International Journal of Corrosion / 2013 / Article / Tab 1

Research Article

Inhibition Behaviour of Some Isonicotinic Acid Hydrazides on the Corrosion of Mild Steel in Hydrochloric Acid Solution

Table 1

CR and IE (%) obtained from mass loss measurements of MS in 0.5 M HCl solution containing various concentrations of INIMH and INPMH at different temperatures.

(°C)Concentration (ppm)INIMHINPMH
CR (mg cm−2 h−1)IE (%)CR (mg cm−2 h−1)IE (%)

30Blank0.72000.7200
2000.229668.160.236767.19
3000.187574.000.194773.01
4000.128882.140.135981.15
5000.099886.160.106985.17

40Blank0.94900.9490
2000.320266.240.329665.25
3000.281470.330.290969.33
4000.189580.020.198679.05
5000.157383.410.167282.37

50Blank1.15201.1520
2000.409164.490.421463.41
3000.356269.070.366968.15
4000.247478.520.259177.50
5000.200182.620.210781.70

60Blank1.43501.4350
2000.537662.540.551461.58
3000.455568.270.469367.30
4000.341876.180.356575.16
5000.274580.870.289179.85

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