On a New Type Sharpness Tester for Razor Blades

Activities of FexO in complex slags used during the final stages of external dephosphorization of hot metal

“…where E is cell voltage, R is the gas constant, T is temperature, F is the Faraday constant, and Po is the oxygen partial pressure at which the ionic and n-type electronic conductivities are equal [Po = 7.1·10- 14 Pa at 1673K 13 ) ]. The oxygen partial pressure of the reference electrode, P0 2 (ref.…”

Chemical potentials of oxygen within four‐phase assemblages of the system CaO–SiO2–Al2O3–FeO

“…9, a . Equation (7) for C + C 2 S + C 3 A + L involve both sets of data, i.e., points 1 and "2." Between 1523 and 1700 K, the following expression was derived for C + C 2 S + C 3 A + L with a correlation factor (r 2 ) of 0.91:…”

“…where T is temperature, E t is thermal-emf between Mo (positive) and Fe (negative), R is the gas constant, F is the Faraday constant, P O 2 (slag) is the equilibrium oxygen partial pressure at the slag electrode, and Pe is the oxygen partial pressure at which the ionic and n-type electronic conductivities of zirconia electrolyte are equal. Values for this parameter were taken from Iwase et al [7]: log(P e /atm) = 20.40 − 6.45 × 10 4 /(T/K).…”