Microstructure and properties of YSZ-Al2O3 functional ceramic thermal barrier coatings for military applications
| Autor: | Krishnaswamy Marimuthu, Mari Ramesh, L. Rajeshkumar, Palanisamy Karuppuswamy |
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| Rok vydání: | 2022 |
| Předmět: |
Materials science
Microstructure Industrial and Manufacturing Engineering Thermal barrier coating Field emission microscopy Mechanics of Materials Scratch visual_art Ceramics and Composites visual_art.visual_art_medium Surface roughness Ceramic Composite material Deformation (engineering) computer Yttria-stabilized zirconia computer.programming_language |
| Zdroj: | Boletín de la Sociedad Española de Cerámica y Vidrio. 61:641-652 |
| ISSN: | 0366-3175 |
| DOI: | 10.1016/j.bsecv.2021.06.004 |
| Popis: | Current study renders its focus on the investigation of functionally graded Yttria Stabilized Zirconia (YSZ) and alumina (Al2O3) thermal barrier coatings (TBC) deposited on EN steel substrates used in gun barrel through atmospheric plasma spray (APS) process. A bond coat and the top coats was made with two distinct compositions using YSZ-Al2O3 in 75:25 and 50:50 weight ratio through APS process with two carrier gas concentrations of 3 and 4 standard cubic feet per hour (scfh). Coatings were characterized with thermal testing, X-ray Diffraction (XRD) and Field Emission Scanning Electron Microscope examination (FESEM). Surface roughness test, wear and scratch test of the uncoated and coated steel specimens was also measured. YSZ-Al2O3 coated EN36C steel possessed greater insulation performance under a carrier gas flow rate of 3 scfh compared to all other specimens. EN36C steel coated with YSZ-Al2O3 in the ratio of 75:25 has better wear and scratch resistance indicating lesser deformation compared to other materials. |
| Databáze: | OpenAIRE |
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