超声表面滚压对AZ31B镁合金腐蚀行为的影响

岳亮亮, 马保吉

Effect of Ultrasonic Surface Rolling Process on Corrosion Behavior of AZ31B Mg-alloy

YUE Liangliang, MA Baoji

表1 两种镁合金试样浸泡不同时间后的阻抗拟合结果

Table 1 Electrochemical parameters obtained by fitting EIS of two type samples after immersion for different time

Sample Time / h Rs / Ω Qf / μF Rf / Ω Qdl / μF Rt / Ω Zw / DW Type 1 2 9.2 49.8 15 805 230.0 --- 24 10.3 79.4 9630 906 29.5 --- 48 7.0 91.5 17000 1790 33.5 --- 96 2.6 204.0 23 210 5440.0 501 144 17.4 82.4 9310 2100 28.6 --- 240 16.7 203.0 21300 966 15.0 --- 360 24.5 76.6 11400 979 25.4 --- Type 2 2 8.3 81.3 9020 338 28.3 --- 24 11.7 87.2 14500 250 19.7 --- 48 11.8 94.1 10800 179 14.9 --- 96 14.0 103.0 19800 238 19.4 --- 144 14.0 67.4 10600 2670 30.5 --- 240 27.3 101.0 15900 656 29.7 --- 360 14.9 86.3 31400 1690 27.8 ---