The influences of micro-particles on ultrasonic cavitation erosion of Ti6Al4V alloy in 0.1M HSO solution were investigated using mass loss weight, scanning electron microscopy (SEM) and white light interferometer. Mass loss results revealed that the cavitation erosion damage obviously decreased with increasing particle size and mass concentration. Open circuit potential recorded during cavitation erosion shifted to positive direction with the decreased mass loss. Meanwhile, the mass loss sharply decreased with applying a positive potential during the entire ultrasonic cavitation erosion, and the relationship between the open circuit potential and the cavitation erosion resistance was discussed.

C17H14N2O6S·C3H7NO, triclinic, P 1 ‾ $P\overline{1}$ (no. 2), a = 5.4146(4) Å, b = 11.7925(8) Å, c = 16.9527(12) Å, α = 85.238(2)°, β = 86.674(4)°, γ = 78.959(2)°, V = 1057.77(13) Å3, Z = 2, R gt (F) = 0.0418, wR ref (F 2) = 0.1175, T = 296(2) K.

The Mg–Zn binary alloys prepared by vacuum evaporation were investigated in the initial state and after hot extrusion. The results of X-ray diffraction reveal that the composition of initial state alloys are α-Mg solid solution, MgZn, Mg7Zn3, and MgZn2 intermetallic compounds, respectively. As the compression treatment at the 360 °C (40 min, 10 Mpa), the size of the gray α-Mg phase is reduced from 100 μm to about 50 μm, which is surrounded by white intermetallic. At the same time, the corrosion current density is remarkably reduced, which means that the corrosion performance of the alloy is better. When the hot extrusion time raised from 4 h to 12 h (320 °C, 10 Mpa), the area of the deformation zone increased, and the precipitation amount of Mg7Zn3 distributed α-Mg matrix phases increased. Both the value of CPE1 and Rct are significantly reduced, indicated that the charge harder to transfer and the corrosion resistance of the alloy in Ringer's solution is weakened.