Influence of SiC Addition on Mechanical Behavior of Thermal Barriers with the Aid of Acoustic Emission
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 Y<sub>2</sub>O<sub>3</sub> stabilized ZrO<sub>2</sub&...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-01-01
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| Series: | Journal of Composites Science |
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| Online Access: | https://www.mdpi.com/2504-477X/5/1/16 |
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| author | David Jeronimo Busquets Carlos Bloem Amparo Borrell Maria Dolores Salvador |
| author_facet | David Jeronimo Busquets Carlos Bloem Amparo Borrell Maria Dolores Salvador |
| author_sort | David Jeronimo Busquets |
| collection | DOAJ |
| description | 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 Y<sub>2</sub>O<sub>3</sub> stabilized ZrO<sub>2</sub> (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/Al<sub>2</sub>O<sub>3</sub> 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 × 12 × 2 mm<sup>3</sup>. An intermetallic was deposited as a bond coating, followed by a coating of Y-TZP/Al<sub>2</sub>O<sub>3</sub> with and without 15 wt.% SiC, with thicknesses between 87 and 161 μm. 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. |
| first_indexed | 2024-03-09T05:47:17Z |
| format | Article |
| id | doaj.art-82b03302320f46dc8e6c568654633996 |
| institution | Directory Open Access Journal |
| issn | 2504-477X |
| language | English |
| last_indexed | 2024-03-09T05:47:17Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Composites Science |
| spelling | doaj.art-82b03302320f46dc8e6c5686546339962023-12-03T12:19:54ZengMDPI AGJournal of Composites Science2504-477X2021-01-01511610.3390/jcs5010016Influence of SiC Addition on Mechanical Behavior of Thermal Barriers with the Aid of Acoustic EmissionDavid Jeronimo Busquets0Carlos Bloem1Amparo Borrell2Maria Dolores Salvador3Instituto de Tecnología de Materiales, Camino de vera S/N Edificio 5E, 46022 Valencia, SpainInstituto de Tecnología de Materiales, Camino de vera S/N Edificio 5E, 46022 Valencia, SpainInstituto de Tecnología de Materiales, Camino de vera S/N Edificio 5E, 46022 Valencia, SpainInstituto de Tecnología de Materiales, Camino de vera S/N Edificio 5E, 46022 Valencia, SpainThe 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 Y<sub>2</sub>O<sub>3</sub> stabilized ZrO<sub>2</sub> (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/Al<sub>2</sub>O<sub>3</sub> 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 × 12 × 2 mm<sup>3</sup>. An intermetallic was deposited as a bond coating, followed by a coating of Y-TZP/Al<sub>2</sub>O<sub>3</sub> with and without 15 wt.% SiC, with thicknesses between 87 and 161 μm. 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.https://www.mdpi.com/2504-477X/5/1/16acoustic emissionthermal barrier coatingsfinite element analysissilicon carbidealuminaItria |
| spellingShingle | David Jeronimo Busquets Carlos Bloem Amparo Borrell Maria Dolores Salvador Influence of SiC Addition on Mechanical Behavior of Thermal Barriers with the Aid of Acoustic Emission Journal of Composites Science acoustic emission thermal barrier coatings finite element analysis silicon carbide alumina Itria |
| title | Influence of SiC Addition on Mechanical Behavior of Thermal Barriers with the Aid of Acoustic Emission |
| title_full | Influence of SiC Addition on Mechanical Behavior of Thermal Barriers with the Aid of Acoustic Emission |
| title_fullStr | Influence of SiC Addition on Mechanical Behavior of Thermal Barriers with the Aid of Acoustic Emission |
| title_full_unstemmed | Influence of SiC Addition on Mechanical Behavior of Thermal Barriers with the Aid of Acoustic Emission |
| title_short | Influence of SiC Addition on Mechanical Behavior of Thermal Barriers with the Aid of Acoustic Emission |
| title_sort | influence of sic addition on mechanical behavior of thermal barriers with the aid of acoustic emission |
| topic | acoustic emission thermal barrier coatings finite element analysis silicon carbide alumina Itria |
| url | https://www.mdpi.com/2504-477X/5/1/16 |
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