Polymer-derived SiOC reinforced with core–shell nanophase structure of ZrB2/ZrO2 for excellent and stable high-temperature microwave absorption (up to 900 °C)
Abstract Microwave absorbing materials for high-temperature harsh environments are highly desirable for aerodynamically heated parts and engine combustion induced hot spots of aircrafts. This study reports ceramic composites with excellent and stable high-temperature microwave absorption in air, whi...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-01-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-27541-3 |
| _version_ | 1797958643480526848 |
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| author | Yujun Jia Ni Yang Shaofan Xu Alexander D. Snyder Jason F. Patrick Rajan Kumar Dajie Zhang Chengying Xu |
| author_facet | Yujun Jia Ni Yang Shaofan Xu Alexander D. Snyder Jason F. Patrick Rajan Kumar Dajie Zhang Chengying Xu |
| author_sort | Yujun Jia |
| collection | DOAJ |
| description | Abstract Microwave absorbing materials for high-temperature harsh environments are highly desirable for aerodynamically heated parts and engine combustion induced hot spots of aircrafts. This study reports ceramic composites with excellent and stable high-temperature microwave absorption in air, which are made of polymer-derived SiOC reinforced with core–shell nanophase structure of ZrB2/ZrO2. The fabricated ceramic composites have a crystallized t-ZrO2 interface between ZrB2 and SiOC domains. The ceramic composites exhibit stable dielectric properties, which are relatively insensitive to temperature change from room temperature to 900 °C. The return loss exceeds − 10 dB, especially between 28 and 40 GHz, at the elevated temperatures. The stable high-temperature electromagnetic (EM) absorption properties are attributed to the stable dielectric and electrical properties induced by the core–shell nanophase structure of ZrB2/ZrO2. Crystallized t-ZrO2 serve as nanoscale dielectric interfaces between ZrB2 and SiOC, which are favorable for EM wave introduction for enhancing polarization loss and absorption. Existence of t-ZrO2 interface also changes the temperature-dependent DC conductivity of ZrB2/SiOC ceramic composites when compared to that of ZrB2 and SiOC alone. Experimental results from thermomechanical, jet flow, thermal shock, and water vapor tests demonstrate that the developed ceramic composites have high stability in harsh environments, and can be used as high-temperature wide-band microwave absorbing structural materials. |
| first_indexed | 2024-04-11T00:22:54Z |
| format | Article |
| id | doaj.art-6d1e9b21f42442b782e93a8e8f25ca92 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-11T00:22:54Z |
| publishDate | 2023-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-6d1e9b21f42442b782e93a8e8f25ca922023-01-08T12:11:20ZengNature PortfolioScientific Reports2045-23222023-01-0113111710.1038/s41598-023-27541-3Polymer-derived SiOC reinforced with core–shell nanophase structure of ZrB2/ZrO2 for excellent and stable high-temperature microwave absorption (up to 900 °C)Yujun Jia0Ni Yang1Shaofan Xu2Alexander D. Snyder3Jason F. Patrick4Rajan Kumar5Dajie Zhang6Chengying Xu7Department of Mechanical and Aerospace Engineering, North Carolina State UniversityDepartment of Mechanical and Aerospace Engineering, North Carolina State UniversityDepartment of Mechanical and Aerospace Engineering, North Carolina State UniversityDepartment of Civil, Construction, and Environmental Engineering, North Carolina State UniversityDepartment of Civil, Construction, and Environmental Engineering, North Carolina State UniversityFAMU-FSU College of Engineering, Florida State UniversityDepartment of Materaials Science and Engineering, The Johns Hopkins UniversityDepartment of Mechanical and Aerospace Engineering, North Carolina State UniversityAbstract Microwave absorbing materials for high-temperature harsh environments are highly desirable for aerodynamically heated parts and engine combustion induced hot spots of aircrafts. This study reports ceramic composites with excellent and stable high-temperature microwave absorption in air, which are made of polymer-derived SiOC reinforced with core–shell nanophase structure of ZrB2/ZrO2. The fabricated ceramic composites have a crystallized t-ZrO2 interface between ZrB2 and SiOC domains. The ceramic composites exhibit stable dielectric properties, which are relatively insensitive to temperature change from room temperature to 900 °C. The return loss exceeds − 10 dB, especially between 28 and 40 GHz, at the elevated temperatures. The stable high-temperature electromagnetic (EM) absorption properties are attributed to the stable dielectric and electrical properties induced by the core–shell nanophase structure of ZrB2/ZrO2. Crystallized t-ZrO2 serve as nanoscale dielectric interfaces between ZrB2 and SiOC, which are favorable for EM wave introduction for enhancing polarization loss and absorption. Existence of t-ZrO2 interface also changes the temperature-dependent DC conductivity of ZrB2/SiOC ceramic composites when compared to that of ZrB2 and SiOC alone. Experimental results from thermomechanical, jet flow, thermal shock, and water vapor tests demonstrate that the developed ceramic composites have high stability in harsh environments, and can be used as high-temperature wide-band microwave absorbing structural materials.https://doi.org/10.1038/s41598-023-27541-3 |
| spellingShingle | Yujun Jia Ni Yang Shaofan Xu Alexander D. Snyder Jason F. Patrick Rajan Kumar Dajie Zhang Chengying Xu Polymer-derived SiOC reinforced with core–shell nanophase structure of ZrB2/ZrO2 for excellent and stable high-temperature microwave absorption (up to 900 °C) Scientific Reports |
| title | Polymer-derived SiOC reinforced with core–shell nanophase structure of ZrB2/ZrO2 for excellent and stable high-temperature microwave absorption (up to 900 °C) |
| title_full | Polymer-derived SiOC reinforced with core–shell nanophase structure of ZrB2/ZrO2 for excellent and stable high-temperature microwave absorption (up to 900 °C) |
| title_fullStr | Polymer-derived SiOC reinforced with core–shell nanophase structure of ZrB2/ZrO2 for excellent and stable high-temperature microwave absorption (up to 900 °C) |
| title_full_unstemmed | Polymer-derived SiOC reinforced with core–shell nanophase structure of ZrB2/ZrO2 for excellent and stable high-temperature microwave absorption (up to 900 °C) |
| title_short | Polymer-derived SiOC reinforced with core–shell nanophase structure of ZrB2/ZrO2 for excellent and stable high-temperature microwave absorption (up to 900 °C) |
| title_sort | polymer derived sioc reinforced with core shell nanophase structure of zrb2 zro2 for excellent and stable high temperature microwave absorption up to 900 °c |
| url | https://doi.org/10.1038/s41598-023-27541-3 |
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