Table 4 Gravimetric parameters for Copper in 1.0 M HCl solution with and without AFM extract (250 mg L–1) at various temperatures.

From: Thermodynamic, chemical, and electrochemical studies of Aloe ferox Mill extract as a naturally developing copper corrosion inhibitor in HCl solution

Temperature (K)

AFM extract

CR (μg cm–2 h–1)

ηW (%)

298

0

54.9

–

 + 

4.9

91.0

313

0

57.3

–

 + 

6.1

89.3

323

0

63.8

–

 + 

11.3

82.2

333

0

75.2

–

 + 

15.8

78.9

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