Microstructural Evolution of CoNiCrAlY-YSZ Coating in Electron Beam Physical Vapor Deposition
| Autor: | Hee-Jin Park, Hee-Soo Kang, Kyeong-Ho Baik, Chang-Hyun Park |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
Hybrid physical-chemical vapor deposition Vapor pressure Ion plating Metals and Alloys engineering.material Electron beam physical vapor deposition Surfaces Coatings and Films Electronic Optical and Magnetic Materials Pulsed laser deposition Coating Modeling and Simulation engineering Thin film Composite material Electron beam-induced deposition |
| Zdroj: | Korean Journal of Metals and Materials. 51:497-503 |
| ISSN: | 2288-8241 1738-8228 |
| DOI: | 10.3365/kjmm.2013.51.7.497 |
| Popis: | In this study, the microstructural evolution of CoNiCrAlY-YSZ duplex coating manufactured by electron beam physical vapor deposition (EB-PVD) was investigated in terms of surface and cross-sectional morphology, local distribution of alloying elements and constitutive phases. A defect-free, well-bonded CoNiCrAlY coating was formed at substrate temperatures beyond 600 °C. A higher substrate temperature promoted the growth or coalescence of CoNiCrAlY columnar grains, resulting in a rougher surface. Nonuniform distribution of alloying elements in the CoNiCrAlY coating occurred along the coating thickness, which was mainly attributed to the different equilibrium vapor pressure of the alloying elements. Both CoNiCrAlY and YSZ coatings formed a well-defined columnar grain structure which grew in the direction perpendicular to the substrate surface. †(Received November 20, 2012) |
| Databáze: | OpenAIRE |
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