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Carbon-Ceramic Brakes

Carbon-Ceramic Brakes. Josu é De Lara Bashulto MEEN 3344. Photo Credit: http:// news.caradisiac.com. Carbon Fiber Reinforced Silicon Carbide (C/SiC). C/C Brakes were introduced in aircraft Suffered serious dissadvantages  Low coefficient of friction below 450 C

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Carbon-Ceramic Brakes

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  1. Carbon-Ceramic Brakes Josué De Lara Bashulto MEEN 3344 Photo Credit: http://news.caradisiac.com

  2. Carbon Fiber Reinforced Silicon Carbide (C/SiC) • C/C Brakes were introduced in aircraft • Suffered serious dissadvantages  • Low coefficient of friction below 450 C • High rate of wear for the pads • C/C-SiC • Woven carbon reinforced carbon core material • Thin surface layer of SiC Image:Z. Stadler/Journal of the European Ceramic Society(2006)

  3. Manufacture • Preparation of a C/C composite core • Liquid silicon infiltration • Vacuum • High temperature • SiC layer is formed on the surface of C/C core • Grinding of the sliding surface of disk

  4. Benefits • High and consistent frictional coefficients (even with high thermal stress) • High efficiency on a functional temperature range • Weight advantage over conventional cast iron components (65%) • Reduction of unsprung mass (5 Kg/wheel) exceptional driving behavior • Not affected by corrosion • Superior response in all driving conditions • Long life span ( in excess of 300,000 Km) • No disk distortion or judder • Early and consistent brake response • Reduction of the stopping distance

  5. Applications • Super-sport vehicles • Luxury SUVs • Aircraft • Elevators • Trains Image credit: R. L. Hecht, Materials Science Department, Ford Research Laboratory Image credit: Continental Teves®

  6. References • Choi, Ji-Hoon, Jae-Hung Han, and In Lee. “Transient Analysis of Thermoelastic Contact Behaviors in Composite Multidisk Brakes.” Journal of Thermal Stresses, 27: 1149-1167,2004. • High Performance Automotive Brakes. 28 Sep. 2006. SGL Technologies Website. 2005 http://www.sglcarbon.com/sgl_t/brakedisc/index.html • Stadler, Zmago, Kristoffer Krnel, and Tomaz Kosmac. “Friction behavior of sintered metallic brake pads on a C/C-SiC composite brake disk.” Journal of European Ceramic Society (2006): doi:10.1016/j.jeurceramsoc.2006.04.032

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