Journal ArticleDOI
C/C-SiC Composites for Advanced Friction Systems
TLDR
Ceramic Matrix Composites (CMC) as discussed by the authors is a type of composite material based on carbon fibres and silicon carbide matrices, which have superior tribological properties in comparison to grey cast iron or carbon/carbon.Abstract:
Ceramic Matrix Composites (CMC), based on reinforcements of carbon fibres and matrices of silicon carbide, show superior tribological properties in comparison to grey cast iron or carbon/carbon. In combination with their low density, high thermal shock resistance and good abrasive resistance, these Si-infiltrated carbon/carbon materials, called C/SiC or C/C-SiC composites, are promising candidates for advanced friction systems. Generally, the carbon fibres lead to an improved damage tolerance in comparison to monolithic SiC, whereas the silicon carbide matrix improves the wear resistance compared to carbon/carbon. In combination with new design approaches cost-efficient manufacturing processes have been developed and have lead to successfully tested prototypes of brake pads and disks, especially for passenger cars and emergency brake systems.read more
Citations
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Mechanical and tribological properties of C/C – SiC ceramic composites with di ff erent preforms
TL;DR: In this article , the C/C-SiC composites were evaluated and compared based on di ff erent c/C densities and the carbon fiber textile architecture.
Journal ArticleDOI
Thermodynamics equilibrium analysis on the chemical vapor deposition of HfC as coatings for ceramic matrix composites with HfClx(x = 2–4)-CyHz(CH4, C2H4 and C3H6)-H2-Ar system
Juanli Deng,Juanli Deng,Baofu Lu,Kaiyue Hu,Bohan Zheng,Shangwu Fan,Laifei Cheng,Litong Zhang +7 more
TL;DR: In this article, a detailed thermodynamic equilibrium analysis in the chemical vapor deposition of HfC as coatings for ceramic matrix composites with HfClx(x = 2-4)-CyHz(CH4, C2H4 and C3H6)-H2-Ar system has been investigated using the FactSage code.
Proceedings ArticleDOI
Application of Micro-CT and SEM Technology In-situ Observation of Damage Evolution of C/SiC Composites
TL;DR: In this article, the microscopic processes of crack initiation, propagation and failure of C/SiC composites with circular hole were directly observed under tensile load, and the results show that the method proposed in this paper can be used to analyze and visualize crack initiation and propagation.
Journal ArticleDOI
Preparation and Properties of C/SiC Composites via Liquid Silicon Infiltration Process
TL;DR: In this paper, a three-dimensional short carbon fiber felt reinforced C/SiC composites were prepared by the liquid silicon infiltration (LSI) process and the porosity ratio was calculated as 40.1% when the volume percent of carbon fiber (including carbon coating) is 23%, and after screening porosity ratios from ~55% to ~20%, the optimized experimental result (39.5%) is highly in accordance with the design value.
Journal ArticleDOI
High-Pressure Cold Spray Coatings for Aircraft Brakes Application
TL;DR: In this paper , the potential use of high pressure cold spray (HP-CS) technology to produce a film of friction material onto a low-carbon steel substrate to allow its use as potential composite material for the stators and rotors of aircraft brake units was addressed.
References
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Book ChapterDOI
Cost Effective Processing of CMC Composites by Melt Infiltration (LSI-Process)
TL;DR: In this article, a cost efficient manufacturing route has been developed by DLR based on the infiltration of a reactive fluid phase into porous carbon fiber preforms, where Molten silicon is used as the reactive fluid which replaces the initial pore volume of the preform and reacts subsequently with the carbon matrix to form silicon carbide.
Patent
Method of manufacturing a friction element
TL;DR: In this article, a method of manufacturing a friction element designed for frictional contact with a body and for use, in particular, in brakes or clutches was proposed. But the method called for a porous carbon block to be produced which approximately matched the shape of the end of the abrasion unit, liquid silicon was infiltrated into the pores of the carbon block and the block was ceramized by initiating a chemical reaction to form silicon carbide.
Proceedings ArticleDOI
Carbon/Carbon Friction Materials for Dry and Wet Brake and Clutch Applications
D. W. Gibson,C. J. Taccini +1 more
Liquid Infiltrated C/SiC : An Alternative Material for Hot Space Structures
Hermann Hald,Walter Krenkel +1 more
C/C-SiC Composites For High Performance Emergency Brake Systems
Ralph Renz,Walter Krenkel +1 more
TL;DR: In this article, the authors presented the successful development of new C/C-SiC composite materials for a commercial application by substituting conventional materials and the adaption of the brake system to the new requirements.
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C/C–SiC composites for space applications and advanced friction systems
Walter Krenkel,F. Berndt +1 more