NDLI: Effect of laser remelting on amorphous formation and electrochemical corrosion of laser thermal sprayed Al–Ti–Ni coating

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Effect of laser remelting on amorphous formation and electrochemical corrosion of laser thermal sprayed Al–Ti–Ni coating

Content Provider	Scilit
Author	Haixiang, Chen Dejun, Kong
Copyright Year	2019
Description	Journal: Materials Research Express A laser thermal sprayed Al–Ti–Ni coating was fabricated on S355 structural steel with Al wire–packed Ti and Ni powders, which was processed by laser remelting (LR). The surface and cross–section morphologies, elemental chemicals, crystallization behavior, and phases with their chemical bonding states of obtained coatings were investigated using a scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), different scanning calorimetry (DSC), X–ray diffractometer (XRD), and X–ray photoelectron spectroscopy (XPS), respectively. The effects of LR times on the electrochemical corrosion properties of Al–Ti–Ni coatings were also assessed using a electrochemical workstation. The results show that LR appreciably reduces the surface porosity and improves elemental chemical homogeneity on the Al–Ti–Ni coating surface. The phases after multiple LR remain unchanged in the incomplete crystallized coatings, which are mainly composed of intermetallic compounds of Al3Ni, AlTi, AlFe and AlFe3. The Al–Ti–Ni amorphous coating after LR three times exhibits the lowest corrosion current of 7.068  10–6 A•cm–2 and the largest polarization resistance of 4070 •cm2 in 3.5% NaCl solution, its electrochemical corrosion resistance is the best among three kinds of LR times.
Related Links	https://iopscience.iop.org/article/10.1088/2053-1591/ab18d8/pdf
ISSN	20531591
e-ISSN	20531591
DOI	10.1088/2053-1591/ab18d8
Journal	Materials Research Express
Issue Number	8
Volume Number	6
Language	English
Publisher	IOP Publishing
Publisher Date	2019-04-12
Access Restriction	Open
Subject Keyword	Journal: Materials Research Express Coatings and Films Ni Coating
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Metals and Alloys Biomaterials Electronic, Optical and Magnetic Materials Polymers and Plastics

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