Influence of Pt Addition and Manufacturing Process on the Failure Mechanisms of NiCoCrAlYTa-Base Thermal Barrier Coating Systems under Thermal Cycling Conditions
The cyclic oxidation of NiCoCrAlYTa-base thermal barrier coating systems was investigated at 1100 °C. The influence of the NiCoCrAlYTa deposition process, the coating modification by a Pt-overlayer, and the surface preparation steps were studied. Thermal cycling results showed that the addit...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-09-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/8/10/771 |
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| author | Aurelie Vande Put Djar Oquab Aymeric Raffaitin Daniel Monceau |
| author_facet | Aurelie Vande Put Djar Oquab Aymeric Raffaitin Daniel Monceau |
| author_sort | Aurelie Vande Put |
| collection | DOAJ |
| description | The cyclic oxidation of NiCoCrAlYTa-base thermal barrier coating systems was investigated at 1100 °C. The influence of the NiCoCrAlYTa deposition process, the coating modification by a Pt-overlayer, and the surface preparation steps were studied. Thermal cycling results showed that the addition of a Pt-overlayer, a dense and oxide-free bond-coating microstructure, together with a smooth NiCoCrAlYTa surface prior to Pt deposition and a suitable surface preparation before thermal barrier deposition all increase the lifetime. Degradation mechanisms are proposed to explain how coating defects develop during thermal cycling and how the fabrication process influences both failure and lifetime. |
| first_indexed | 2024-04-13T17:55:32Z |
| format | Article |
| id | doaj.art-ca24e5a0d873417fbb5183cc288129cf |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-04-13T17:55:32Z |
| publishDate | 2018-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-ca24e5a0d873417fbb5183cc288129cf2022-12-22T02:36:31ZengMDPI AGMetals2075-47012018-09-0181077110.3390/met8100771met8100771Influence of Pt Addition and Manufacturing Process on the Failure Mechanisms of NiCoCrAlYTa-Base Thermal Barrier Coating Systems under Thermal Cycling ConditionsAurelie Vande Put0Djar Oquab1Aymeric Raffaitin2Daniel Monceau3Centre Interuniversitaire de Recherche et d’Ingénierie des Matériaux (CIRIMAT), Université de Toulouse, CNRS, INP-ENSIACET 4 allée Emile Monso-BP44362, 31030 Toulouse CEDEX 4, FranceCentre Interuniversitaire de Recherche et d’Ingénierie des Matériaux (CIRIMAT), Université de Toulouse, CNRS, INP-ENSIACET 4 allée Emile Monso-BP44362, 31030 Toulouse CEDEX 4, FranceSafran Helicopter Engines, Avenue Joseph Szydlowski, 64510 Bordes, FranceCentre Interuniversitaire de Recherche et d’Ingénierie des Matériaux (CIRIMAT), Université de Toulouse, CNRS, INP-ENSIACET 4 allée Emile Monso-BP44362, 31030 Toulouse CEDEX 4, FranceThe cyclic oxidation of NiCoCrAlYTa-base thermal barrier coating systems was investigated at 1100 °C. The influence of the NiCoCrAlYTa deposition process, the coating modification by a Pt-overlayer, and the surface preparation steps were studied. Thermal cycling results showed that the addition of a Pt-overlayer, a dense and oxide-free bond-coating microstructure, together with a smooth NiCoCrAlYTa surface prior to Pt deposition and a suitable surface preparation before thermal barrier deposition all increase the lifetime. Degradation mechanisms are proposed to explain how coating defects develop during thermal cycling and how the fabrication process influences both failure and lifetime.http://www.mdpi.com/2075-4701/8/10/771TBC systemMCrAlYoxidationplatinum |
| spellingShingle | Aurelie Vande Put Djar Oquab Aymeric Raffaitin Daniel Monceau Influence of Pt Addition and Manufacturing Process on the Failure Mechanisms of NiCoCrAlYTa-Base Thermal Barrier Coating Systems under Thermal Cycling Conditions Metals TBC system MCrAlY oxidation platinum |
| title | Influence of Pt Addition and Manufacturing Process on the Failure Mechanisms of NiCoCrAlYTa-Base Thermal Barrier Coating Systems under Thermal Cycling Conditions |
| title_full | Influence of Pt Addition and Manufacturing Process on the Failure Mechanisms of NiCoCrAlYTa-Base Thermal Barrier Coating Systems under Thermal Cycling Conditions |
| title_fullStr | Influence of Pt Addition and Manufacturing Process on the Failure Mechanisms of NiCoCrAlYTa-Base Thermal Barrier Coating Systems under Thermal Cycling Conditions |
| title_full_unstemmed | Influence of Pt Addition and Manufacturing Process on the Failure Mechanisms of NiCoCrAlYTa-Base Thermal Barrier Coating Systems under Thermal Cycling Conditions |
| title_short | Influence of Pt Addition and Manufacturing Process on the Failure Mechanisms of NiCoCrAlYTa-Base Thermal Barrier Coating Systems under Thermal Cycling Conditions |
| title_sort | influence of pt addition and manufacturing process on the failure mechanisms of nicocralyta base thermal barrier coating systems under thermal cycling conditions |
| topic | TBC system MCrAlY oxidation platinum |
| url | http://www.mdpi.com/2075-4701/8/10/771 |
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