High-Temperature Materials for Racing Car Pressure Brake Discs
Abstract
This article presents a structural-comparative analysis of the applicability of various materials for pressure brake discs in racing cars under extreme thermal and mechanical loads. The study is conducted within an interdisciplinary framework combining materials science, thermal modeling, and engineering mechanics. Special attention is given to microstructural and fractographic analysis of steels (AISI 1020, AISI 4140, SS420), carbon-ceramic composites (C/C, SiC), and their combinations in hybrid layered configurations. Differences in material behavior are identified based on key criteria such as thermal expansion, oxidation resistance, microcrack formation, and residual deformation. Based on numerical modeling in ANSYS and analysis of a real track profile (“Michigan 2019” circuit), a correlation between thermocyclic degradation and track configuration, rotor geometry, and ventilation features is established. Comparative analysis shows that C/C and SiC discs provide more uniform wear and stable friction coefficients at temperatures above 1000 °C, while steels exhibit limited suitability under intensive braking conditions. The potential of biomimetic textures and fluoropolymer (PTFE) coatings to enhance heat dissipation efficiency is substantiated. The article will be of interest to specialists in motorsport engineering, materials science, thermomechanics, and brake system design, as well as developers of composite structures operating under high thermal loads.
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References
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