Abrasion Mechanism of Stainless Steel/Carbon Fiber-Reinforced Polyether-Ether-Ketone (PEEK) Composites

Abstract

A new type of composite material, stainless steel fiber and carbon fiber-reinforced polyether-ether-ketone (PEEK), was investigated to study its friction and wear properties and mechanisms. The friction materials containing 11 ingredients were hot-pressed and tested using a pad-on-disc type wear tester under unlubricated sliding friction and wear conditions at a constant sliding speed. The worn surface morphology was observed by Field-emission Scanning Electron Microscope (FE-SEM) and Atomic Force Microscope (AFM). The role of transfer film was studied using X-ray photoelectron spectroscopy (XPS) to investigate the thermal decomposition of the friction material. The fade ratio of the composites was only 4.8%, the recovery ratio 107%, and the total wear ratio was as low as 0.99 3 10 27 cm 3 (N m) 21 , showing the perfect properties of heat stability and recovery, as well as high antiwear ability of the composites. Adherence abrasion and particle abrasion take place at higher temperature. A transfer film is formed, which may improve abrasive resistant performance to get stable friction coefficient and low abrasion value for composite friction materials.

The Evaluation of Physio-Mechanical and Tribological Characterization of Friction Composites Reinforced by Waste Corn Stalk

“…The fade resistance and recovery behaviors are of critical importance in the performance assessment of friction composites, and they can influence braking reliability and effectiveness during the braking process [ 33 ]. The friction coefficients decreased gradually with a temperature rise and recovered after a temperature reduction, which were referred to as fade and recovery phenomena, respectively [ 34 ]. Fade ratios and recovery ratios were the main parameters for evaluating the friction stability of friction composites and quantitatively characterizing the fluctuations of the friction coefficients.…”

“…The fade ratio F and recovery ratio R were defined by the following equations [ 33 , 34 ]: where μ F100°C and μ F350°C are the friction coefficients with the temperature rise to 100 °C and 350 °C during fade tests, respectively; μ R100°C is the friction coefficient with the temperature declined to 100 °C during recovery tests.…”

Modeling and optimization in tribological parameters of polyether ether ketone matrix composites using D-optimal design

“…AFM analysis is ideal for quantitatively measuring the nanometric dimensional surface roughness and for visualizing the surface nano texture of the nanocomposites. 22 Two-dimensional (2D) and 3D AFM images of 30 % GF-reinforced PEEK and unreinforced PEEK are shown in Figures 24 and 25, respectively. The surface roughness of composites decreased from 197 to 54 nm as the weight percentage of GF content is increased from 0 to 30%.…”

“…This technique has been used to study the surface roughness, adhesion, friction, scratching/wear, indentation, material transfer, and boundary lubrication for nanoscale surfaces. 21 Hua Fu et al 22 have used AFM to study the tribological behaviors of stainless steel fiber-and CF-reinforced PEEK composite materials. Response surface methodology (RSM) design is a helpful tool for the quantification of the relationship between one or more measured responses and the vital input factors.…”

Fabrication and mechanical properties of hydroxyapatite filled polyetheretherketone functional gradient biomaterials

“…Polyetheretherketone (PEEK) is a kind of thermoplastic engineering plastics with high melting temperature, high modulus, high strength, and excellent processing performance [8]. PEEK-based composites exhibit the excellent friction and wear properties [9][10][11]. Owing to these advantages, PEEK-based biocomposites have been widely used in biomedical field [12,13].…”