抄録
Low-energy electron beam (EB) irradiation is a successful surface treatment. It generally enhanced stiffness and wear resistance of polymer utilized for common industrial articles. The EB irradiation induced strengthening of impact test was found for acrylic acid resin as well as silicate glasses. When EB irradiation generates dangling bonds at the weaker-bonded metal-oxygen atomic pairs in the nano-scale glassy structure, partial relaxation occurs at points of residual strain in the network structure, resulting in improvement of Charpy impact value of acrylic acid resin as well as silicate glasses. Furthermore, the EB irradiation induced hardening was also found for crystalline chromium plating sheets at surface. Since EB irradiation generates lattice defects of including point defect, stacking faults and sessile and mobile dislocations in crystalline metals. Since the defects disordered the crystal lattice perfection, it is difficult to move the mobile dislocations at surface region, resulting in enhancement of Vickers' hardness at small load of metals.
