Anodic Dissolution of Spheroidal Graphite Cast Iron with Different Pearlite Areas in Sulfuric Acid Solutions

Table 3

Kinetic parameters of typical mechanisms for iron dissolution reaction.

Pieces of literature	𝑏𝑎	𝑛
Heusler et al. [18–20]	(1/2)⋅(2.3𝑅𝑇/𝐹)	2
Bockris et al. [15]	(2/3)⋅(2.3𝑅𝑇/𝐹)	1
Abdul Azim and Sanad [37]	2.3𝑅𝑇/𝐹	1

Note: 𝑏_𝑎 is the anodic Tafel slope, and 𝑛 is the reaction order with respect to the hydroxyl ion activity.