The nature of cathodic reactions occurring during intergranular corrosion (ICC) on stainless steel 08X18H10T in a solution of 0.5 M H2SO4 + 0.01 M KCNS is considered. Evaluation of the thermodynamic potential of various reactions with components of the solution showed that the ICC process in this system proceeds with mixed oxygen-hydrogen depolarization. When the temperature rises, an intensification of the cathode process occurs, which is associated with a decrease in the overvoltage of the reduction of oxidants. Forced medium movement at low temperatures also facilitates the cathodic process, and at elevated temperatures the effect of convective medium movement decreases. This is due to the decrease in the proportion of oxygen involved in the cathode process, since its concentration in solution increases with increasing temperature.

Keywords: intergranular corrosion, stainless steel, temperature and hydrodynamic conditions

We consider the model of resource allocation for ergodic and semi-ergodic resource networks with valve reachability. Approach for modeling the process of resource reallocation in network with valve reachability is proposed. This approach bases on using of the auxiliary network. Methods for finding the threshold value and the limit state for an arbitrary total resource value in a resource network with valve reachability are developed.

Keywords: resource networks, flows in networks, flow distribution, nonstandard reachability, limit state, threshold