图3. Q345q钢在3种介质中腐蚀不同时间的锈层宏观形貌
Fig.3. Macrographs of the rust scale formed on Q345q steel corroded for 24 h (a, f, k), 72 h (b, g, l), 144 h (c, h, m), 288 h (d, i, n) and 480 h (e, j, o) in deicing salt (a~e), NaHSO3 (f~j) and mixed solution (k~o)