​Microstructural engineering to avoid explosive spalling

- Jun 14, 2018-

Several efforts can be carried out to increase the materials' ability to withstand a more aggressive dry-out. They involve incorporating low melting point fibers, such as polypropylene, or oxidizing metallic powders (e.g. aluminium powder) to provide permeable paths to deliver the vapor to the atmosphere, thereby relieving the internal pressure. Another option is to mechanically reinforce the microstructure so the material can dissipate enough energy with the beginning of crack growth, avoiding explosion.