Table 4 The upper and lower limits of the independent variables

From: Establishing a pre-passivation method to improve the corrosion resistance of B30 alloy in deep-sea environment

Independent variable

Lower limit

Upper limit

BTA (g/L)

4

20

Sulfosalicylic acid (g/L)

1

5

H2O2 (ml/L)

10

30

Temperature (°C)

25

50

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