Experimental Study on the Influence of Sulfate Reducing Bacteria on the Metallic Corrosion Behavior under Disbonded Coating

Table 2

The electrochemical parameters.

Simulated solution	Experiment; time	Stripping depths/mm	The corrosion current density/A/cm^2	The self-corrosion potential/mV	The ratio of anode Tafel slope and cathode Tafel slope
Soil simulated solution; (No. 1)	1 d	0	23.1029	−702	1.7328
		80	19.2514	−722	1.6538
		160	11.5943	−718	1.5963
	7 d	0	43.7829	−708	1.5726
		80	30.3086	−722	1.5250
		160	26.0457	−725	1.4844
	14 d	0	45.2457	−701	1.4111
		80	32.3429	−717	1.4049
		160	27.7543	−723	1.4831
Soil simulated solution +; SRB; (No. 2)	1 d	0	25.8171	−688	1.8134
		80	20.2457	−696	1.6897
		160	19.5143	−700	1.6727
	7 d	0	30.9143	−688	1.7509
		80	28.4971	−692	1.7250
		160	21.7143	−695	1.6395
	14 d	0	78.5143	−675	1.7515
		80	87.6457	−680	1.2216
		160	95.4914	−676	1.0870
Soil simulated solution +; SRB +; fungicide; (No. 3)	1 d	0	16.3886	−694	1.9859
		80	19.0400	−692	1.4779
		160	21.2457	−696	1.3274
	7 d	0	32.4343	−698	1.6243
		80	40.1143	−732	1.4063
		160	43.4286	−691	1.4588
	14 d	0	45.6114	−684	1.4157
		80	58.8800	−689	1.4475
		160	64.1714	−684	1.4206