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用自制的高精度单摆划痕装置,分别测量了Ti6Al4V合金在空气以及0.5mol/LH2SO4溶液中于不同腐蚀电位下腐蚀和腐蚀磨损过程中的比能耗、材料流失量、摩擦系数和动态硬度等.用离子探针测定了划痕表面的氢含量.用SEM观察了划痕的形貌.结果表明,磨损将诱导氢在磨损表面的富集,使材料流失单位体积所消耗的能量降低从而使剪应力作用下的表面裂纹更容易形核和扩展.
The specific energy consumption, material loss, friction coefficient and dynamic state of Ti6Al4V alloy in air and in 0.5 mol / LH2SO4 solution at different corrosion potentials were measured with a self-made high-precision monoclinic scratch device Hardness and so on. The ionic content of the surface of the scratches was measured with an ion probe. The morphology of scratches was observed by SEM. The results show that the wear will induce the enrichment of hydrogen on the wear surface and reduce the energy consumed by material loss per unit volume so that the surface cracks under the shear stress can be more easily nucleated and expanded.