Mechanical,electrochemical and tribological properties of nanocrystal line surfaces of abrassalloy(7030)produced by sand blasting and an nea领 we reinvestigated.The grains izeofa nanocrystal line surface wasdeter minedby means of optical microscopy and transmissionelectron microscopy.There lation ships betweent hegrainsize of asurface and it sproperties we reinvestigate dusingnano-ymicro-indentation,micro-scratch,electrochemical scratch and polarization techniques.It was demonstrated thatt hesur face hardness and elastic behavior we reimprovedas the grainsize decreased,leading tomarked lyenhanced wear resistance.
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