Friction surface structure of a Cf/C–SiC composite brake disc after bedding testing on a full-scale dynamometer

Abstract

Citation: BIAN, G. and WU, H., 2016. Friction surface structure of a Cf/CSiC composite brake disc after bedding testing on a full-scale dynamometer. AbstractWe have examined friction surface structure of a carbon ceramic brake disc tested on a full-scale dynamometer with microscopy techniques. The bedded friction surface is composed of two types of regions: transferred materials (TM) and SiC. The TM regions were formed through the deposition of wear debris into surface voids, followed by compaction and crystallite refinement during braking. A thin friction layer (FL) was developed on top of TM and SiC regions with nano-sized copper/iron oxide crystallites as the primary constituent.Analysis shows that debris generated from pad is the main source of TM and FL. No evidence shows chemical diffusion bonding between TM and composite constituent. On silicon carbide surface, dislocations were activated as the sources of surface fracture.

Modeling, testing and validation of the vibrational behavior of a dynamometric test rig for railway braking systems

“…New braking materials (Bian and Wu, 2016); Brake related, particle pollution (Alemani et al, 2018); Identification friction (Ehret, 2021;Sawczuk et al, 2021), wear (Yanar et al, 2022;Kim et al, 2021) and squealing models (Bracciali and Megna, 2018); and Optimized thermo-structural and fluid dynamics behavior (Sawczuk and Jüngst,2019;Yevtushenko et al, 2019).…”

“…Safety and productivity of these machines are important for both railway and automotive industries because these test rigs are indispensable for different research topics and industrial applications: New braking materials (Bian and Wu, 2016); Brake related, particle pollution (Alemani et al , 2018); Identification friction (Ehret, 2021; Sawczuk et al , 2021), wear (Yanar et al , 2022; Kim et al , 2021) and squealing models (Bracciali and Megna, 2018); and Optimized thermo-structural and fluid dynamics behavior (Sawczuk and Jüngst,2019; Yevtushenko et al , 2019). …”

Microstructures and tribological behaviors of Cf/C‐SiC composites tailored by Cu and Fe‐Si matrices

“…Carbon fiber/carbon-silicon carbide (C f /C-SiC) composites composed of carbon fibers, carbon matrix and silicon carbide matrix is now being widely applied in high-performance brake system for supercars, racing cars, crane, elevators, and aircraft, etc., due to their advantages like light weight, high specific strength/specific mode, high temperature resistance, high fatigue resistance, excellent friction and wear performance. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] Due to the high manufacture cost of C f /C-SiC composites, the application of full ceramic braking system in the field of heavy-duty is limited. Currently, C f /C-SiC composites coupled with metal counterpart seems to be a favorable solution to give full play to the advantages of the heat resistance and wear resistance of C f /C-SiC composites.…”