Microstructural aspects of the protective ceramic coatings applied on the surfaces of refractory alloys produced by additive manufacturing
| Autor: | Laurentiu Mosinoiu, Arcadii Sobetkii, Mircea Corban, Gheorghe Matache, Alexandru Paraschiv, Radu Robert Piticescu |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Alloy 02 engineering and technology Substrate (electronics) engineering.material 01 natural sciences Industrial and Manufacturing Engineering ni-base superalloys lcsh:Manufactures lcsh:Technology (General) 0103 physical sciences Ceramic Selective laser melting Composite material eb-pvd Yttria-stabilized zirconia 010302 applied physics ceramic coatings 021001 nanoscience & nanotechnology Evaporation (deposition) slm Superalloy scratch test lcsh:TA1-2040 visual_art visual_art.visual_art_medium engineering lcsh:T1-995 lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology Layer (electronics) lcsh:TS1-2301 |
| Zdroj: | Manufacturing Review, Vol 7, p 33 (2020) |
| ISSN: | 2265-4224 |
| Popis: | The possibility of depositing multi layers made of metals/alloys and high temperature ceramics by electron beam physical evaporation process under high vacuum (EB-PVD) on the surface of a parallelepiped sample made by selective laser melting (SLM) from a Ni base refractory super alloy was experimentally tested. The SEM-EDAX micro structural analysis revealed the morphology and thickness of the coatings consisting of a NiCrAlY base alloy as bonding layer and three successive YSZ, LZO and GZO ceramic layers on the Ni-based super alloy substrate obtained by additive manufacturing. The adhesion of the layer deposited was evaluated by the scratch test method. The analysis highlighted the importance of pre-preparing the surface of the additive manufactured substrates, in order to control the adhesion and uniformity of the deposited layers. |
| Databáze: | OpenAIRE |
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