Research Article
Electrochemical, Isotherm, and Material Strength Studies of Cucumeropsis mannii Shell Extract on A515 Grade 70 Carbon Steel in NaCl Solution
Table 10
Optimum point prediction by Box-Behnken Design and experimental result at optimum predicted point.
| | Parameter | Optimum predicted value | Corrosion rate (mm/y) | Young modulus (GPa) | Hardness (BHN) | | Pred. | Exp. | Pred. | Exp. | Pred. | Exp. |
| | Temperature () | 32.09°C | 0.141 | 0.137 | 193.81 | 192.16 | 103.07 | 104.48 | | Immersion time () | 1.23 day | — | — | | | | | | Inhibitor concentration () | 7.08 g L-1 | — | — | | | | | | Load () | 24,646.50 N | — | — | | | | |
|
|
