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4 盐雾腐蚀不同时间后普通高锰钢等效电路拟合结果

Table 4 Equivalent circuit fitting results of PT-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 10.88 1.746 × 10-3 0.666 675.8 7.366 × 10-2 0.957 2.99 × 107 48 11.14 2.205 × 10-4 0.812 6.482 8.638 × 10-4 0.627 982 96 9.832 2.405 × 10-4 0.850 3.578 1.508 × 10-3 0.565 1542 168 14.08 1.057 × 10-3 0.641 63.58 2.639 × 10-5 0.926 1159 240 13.98 5.275 × 10-4 0.648 17.10 5.507 × 10-4 0.664 983.4