Microstructure and properties of friction and wear of Al-Pb alloy coatings by high current pulsed electron beam cladding

To improve the surface hardness and wear resistance of Al-Pb alloys, pure aluminum (Al) surfaces coated with lead (Pb) layers were irradiated by using high current pulsed electron beam (HCPEB) to prepare Al-Pb alloyed layers with excellent properties. The surface roughness of the alloying layer was...

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Bibliographic Details
Published inCai liao gong cheng = Journal of materials engineering Vol. 51; no. 3; pp. 145 - 155
Main Authors Zhu, Huajun, Tian, Nana, Zhang, Conglin, Guan, Qingfeng
Format Journal Article
LanguageChinese
Published Beijing Beijing Institute of Aeronautical Materials 01.03.2023
Journal of Materials Engineering
Subjects
al-pb alloy coating
Alloys
Aluminum
Coefficient of friction
Crystal dislocations
Crystal lattices
Electron beams
Electron irradiation
Electron microscopy
Emission analysis
Field emission microscopy
High current
high current pulsed electron beam cladding
Lattice parameters
Metallurgy
Microhardness
Microscopy
Microstructure
Phase composition
property
Protective coatings
Solid solutions
Substrates
Surface alloying
Surface hardness
Surface properties
Surface roughness
Thickness
Wear mechanisms
Wear resistance
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Summary:To improve the surface hardness and wear resistance of Al-Pb alloys, pure aluminum (Al) surfaces coated with lead (Pb) layers were irradiated by using high current pulsed electron beam (HCPEB) to prepare Al-Pb alloyed layers with excellent properties. The surface roughness of the alloying layer was observed by 3D laser scanning microscope (LSM). Meanwhile, the micro morphology, structure and element distribution of Al-Pb coating before and after irradiation alloying were analyzed by field emission scanning electron microscopy (SEM) with energy dispersive spectrometer (EDS). In addition, the phase composition of the alloy layer was observed by X-ray diffraction (XRD). Moreover, the surface microstructure after alloying was characterized by transmission electron microscopy (TEM). Finally, the microhardness, average friction coefficient and wear rate of the sample surface before and after irradiation were tested, and the hardness and wear enhancement mechanism were analyzed. The strengthening mechanism of the su
ISSN:1001-4381
DOI:10.11868/j.issn.1001-4381.2021.001002