Blistering and Hydraulic Removability of Scale Films of Rimmed Steel at High Temperature
1979 Volume 65 Issue 6 Pages 599-607
Details
1979 Volume 65 Issue 6 Pages 599-607
Under the protection from the oxidation, rimmed steel plates are heated to temperatures between 800°C and 1250°C. Then they are oxidized in air for very short periods. Blistering and hydraulic removability of scale films of them are studied.
Blisters, which are caused by the compressive stresses such as oxide growth stress and thermally induced stress, are small round spots at first, and they grow rapidly. The periods from the start of oxidation to the appearance of blisters are measured at various conditions.
The removability of scale films is measured by the water jet of 1, 4 and 15kg/cmcm2. Scale films with some blisters are removed readily by the water jets.
Based on the above results, the cohesion or adhesion of scale films at high temperature is discussed.
