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Improved thermal expansion performance of Aluminum/polysiloxane/glass coatings with low infrared emissivity by zinc powder
- Source :
- Infrared Physics & Technology. 110:103458
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- Thermal expansion performance of Aluminum/polysiloxane/glass coatings with low infrared emissivity was improved by adding zinc powder. The influences of zinc powder on phase structure, composition, surface microstructure, thermal expansion, adhesion and infrared radiation of Aluminum/polysiloxane/glass coating was systematically studied. The thermal mechanical analysis indicated that thermal expansion coefficient can be adjusted by adding zinc powder in the coating. The tensile strength test results show that the matching of the thermal expansion could improve the adhesion strength of the coatings. As a result, compared with the coating without zinc powder, the adhesion strength was enhanced by 2.0 ± 0.4 MPa when the heat treatment temperature at 450 and 500 °C, and increased by 3.0 ± 0.4 MPa at 550 °C. Simultaneously, average infrared emissivity value of the coating with good thermal stability was about 0.20 in the 3–5 μm wavebands, and approximately 0.34 within 8–14 μm after heated at 550 °C. These results indicated that the good thermal expansion performance and low infrared emissivity coatings were obtained by adding zinc powder.
- Subjects :
- Materials science
chemistry.chemical_element
02 engineering and technology
Zinc
engineering.material
021001 nanoscience & nanotechnology
Condensed Matter Physics
Microstructure
01 natural sciences
Atomic and Molecular Physics, and Optics
Thermal expansion
Electronic, Optical and Magnetic Materials
010309 optics
Coating
chemistry
0103 physical sciences
Ultimate tensile strength
engineering
Emissivity
Thermomechanical analysis
Thermal stability
Composite material
0210 nano-technology
Subjects
Details
- ISSN :
- 13504495
- Volume :
- 110
- Database :
- OpenAIRE
- Journal :
- Infrared Physics & Technology
- Accession number :
- edsair.doi...........87573dbabbdef16617495f37c092d2de