NiCu低合金钢在含Cl<sup>-</sup>的除氧NaHCO<sub>3</sub>溶液中的腐蚀行为研究

NiCu低合金钢在含Cl^-的除氧NaHCO₃溶液中的腐蚀行为研究

卢云飞, 阳靖峰, 董俊华, 柯伟

THE CORROSION BEHAVIOUR OF NiCu LOW ALLOY STEEL IN A DEAERATED BICARBONATE SOLUTION CONTAINING Cl^- IONS

LU Yunfei, YANG Jingfeng, DONG Junhua, KE Wei

表3 实验材料在浸泡后期的电化学阻抗谱拟合结果

Table 3 Fitted results for EIS data measured during stages II and III

Steel	Time	Y_0,HF	R_e	Y_0,cp	n_cp	R_cp	Y_0,pit	n_pit	R_pit	Y_0,passive	n_passive	R_passive
	d	S·sⁿ·cm^-²	W·cm²	S·sⁿ·cm^-²		W·cm²	S·sⁿ·cm^-²		W·cm²	S·sⁿ·cm^-²		W·cm²
NiCu	16	-	8.882	0.008702	0.6457	2.664	0.002131	0.7883	369.5	0.001638	0.5710	2474
	22	-	8.217	0.003152	0.6947	1.322	0.002105	0.8048	667.7	0.001622	0.5637	5547
	28	-	7.715	0.003001	0.7126	1.181	0.001952	0.8161	463.5	0.001608	0.5709	4979
Q235	24	2.910×10^-⁸	30.98	0.0001203	0.8086	16.73	0.001795	0.6088	1015	0.0001753	0.5611	6451
	32	2.358×10^-⁸	39.29	0.0002296	0.7512	51.99	0.0008616	0.5572	0.1764	0.0003387	0.4057	3412