Molten‐Volcanic‐Ash‐Phobic Thermal Barrier Coating based on Biomimetic Structure
Abstract Volcanic ash is a major threat to aviation safety. The softening/melting temperatures of volcanic ash lie far below typical aero‐engine operating temperatures. Thus, molten ash can accelerate the failure of thermal barrier coatings (TBCs). Here, inspired by natural superhydrophobic surfaces...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-04-01
|
| Series: | Advanced Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/advs.202205156 |
| _version_ | 1797852010966417408 |
|---|---|
| author | Yiqian Guo Wenjia Song Lei Guo Xinxin Li Wenting He Xudong Yan Donald B. Dingwell Hongbo Guo |
| author_facet | Yiqian Guo Wenjia Song Lei Guo Xinxin Li Wenting He Xudong Yan Donald B. Dingwell Hongbo Guo |
| author_sort | Yiqian Guo |
| collection | DOAJ |
| description | Abstract Volcanic ash is a major threat to aviation safety. The softening/melting temperatures of volcanic ash lie far below typical aero‐engine operating temperatures. Thus, molten ash can accelerate the failure of thermal barrier coatings (TBCs). Here, inspired by natural superhydrophobic surfaces (e.g., the lotus leaf), a molten‐volcanic‐ash‐phobic TBC, which provides a large possibility to eliminate molten ash issues of TBCs, is developed. A hierarchically structured surface is first prepared on a (Gd0.9Yb0.1)2Zr2O7 (GYbZ) pellet by ultrafast laser direct writing technology, aiming to confirm the feasibility of the biomimetic microstructure to repel molten volcanic ash wetting. Then biomimetic‐structured GYbZ TBCs are successfully fabricated using plasma spray physical vapor deposition, which reveals “silicate” phobicity at high temperatures. The exciting molten‐volcanic‐ash‐phobic attribute of the designed surfaces is attributed to the lotus‐leaf‐like dual‐scale microstructure, emulating in particular the existence of nanoparticles. These findings may be an important step toward the development of next‐generation aviation engines with greatly reduced vulnerability to environmental siliceous debris. |
| first_indexed | 2024-04-09T19:27:08Z |
| format | Article |
| id | doaj.art-db093ebae40745249037ef78b4afd8ee |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-04-09T19:27:08Z |
| publishDate | 2023-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-db093ebae40745249037ef78b4afd8ee2023-04-05T08:09:48ZengWileyAdvanced Science2198-38442023-04-011010n/an/a10.1002/advs.202205156Molten‐Volcanic‐Ash‐Phobic Thermal Barrier Coating based on Biomimetic StructureYiqian Guo0Wenjia Song1Lei Guo2Xinxin Li3Wenting He4Xudong Yan5Donald B. Dingwell6Hongbo Guo7School of Materials Science and Engineering Beihang University Xueyuan Road 37 Beijing 100191 ChinaSchool of Materials Science and Engineering Beihang University Xueyuan Road 37 Beijing 100191 ChinaSchool of Materials Science and Engineering Tianjin University Weijin Road 92 Tianjin 300072 ChinaSchool of Mechanical Engineering and Automation Beihang University Xueyuan Road 37 Beijing 100191 ChinaSchool of Materials Science and Engineering Beihang University Xueyuan Road 37 Beijing 100191 ChinaSchool of Materials Science and Engineering Beihang University Xueyuan Road 37 Beijing 100191 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 Beijing 100191 ChinaAbstract Volcanic ash is a major threat to aviation safety. The softening/melting temperatures of volcanic ash lie far below typical aero‐engine operating temperatures. Thus, molten ash can accelerate the failure of thermal barrier coatings (TBCs). Here, inspired by natural superhydrophobic surfaces (e.g., the lotus leaf), a molten‐volcanic‐ash‐phobic TBC, which provides a large possibility to eliminate molten ash issues of TBCs, is developed. A hierarchically structured surface is first prepared on a (Gd0.9Yb0.1)2Zr2O7 (GYbZ) pellet by ultrafast laser direct writing technology, aiming to confirm the feasibility of the biomimetic microstructure to repel molten volcanic ash wetting. Then biomimetic‐structured GYbZ TBCs are successfully fabricated using plasma spray physical vapor deposition, which reveals “silicate” phobicity at high temperatures. The exciting molten‐volcanic‐ash‐phobic attribute of the designed surfaces is attributed to the lotus‐leaf‐like dual‐scale microstructure, emulating in particular the existence of nanoparticles. These findings may be an important step toward the development of next‐generation aviation engines with greatly reduced vulnerability to environmental siliceous debris.https://doi.org/10.1002/advs.202205156biomimetichierarchical structurethermal barrier coatingvolcanic ashwetting |
| spellingShingle | Yiqian Guo Wenjia Song Lei Guo Xinxin Li Wenting He Xudong Yan Donald B. Dingwell Hongbo Guo Molten‐Volcanic‐Ash‐Phobic Thermal Barrier Coating based on Biomimetic Structure Advanced Science biomimetic hierarchical structure thermal barrier coating volcanic ash wetting |
| title | Molten‐Volcanic‐Ash‐Phobic Thermal Barrier Coating based on Biomimetic Structure |
| title_full | Molten‐Volcanic‐Ash‐Phobic Thermal Barrier Coating based on Biomimetic Structure |
| title_fullStr | Molten‐Volcanic‐Ash‐Phobic Thermal Barrier Coating based on Biomimetic Structure |
| title_full_unstemmed | Molten‐Volcanic‐Ash‐Phobic Thermal Barrier Coating based on Biomimetic Structure |
| title_short | Molten‐Volcanic‐Ash‐Phobic Thermal Barrier Coating based on Biomimetic Structure |
| title_sort | molten volcanic ash phobic thermal barrier coating based on biomimetic structure |
| topic | biomimetic hierarchical structure thermal barrier coating volcanic ash wetting |
| url | https://doi.org/10.1002/advs.202205156 |
| work_keys_str_mv | AT yiqianguo moltenvolcanicashphobicthermalbarriercoatingbasedonbiomimeticstructure AT wenjiasong moltenvolcanicashphobicthermalbarriercoatingbasedonbiomimeticstructure AT leiguo moltenvolcanicashphobicthermalbarriercoatingbasedonbiomimeticstructure AT xinxinli moltenvolcanicashphobicthermalbarriercoatingbasedonbiomimeticstructure AT wentinghe moltenvolcanicashphobicthermalbarriercoatingbasedonbiomimeticstructure AT xudongyan moltenvolcanicashphobicthermalbarriercoatingbasedonbiomimeticstructure AT donaldbdingwell moltenvolcanicashphobicthermalbarriercoatingbasedonbiomimeticstructure AT hongboguo moltenvolcanicashphobicthermalbarriercoatingbasedonbiomimeticstructure |