Elaboration of the engineering procedure for calculation of aluminization modes by means of recycle method

Basic physical and chemical processes of the recycle chemical-thermal treatment are analyzed. The process realization conditions in terms of the irreversible thermodynamics are estimated. It was made possible to calculate the isothermal section of the Al-Cl-Ni diagram at temperature of 1273 K with modern calculation method for chemically reacting systems of an arbitrary composition. The procedure was proposed and calculation performed for phase composition of the surface layer on aluminization of Ni by means of recycle method in dependence on the process main technological parameters.