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Abstract Graphene nanoplatelets (0.5–1 wt. %) reinforced nickel aluminium (NiAl) coating has been fabricated using shroud plasma spray technique in a quest to achieve an optimized strength-ductility combination. Implementation of an… Click to show full abstract
Abstract Graphene nanoplatelets (0.5–1 wt. %) reinforced nickel aluminium (NiAl) coating has been fabricated using shroud plasma spray technique in a quest to achieve an optimized strength-ductility combination. Implementation of an inert shroud atmosphere led to the retention of GNPs in the coatings. XPS results confirmed the presence of 62% sp2 C C bond in NiAl-1GNP coatings. In-situ tensile tests were conducted on the free standing coatings to understand the strengthening and deformation mechanisms offered by the GNP reinforcement. NiAl-GNP coatings showed 60% higher tensile strength and 25% improved ductility on mere addition of 1 wt. % GNP. Shearing and tearing of GNPs is also observed which aids to strengthening.
Journal Title: Journal of Alloys and Compounds
Year Published: 2018
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