OXIDATION, INTERGRANULAR CORROSION AND DECARBURISATION PREVENTION IN HEAT TREATMENT

Coatings Solve Descaling Problems. Formidable problems of oxidation and scale formation are encountered in the heat treatment of creep‐resistant and heat‐resistant metals which demand lengthy descaling operations after treatment, or the use of controlled‐atmosphere or vacuum furnaces. Within the last two years, however, Rolls‐Royce Ltd. have developed protective coatings which, as a result of subsequent co‐operation with F. W. Berk & Co. Ltd., are available under the name of Berkatekt for protecting the metals from oxidation, intergranular corrosion and decarburisation during treatment.