Abstract
� 2017 Elsevier Ltd In this study, NiCrAlY coatings were additively manufactured on the surface of IN738 substrate through a laser-aided additive manufacturing approach. The high-temperature oxidation behavior of freestanding coatings at 1200��C was also investigated. The coatings were thick, dense, and well-bonded with dendritic γ/β microstructure. The results proved that the coatings were able to withstand the operating temperature of 1200��C for up to ten cycles. After ten cycles of oxidation, the oxide scales formed on the coatings were mainly composed of α-Al2O3and Al5Y3O12phases; however, NiO, Cr2O3and Ni(Cr,Al)2O4phases were not detected.
Original language | English |
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Pages (from-to) | 168-177 |
Number of pages | 10 |
Journal | Corrosion Science |
Volume | 118 |
DOIs | |
Publication status | Published - 1 Apr 2017 |
Keywords
- A. Metal coatings
- A. Superalloys
- C. High temperature corrosion
- C. Oxidation
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering
- General Materials Science