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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

Carbon-Ceramic Brakes

Josué De Lara Bashulto

MEEN 3344

Photo Credit: http://news.caradisiac.com

carbon fiber reinforced silicon carbide c sic
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)

manufacture
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
benefits
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
applications
Applications
  • Super-sport vehicles
  • Luxury SUVs
  • Aircraft
  • Elevators
  • Trains

Image credit: R. L. Hecht, Materials Science Department, Ford Research Laboratory

Image credit: Continental Teves®

references
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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