Journal
VACUUM
Volume 182, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.vacuum.2020.109772
Keywords
Cold spraying; Aluminum coating; High current pulsed electron beam; Remelting; Friction; Corrosion
Funding
- National Natural Science Foundation of China [51401201]
- Liaoning Innovative Talents Support Plan [LR2017052]
- University of Science and Technology Liaoning Talent Project [601011507-07]
- Innovation Team of University of Science and Technology Liaoning [2017TD04]
- Fundamental Research Foundation for Universities of Heilongjiang Province [LGYC2018JC035]
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High current pulsed electron beam (HCPEB) was employed to irradiate cold spraying aluminum coating. The microstructures, tribological and corrosion behaviors of the untreated and irradiated samples were investigated by the X-ray diffraction (XRD), scanning electron microscope (SEM), ball-disc wear and electrochemical tests. HCPEB irradiation significantly triggered the surface remelting and densification of the coating texture. Compared with the original coating, the irradiated coating showed a higher hardness of up to 88 HV, a higher compressive stress value of 31 MPa and a lower wear rate of 1.06 x 10(-4) mm(3) N-1 m(-1), but also exhibited an outstanding anti-corrosion performance, reflected by a higher polarization resistance and a smaller corrosion current density of 4.45 mu A/cm(2). These current findings confirmed that HCPEB irradiation shows a huge potential for enhancing the anti-corrosion and anti-wear properties of cold spray coatings.
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