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Low infrared emissivity of a Ti3AlC2 MAX ceramic for high-temperature thermal camouflage.
- Source :
-
Journal of the European Ceramic Society . Aug2024, Vol. 44 Issue 10, p5503-5515. 13p. - Publication Year :
- 2024
-
Abstract
- Thermal camouflage technology can effectively hide an object by lowering its infrared emissivity and reducing its surface temperature. So far, it has been a challenge to realize thermal camouflage at high-temperatures with a single material. Here, we report a Ti 3 AlC 2 MAX phase material that exhibits excellent thermal camouflage properties from room temperature to 500 °C, and maintains a low emissivity of 0.25 at 500 °C, which is difficult to achieve for most metals due to the rapid increase in emissivity caused by oxidation. The thermal camouflage mechanism of Ti 3 AlC 2 was analyzed on the basis of experimental results and first-principles calculations, providing a feasible approach to select other MAX phases (such as Ti 3 SiC 2 , Cr 2 AlC, and Ti 2 AlC) with attractive thermal camouflage performance. Ti 3 AlC 2 and other MAX phases are promising candidates for thermal camouflage applications due to their low emissivity, high-temperature stability, good oxidation resistance and ease of fabrication. [ABSTRACT FROM AUTHOR]
- Subjects :
- *EMISSIVITY
*THERMOGRAPHY
*SURFACE temperature
*THERMAL properties
*CERAMICS
Subjects
Details
- Language :
- English
- ISSN :
- 09552219
- Volume :
- 44
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Journal of the European Ceramic Society
- Publication Type :
- Academic Journal
- Accession number :
- 176686756
- Full Text :
- https://doi.org/10.1016/j.jeurceramsoc.2024.03.043