The effect of Re and Hf interaction on the oxidation performance in ReHf co-doped NiAl coating
Source abstract
Abstract
Re-NiAl, Hf-NiAl and ReHf-NiAl coatings were fabricated and the interaction of Re and Hf was investigated. Re and Hf segregated together in ReHf-NiAl coating, and the co-precipitations phase in ReHf co-doped coating were verified as Hf 5Re 24 and Hf 5Al 3 after annealing. The formation of these precipitations further slowed down the growth rate of oxide scales. The dispersion and refinement of Hf by Re prevented the formation of spinel. The interaction mechanism of Re and Hf during annealing and oxidation process were discussed.
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Research context
OpenAlex topics: High-Temperature Coating Behaviors · Catalytic Processes in Materials Science · Intermetallics and Advanced Alloy Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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