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Applied Research Outcomes

Single Atom Nanomaterials Metallic Glass Nanomaterials High-Entropy Alloys Anode and Cathode Materials for Batteries Energy Storage Materials Graphene Liquid Metal/Diamond Metal Oxide Anodes Functional Films Electrode Materials Catalysts Synthesis of Nanomaterials and Photo/Electrocatalytic Applications Photocatalytic Materials Environmental Remediation Solid Waste Treatment Water Treatment Functional Materials Oil-Water Separation Functional Materials Ceramic Materials Superhard Materials and Products Materials Surface Engineering Metal Surface Engineering and Coating Protection Technology Advanced Materials Joining Technology 3D Printing and Additive Manufacturing Technology Metal Matrix Composites Material Fatigue and Fracture

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《Fe2Al5 formation in the cold-sprayed Al coatings on steel by ultra-fast Joule heating》

Authors：Ruitao Li, Yufang Liu, Weili Liu, Hua Li, Hong Liu.

In this study, Al-based composite coatings reinforced with Al-Fe intermetallic were prepared by ultra-fast Joule heating of cold-sprayed Al coatings on AISI 1045 steel. The plate Fe2Al5 was formed both at the Al-Fe interface and within the cold-sprayed Al coating. It is proposed that both the ultra-fast Joule heating and the unique defects distribution within the cold-sprayed coating were responsible for the formation of Fe2Al5 in the cold sprayed Al coatings. After the ultra-fast Joule heating, the more severely deformed regions in the cold-sprayed coatings had higher Fe concentration, which promoted the formation of Fe2Al5 in these areas. The in-situ formation of Fe2Al5 greatly improves the microhardness and wear resistance of the cold-sprayed Al coating.