Research on Inhibiting Performance of Compound Corrosion Inhibitors Based on Nitrite

Table 3

Proportion of corrosion inhibitor in repairing test.

	Number	Corrosion inhibitor	Dosage/ml
Brush repair	E	NaNO2	150
Perfusion repair	F	NaNO2	150
	G	Na2HPO4	150
Composite repair	H	NaNO2	75
		Na2HPO4	75

Note: another blank control group, I, is not added with the corrosion inhibitor.