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A bulk and dense nanocrystalline (NC) Ni with a mean grain size of 26 nm and a microhardness of 370–382 HV were fabricated by an electro-deposition technique. The microstructure and microhardness of the NC Ni samples were examined. The friction and wear behavior of the NC Ni samples under dry condition both in air and in vacuum were investigated in comparison with a conventional coarse-grained (CG)...
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