干湿比对CrNiMoV钢在120 mmol/L NH4H2PO4溶液中电化学腐蚀行为的影响

干湿比对CrNiMoV钢在120 mmol/L NH₄H₂PO₄溶液中电化学腐蚀行为的影响

王通, 孟惠民, 郭维华, 葛鹏飞, 巩秀芳, 倪荣, 龚显龙, 戴君, 隆彬, 李全德

Influence of Dry-wet Ratio on Electrochemical Corrosion Behavior of CrNiMoV Steel in 120 mmol/L NH₄H₂PO₄ Solution

WANG Tong, MENG Huimin, GUO Weihua, GE Pengfei, GONG Xiufang, NI Rong, GONG Xianlong, DAI Jun, LONG Bin, LI Quande

表4 1R钢和2R钢在不同浸泡条件实验21 d后的电化学阻抗谱参数

Table 4 Electrochemical impedance spectroscopy parameters of 1R steel and 2R steel aftertest under different immersion conditions for 21 d

Steel	Condition	R_s / Ω·cm²	Q_f		R_f / Ω·cm²	Q_dl		R_ct / Ω·cm²
Steel	Condition	R_s / Ω·cm²	Y₀ / Ω^-1·cm^-2·S ⁿ	$n$	R_f / Ω·cm²	Y₀ / Ω^-1·cm^-2·S ⁿ	n	R_ct / Ω·cm²
1R	Dry/wet=0	80.36	3.19 $\times$ 10^-5	0.31	118.2	5.1 $\times$ 10^-4	0.52	861.9
	Dry/wet=1/3	81.03	2.33 $\times$ 10^-7	0.62	93.03	7.08 $\times$ 10^-4	0.57	585.6
	Dry/wet=1	80.93	3.26 $\times$ 10^-6	0.74	18.11	7.86 $\times$ 10^-4	0.57	539
	Dry/wet=3	79.4	4.7 $\times$ 10^-4	0.76	20.57	6.29 $\times$ 10^-4	0.74	181
2R	Dry/wet=0	85.09	4.76 $\times$ 10^-4	0.65	224.7	5.76 $\times$ 10^-4	0.91	455.7
	Dry/wet=1/3	86.58	3.24 $\times$ 10^-4	0.73	160.3	3.39 $\times$ 10^-4	0.92	297.2
	Dry/wet=1	85.51	3.64 $\times$ 10^-4	0.77	132	3.81 $\times$ 10^-4	0.90	262.4
	Dry/wet=3	82.65	6.02 $\times$ 10^-4	0.76	120.3	7.14 $\times$ 10^-4	0.95	139.1