Ability of the examined surface to the specific interactions is obtained from the specific component of the Gibbs free energy
of adsorption, [DELTA][G.
The Gibbs free energy
for this process can be estimated by,
Step (4) already corresponds to spontaneous physicochemical reactions, to separation of collective states into individual ones, and to the decrease of Gibbs free energy
However, the driving force in any reaction is the desire to reduce the Gibbs free energy
in a system (G).
To understand the chemical erosion of the refractory due to iron oxide attack, the various forms of iron oxide must be identified and classified according to Gibbs Free Energy
of Formation at a given iron melting temperature (Table 1).
This leads us to the Gibbs free energy
G, (not to be confused with shear modulus G) which defines the maximum work a process can perform under a constant pressure thus;