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Al2O3-modified PS-PVD 7YSZ thermal barrier coatings for advanced gas-turbine engines
- Source :
- npj Materials Degradation, Vol 4, Iss 1, Pp 1-6 (2020)
- Publication Year :
- 2020
- Publisher :
- Nature Publishing Group, 2020.
-
Abstract
- Plasma spray-physical vapor deposition (PS-PVD), called the third-generation method for thermal barrier coatings (TBCs) fabrication, has great potential for their using in gas-turbine engines. Compared to atmospheric plasma spray (APS), called the first-generation TBCs, and electron beam-PVD (EB-PVD), called the second generation, PS-PVD has many interesting features, including non-line sight deposition, high deposition rate, and microstructural flexibility, among others. Such advantages make them a promising approach to prepare thermal barrier coatings for advanced gas-turbine engines. Using PS-PVD, feather-like columnar TBCs with good strain tolerance and low thermal conductivity can be fabricated. However, prior to their application in gas-turbine engines, some disadvantages, such as CMAS (CaO–MgO–Al2O3–SiO2, etc.) corrosion and oxidation resistance, need to be addressed. In this work, a method to develop Al2O3-modified PS-PVD 7YSZ TBCs was proposed. The experimental results demonstrate that the Al2O3-modification process is an effective approach to address the aforementioned weaknesses of traditional PS-PVD 7YSZ TBCs.
- Subjects :
- Materials science
Fabrication
Materials Science (miscellaneous)
Atmospheric-pressure plasma
02 engineering and technology
Plasma
Chemical vapor deposition
021001 nanoscience & nanotechnology
Engineering physics
Corrosion
Thermal barrier coating
020303 mechanical engineering & transports
Thermal conductivity
0203 mechanical engineering
Chemistry (miscellaneous)
Materials Chemistry
Ceramics and Composites
lcsh:TA401-492
Deposition (phase transition)
lcsh:Materials of engineering and construction. Mechanics of materials
0210 nano-technology
Subjects
Details
- Language :
- English
- ISSN :
- 23972106
- Volume :
- 4
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- npj Materials Degradation
- Accession number :
- edsair.doi.dedup.....f583cb5013eb042cadea012b67e871ef