Preparation of NiCr/YSZ two-layered burn-resistant coating on γ-TiAl alloys based on plasma surface metallurgy and ion plating methods
The NiCr/YSZ coating was fabricated on γ-TiAl alloy by double glow plasma surface metallurgy technology and multi-arc ion plating technology. The microstructure, microhardness, bonding strength, and burn resistance of NiCr/YSZ coating were studied in detail. The results showed that the NiCr/YSZ coat...
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University of Belgrade, Technical Faculty, Bor
2021-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2021/1450-53392100005W.pdf |
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| author | Wei D.-B. Li M.-F. Zhou X. Li F.-K. Li S.-Q. Zhang P.-Z. |
| author_facet | Wei D.-B. Li M.-F. Zhou X. Li F.-K. Li S.-Q. Zhang P.-Z. |
| author_sort | Wei D.-B. |
| collection | DOAJ |
| description | The NiCr/YSZ coating was fabricated on γ-TiAl alloy by double glow plasma surface metallurgy technology and multi-arc ion plating technology. The microstructure, microhardness, bonding strength, and burn resistance of NiCr/YSZ coating were studied in detail. The results showed that the NiCr/YSZ coating was dense and homogeneous, including a duplex structure of top YSZ ceramic coating and underlying Ni-Cr bond coating. The average microhardness of NiCr/YSZ coating was raised by a factor of about 2 compared to the γ-TiAl substrate. The thermal shock test indicated that the composite structure had superior bonding strength and the defects such as metal droplets on the ceramic coating were the source of cracks. The high-energy laser beam destroyed the surface of γ-TiAl alloy, forming protruding combustion products in ablation zone and splashing residues around ablation zone. When coated by NiCr/YSZ coating, the combustion process was delayed through isolating and dissipating heat. The ablation range was controlled and the ablation damage was reduced at the same irradiation power. The NiCr/YSZ coating preliminarily realized to improve the burn resistance of γ- TiAl alloy. |
| format | Article |
| id | doaj-art-92c3e7cabc98401db8ace6945b90f13d |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-92c3e7cabc98401db8ace6945b90f13d2025-02-02T22:40:56ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752021-01-01571839610.2298/JMMB200902005W1450-53392100005WPreparation of NiCr/YSZ two-layered burn-resistant coating on γ-TiAl alloys based on plasma surface metallurgy and ion plating methodsWei D.-B.0Li M.-F.1Zhou X.2Li F.-K.3Li S.-Q.4Zhang P.-Z.5College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China + Materials Preparation and Protection for Harsh Environment Key Laboratory of Ministry of Industry and Information Technology, Nanjing, ChinaCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China + Materials Preparation and Protection for Harsh Environment Key Laboratory of Ministry of Industry and Information Technology, Nanjing, ChinaCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China + Materials Preparation and Protection for Harsh Environment Key Laboratory of Ministry of Industry and Information Technology, Nanjing, ChinaCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China + Materials Preparation and Protection for Harsh Environment Key Laboratory of Ministry of Industry and Information Technology, Nanjing, ChinaCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China + Materials Preparation and Protection for Harsh Environment Key Laboratory of Ministry of Industry and Information Technology, Nanjing, ChinaCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China + Materials Preparation and Protection for Harsh Environment Key Laboratory of Ministry of Industry and Information Technology, Nanjing, ChinaThe NiCr/YSZ coating was fabricated on γ-TiAl alloy by double glow plasma surface metallurgy technology and multi-arc ion plating technology. The microstructure, microhardness, bonding strength, and burn resistance of NiCr/YSZ coating were studied in detail. The results showed that the NiCr/YSZ coating was dense and homogeneous, including a duplex structure of top YSZ ceramic coating and underlying Ni-Cr bond coating. The average microhardness of NiCr/YSZ coating was raised by a factor of about 2 compared to the γ-TiAl substrate. The thermal shock test indicated that the composite structure had superior bonding strength and the defects such as metal droplets on the ceramic coating were the source of cracks. The high-energy laser beam destroyed the surface of γ-TiAl alloy, forming protruding combustion products in ablation zone and splashing residues around ablation zone. When coated by NiCr/YSZ coating, the combustion process was delayed through isolating and dissipating heat. The ablation range was controlled and the ablation damage was reduced at the same irradiation power. The NiCr/YSZ coating preliminarily realized to improve the burn resistance of γ- TiAl alloy.http://www.doiserbia.nb.rs/img/doi/1450-5339/2021/1450-53392100005W.pdfγ-tial alloysnicr/ysz coatingmicrostructurebonding strengthburn resistance |
| spellingShingle | Wei D.-B. Li M.-F. Zhou X. Li F.-K. Li S.-Q. Zhang P.-Z. Preparation of NiCr/YSZ two-layered burn-resistant coating on γ-TiAl alloys based on plasma surface metallurgy and ion plating methods Journal of Mining and Metallurgy. Section B: Metallurgy γ-tial alloys nicr/ysz coating microstructure bonding strength burn resistance |
| title | Preparation of NiCr/YSZ two-layered burn-resistant coating on γ-TiAl alloys based on plasma surface metallurgy and ion plating methods |
| title_full | Preparation of NiCr/YSZ two-layered burn-resistant coating on γ-TiAl alloys based on plasma surface metallurgy and ion plating methods |
| title_fullStr | Preparation of NiCr/YSZ two-layered burn-resistant coating on γ-TiAl alloys based on plasma surface metallurgy and ion plating methods |
| title_full_unstemmed | Preparation of NiCr/YSZ two-layered burn-resistant coating on γ-TiAl alloys based on plasma surface metallurgy and ion plating methods |
| title_short | Preparation of NiCr/YSZ two-layered burn-resistant coating on γ-TiAl alloys based on plasma surface metallurgy and ion plating methods |
| title_sort | preparation of nicr ysz two layered burn resistant coating on γ tial alloys based on plasma surface metallurgy and ion plating methods |
| topic | γ-tial alloys nicr/ysz coating microstructure bonding strength burn resistance |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2021/1450-53392100005W.pdf |
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