Cyclic oxidation behavior of Al-Si coating on new γ′-strengthened cobalt-based superalloy: Experimental study and first-principles calculation
Source abstract
Abstract
Abstract The aluminide coatings with and without Si modification were prepared on the new γ′-strengthened cobalt-based superalloy using a pack cementation method. Cyclic oxidation of the coated Co-based superalloy was study at 1050 °C. The weight changes of Al coating and Al-Si coating were -4.28 mg/cm2 after 248 cycles and -3.40 mg/cm2 after 346 cycles, respectively. The cyclic oxidation resistance of the Al coating was effectively improved by Si modification. Based on the experimental study and the first-principles calculation, it is suggested that Si addition facilitated the formation of a protective Al2O3+SiO2 film and reduced oxygen diffusion in the coating.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High-Temperature Coating Behaviors · High Temperature Alloys and Creep · Intermetallics and Advanced Alloy Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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