iternational Journal of Applied Ceramic Technology-Naslain Vol.2,No.2,2005 C-SiC shingle antenna RF recevltrans nstrated 1100C C-Sic wing shingle TPs shingle TPS plasma fest 1350C C-SIC box ass C-SiC elevons body nap Fig 4. Potential applications of Sic-matrix composite materials: (a)in spacecraft hot structure and(b) in aerojet engine. Adapted from Christin se Braking systems is another field of applications. Up near the ambient temperature are altered in wet atmos- until recently, aircraft and racing car disk brakes were phere and their wear is significant. It has been proposed fabricated with C/C composites sliding against them- recently to replace part of the C-matrix by a SiC-based selves(disk/disk or disk/pad configuration). C/C brakes matrix,the new matrix being formed by a combination display, relative to conventional steel disk brakes, a low of carbon-PIP and SiC (Si)-RMI techniques, as depicted er density, a higher service temperature(and hence im- previously. 4.35 Coated C/SiC (Si)brake disks, sliding proved security), good friction properties at HT, and against themselves or pads(organic or metallic), show a longer lifetime. Conversely, their friction properties higher coefficient of friction less depending on moistureBraking systems is another field of applications. Up until recently, aircraft and racing car disk brakes were fabricated with C/C composites sliding against them￾selves (disk/disk or disk/pad configuration). C/C brakes display, relative to conventional steel disk brakes, a low￾er density, a higher service temperature (and hence im￾proved security), good friction properties at HT, and longer lifetime. Conversely, their friction properties near the ambient temperature are altered in wet atmos￾phere and their wear is significant. It has been proposed recently to replace part of the C-matrix by a SiC-based matrix, the new matrix being formed by a combination of carbon-PIP and SiC (Si)-RMI techniques, as depicted previously.34,35 Coated C/SiC (Si) brake disks, sliding against themselves or pads (organic or metallic), show a higher coefficient of friction less depending on moisture Fig. 4. Potential applications of SiC-matrix composite materials: (a) in spacecraft hot structure and (b) in aerojet engine. Adapted from Christin.30 82 International Journal of Applied Ceramic Technology—Naslain Vol. 2, No. 2, 2005