| 초록 |
SiC coating on Carbon/Carbon (C/C) composites is a widely used technique to provide improved oxidation resistance at high temperatures. However, thermomechanical stability at the SiC-C/C interfaces have been an issue owing to the fundamental differences in thermal expansion characteristics. To enhance the thermomechanical stability at the C/C-SiC interface, 1-dimensional vertically aligned carbon rods array were placed by using electrostatic spray deposition (electrospray) technique. In order to form the structure, phenolic resin precursors with controlled rheology were electrosprayed on C/C substrates and subsequently carbonized in a vacuum furnace. Chemical vapor deposited SiC filled and covered the carbonized rods array to form C/C-SiC composites consisting structured interfaces. The 1-D carbon structured interfaces were effective to reduce residual stress which resulted in improved interface stability during the high temperature expose. |
