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In order to improve corrosion resistance and scratch resistance of NdFeB magnet, AlN/Al multilayered coatings were deposited on the surface of the magnet by magnetron sputtering. During deposition, the modulation periods were made at λ=10nm, λ=20nm, λ=40nm and λ=100nm, respectively. Al and AlN are well crystallized in the multilayered coatings. The coatings become dense and smooth with the decrease...
Pure Al coatings were deposited by direct current (DC) magnetron sputtering to protect sintered NdFeB magnets. The effects of Ar + ion-beam-assisted deposition (IBAD) on the structure and the corrosion behaviour of Al coatings were investigated. The Al coating prepared by DC magnetron sputtering with IBAD (IBAD-Al-coating) had fewer voids than the coating without IBAD (Al-coating). The corrosion...
Pure aluminium coating was deposited on sintered NdFeB magnets by direct current (DC) magnetron sputtering to improve the corrosion resistance. The corrosion behaviour of sintered NdFeB coated with aluminium was characterized by potentiodynamic polarization measurement. The adhesive strength between the aluminium coating and the sintered NdFeB was characterised by vertical tensile test and high-low...
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