Ultrafast laser reconstructed PS-PVD thermal barrier coatings with superior silicophobic triple-scale micro/nano structure
Silicate material from environmental dust melts and adheres to the surfaces of thermal barrier coatings (TBCs) on hot-components of turbine engines accelerating their eventual failure. To mitigate against the wettability and spreadability of such molten deposits on TBCs, dual-scale structured (Gd0.9...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-04-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127523002617 |
| _version_ | 1797843940372643840 |
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| author | Yiqian Guo Lei Guo Xinxin Li Chengyang Jiang Liangliang Wei Xingya Zhu Dongrui Liu Wenjia Song Donald B. Dingwell Hongbo Guo |
| author_facet | Yiqian Guo Lei Guo Xinxin Li Chengyang Jiang Liangliang Wei Xingya Zhu Dongrui Liu Wenjia Song Donald B. Dingwell Hongbo Guo |
| author_sort | Yiqian Guo |
| collection | DOAJ |
| description | Silicate material from environmental dust melts and adheres to the surfaces of thermal barrier coatings (TBCs) on hot-components of turbine engines accelerating their eventual failure. To mitigate against the wettability and spreadability of such molten deposits on TBCs, dual-scale structured (Gd0.9Yb0.1)2Zr2O7 TBCs with “lotus leaf” like surface morphology were fabricated using novel PS-PVD technology, which revealed an enhanced resistance to the wetting of molten silicate but experienced some degradation at high temperatures. By the ultrafast laser direct writing technology, the surface of the PS-PVD TBC was re-constructed, obtaining a triple-scale structure, consisting of conical micro-pillars, cauliflower-like domed micro-protuberances and nanoparticles. The contact angle of molten deposits at 1200 °C on this TBC was measured to be ∼ 127.2°, and after exposure to 1300 °C for 10 h, the TBC is still silicophobic (i.e., contact angle of ∼ 124.7°). This superior silicate phobicity is largely attributed to the increased surface roughness of the triple-scale structure. Further, the reaction layer appears to resist effectively further melt penetration. We thus propose that PS-PVD technology together with ultrafast laser direct writing may have great potential for the fabrication of molten silicophobic TBCs for turbine engines. |
| first_indexed | 2024-04-09T17:14:09Z |
| format | Article |
| id | doaj.art-c0d8d734b2184a73ab28fc425407cd68 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-04-09T17:14:09Z |
| publishDate | 2023-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-c0d8d734b2184a73ab28fc425407cd682023-04-20T04:35:22ZengElsevierMaterials & Design0264-12752023-04-01228111846Ultrafast laser reconstructed PS-PVD thermal barrier coatings with superior silicophobic triple-scale micro/nano structureYiqian Guo0Lei Guo1Xinxin Li2Chengyang Jiang3Liangliang Wei4Xingya Zhu5Dongrui Liu6Wenjia Song7Donald B. Dingwell8Hongbo Guo9School of Materials Science and Engineering, Beihang University, Xueyuan Road 37, 100191 Beijing, ChinaSchool of Materials Science and Engineering, Tianjin University, Weijin Road 92, 300072 Tianjin, China; Corresponding authors.School of Mechanical Engineering and Automation, Beihang University, Xueyuan Road 37, 100191 Beijing, ChinaBeihang Hangzhou Innovation Institute Yuhang, Xixi octagon city, 310023 Hangzhou, ChinaSchool of Materials Science and Engineering, Beihang University, Xueyuan Road 37, 100191 Beijing, ChinaSchool of Materials Science and Engineering, Beihang University, Xueyuan Road 37, 100191 Beijing, ChinaSchool of Materials Science and Engineering, Beihang University, Xueyuan Road 37, 100191 Beijing, ChinaSchool of Materials Science and Engineering, Beihang University, Xueyuan Road 37, 100191 Beijing, ChinaDepartment of Earth and Environmental Sciences, Ludwig-Maximilians-Universität München, Theresienstrasse 41, 80333 Munich, GermanySchool of Materials Science and Engineering, Beihang University, Xueyuan Road 37, 100191 Beijing, China; Corresponding authors.Silicate material from environmental dust melts and adheres to the surfaces of thermal barrier coatings (TBCs) on hot-components of turbine engines accelerating their eventual failure. To mitigate against the wettability and spreadability of such molten deposits on TBCs, dual-scale structured (Gd0.9Yb0.1)2Zr2O7 TBCs with “lotus leaf” like surface morphology were fabricated using novel PS-PVD technology, which revealed an enhanced resistance to the wetting of molten silicate but experienced some degradation at high temperatures. By the ultrafast laser direct writing technology, the surface of the PS-PVD TBC was re-constructed, obtaining a triple-scale structure, consisting of conical micro-pillars, cauliflower-like domed micro-protuberances and nanoparticles. The contact angle of molten deposits at 1200 °C on this TBC was measured to be ∼ 127.2°, and after exposure to 1300 °C for 10 h, the TBC is still silicophobic (i.e., contact angle of ∼ 124.7°). This superior silicate phobicity is largely attributed to the increased surface roughness of the triple-scale structure. Further, the reaction layer appears to resist effectively further melt penetration. We thus propose that PS-PVD technology together with ultrafast laser direct writing may have great potential for the fabrication of molten silicophobic TBCs for turbine engines.http://www.sciencedirect.com/science/article/pii/S0264127523002617Thermal barrier coatingsplasma spray physical vapor deposition (PS-PVD)Ultrafast laserSilicophobicityStructure design |
| spellingShingle | Yiqian Guo Lei Guo Xinxin Li Chengyang Jiang Liangliang Wei Xingya Zhu Dongrui Liu Wenjia Song Donald B. Dingwell Hongbo Guo Ultrafast laser reconstructed PS-PVD thermal barrier coatings with superior silicophobic triple-scale micro/nano structure Materials & Design Thermal barrier coatings plasma spray physical vapor deposition (PS-PVD) Ultrafast laser Silicophobicity Structure design |
| title | Ultrafast laser reconstructed PS-PVD thermal barrier coatings with superior silicophobic triple-scale micro/nano structure |
| title_full | Ultrafast laser reconstructed PS-PVD thermal barrier coatings with superior silicophobic triple-scale micro/nano structure |
| title_fullStr | Ultrafast laser reconstructed PS-PVD thermal barrier coatings with superior silicophobic triple-scale micro/nano structure |
| title_full_unstemmed | Ultrafast laser reconstructed PS-PVD thermal barrier coatings with superior silicophobic triple-scale micro/nano structure |
| title_short | Ultrafast laser reconstructed PS-PVD thermal barrier coatings with superior silicophobic triple-scale micro/nano structure |
| title_sort | ultrafast laser reconstructed ps pvd thermal barrier coatings with superior silicophobic triple scale micro nano structure |
| topic | Thermal barrier coatings plasma spray physical vapor deposition (PS-PVD) Ultrafast laser Silicophobicity Structure design |
| url | http://www.sciencedirect.com/science/article/pii/S0264127523002617 |
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