DISPERSED METAL-OXIDES AS INHIBITORS OF STEEL HYDROGENATION DURING CHROMIUM ELECTROPLATING

Highly dispersed metal oxides are shown to inhibit hydrogenation of st eel during its chromium plating in chrome solution. Optimum conditions for preparing suspensions that provide for minimum hydrogenation of t he base metal and coating are developed. The coefficients of correlati on between hydrogenation and mechanical performance of steel, and also with thermodynamic and quantum-chemical parameters characterizing rea ction activity and adsorption properties of oxides are calculated. The decisive role of chemical interaction of adsorbed additives with atom ic hydrogen and the possibility of forecasting the effectiveness of hy drogenation inhibitors by calculating thermodynamic and electronic par ameters of molecules is shown.