic emission
Thermal barrier coating
chemistry.chemical_compound
Thermal conductivity
Coating
silicon carbide
CIENCIA DE LOS MATERIALES E INGENIERIA METALURGICA
0103 physical sciences
Suspension plasma spray
self-healing
Composite material
thermal barrier coatings
lcsh:Science
Engineering (miscellaneous)
Itria
010302 applied physics
lcsh:T
Finite element analysis
021001 nanoscience & nanotechnology
alumina
chemistry
Thermal barrier coatings
Ceramics and Composites
engineering
Zirconia
lcsh:Q
0210 nano-technology
acoustic emission
zirconia
Subjects
Details
- Language :
- English
- ISSN :
- 2504477X
- Database :
- OpenAIRE
- Journal :
- Journal of Composites Science
- Accession number :
- edsair.doi.dedup.....c8a7d3dc62683c266db4596bca3f6cb3
- Full Text :
- https://doi.org/10.3390/jcs5010016