微合金化对高锰奥氏体钢在酸性盐雾环境下的耐蚀性能影响研究

常雪婷, 宋嘉琪, 王冰, 王东胜, 陈文聪, 王海丰

Effect of Micro-alloying with Cr, N and Al on Corrosion Resistance of High Manganese Austenitic Steel in Acidic Salt Spray Environment

CHANG Xueting, SONG Jiaqi, WANG Bing, WANG Dongsheng, CHEN Wencong, WANG Haifeng

表3 盐雾腐蚀不同时间后微合金化高锰钢等效电路拟合结果

Table 3 Equivalent circuit fitting results of WH-HMS after salt spray corrosion with different corrosion time

Salt spray time / h RS / Ω·cm² Qf / S n ·Ω-1·cm-2 n1 Rf / Ω·cm² Qdl / S n ·Ω-1·cm-2 n2 Rct / Ω·cm² 12 8.508 8.170 × 10-4 0.728 274 2.098 × 10-3 0.357 2600 48 8.767 1.181 × 10-3 0.693 855 6.777 × 10-3 0.792 270.6 96 10.38 6.790 × 10-4 0.769 1003 7.362 × 10-3 0.729 272.5 168 9.756 8.407 × 10-4 0.742 786.9 4.015 × 10-3 0.418 447.0 240 15.84 5.690 × 10-4 0.726 34.03 5.223 × 10-5 0.949 2077