Effect of Gas Environment on Friction Behavior and Tribofilm Formation of PEEK/Carbon Fiber Composite

Oyamada, Tomonaga; Ono, Masahiko; Miura, Haruo; Kuwano, Tetsuya

doi:10.1080/10402004.2012.745104

Cited by 26 publications

(19 citation statements)

References 23 publications

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“…Since the composites containing only 10 vol.% SCFs are electric insulators, they were treated to be immune to the mentioned degradation process (PEEK; B-o-R; counterpart is the X10CrNiMoTi1810 steel; R a = 0.1–0.2 µm; RT; V = 1 m/s; CP = 1.5 MPa.) Oyamada, T., et al reported the effect of gas environments on the tribological properties of ‘PEEK + CF’ composites [ 69 ]. The obtained results showed that CoF values decreased from 0.25 down to 0.17 when the humidity changed from 40% down to 2%.…”

Section: Line Contactsmentioning

confidence: 99%

High Performance Polymer Composites: A Role of Transfer Films in Ensuring Tribological Properties—A Review

2022

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The purpose of this review is to summarize data on the structure, mechanical and tribological properties, and wear patterns of composites based on high-performance polymers (HPPs) intended for use in friction units. The review includes three key sections, divided according to the tribological contact schemes regardless of the polymer matrix. In the second part, the analysis of composites is carried out in point contacts. The third section is devoted to the results of studies of HPP-based composites in linear ones. The fourth section summarizes information on flat contacts. Particular attention is paid to the formation of transfer films (TFs) in the contacts and their influence on the tribological patterns of the studied rubbing materials. As a conclusion, it is noted that the challenge of experimental methods for analyzing TFs, stated by K. Friedrich, is effectively solved in recent studies by the XPS method, which enables us to accurately determine their composition. Although this determination is completed after the tribological tests, it allows not only a more accurate interpretation of their results considering specific conditions and loading schemes, but also the ability to design HPP-based composites that form required TFs performing their preset functions.

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Section: Line Contactsmentioning

confidence: 99%

High Performance Polymer Composites: A Role of Transfer Films in Ensuring Tribological Properties—A Review

2022

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“…Tribological behaviour of PEEK composites is also affected by the operating environment, i.e., gas, temperature, lubricant, load, etc. [18][19][20][21]. Theiler and Gradt evaluated the tribological behaviour of PEEK composites in air, vacuum and hydrogen environments [18] from pin-on-disc (PEEK composite pin against steel disc) contact.…”

Section: Introductionmentioning

confidence: 99%

PEEK Composites as Self-Lubricating Bush Materials for Articulating Revolute Pin Joints

2020

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In this study, bearing bushes made of polyetheretherketone (PEEK), 30 wt % carbon fibre reinforced PEEK, 30 wt % glass fibre reinforced PEEK, each 10 wt % of PTFE, graphite and carbon fibre modified PEEK were investigated on a purpose built pin joint test rig. The unlubricated friction and wear behaviour was assessed in sliding contact with a 300M shaft, subjected to a nominal pressure of 93 MPa, articulating sliding speed of 45 °/s. The worn surface and the subsurface layer were studied using optical profilometry and scanning electron microscopy (SEM). Due to thermal sensitivity of PEEK composites, friction energy and temperature rise were analysed for determining the friction and wear mechanism. The bush made of PTFE, graphite and carbon fibre (each 10 wt %) modified PEEK presented the best performance for friction coefficient, wear loss, friction energy and temperature rise. Current work demonstrated that reinforcement modified PEEK composite possesses desirable properties to perform as a load bearing bush in certain tribological applications.

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“…The milled CFs can improve thermal conductivity of fabric composites and dissipate the friction heat generated during the sliding test, thus minimizing the negative effect of the friction heat on the transfer film . Furthermore, self‐lubricating effect of CF is beneficial for keeping integrated transfer film …”

Section: Resultsmentioning

confidence: 99%

Enhanced tribological performance of hybrid polytetrafluoroethylene/Kevlar fabric composite filled with milled pitch‐based carbon fibers

Sun

Yang

et al. 2018

J of Applied Polymer Sci

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As self‐lubricating bearing liner materials, tribological properties of milled pitch‐based carbon fibers (CFs) modified polytetrafluoroethylene (PTFE)/Kevlar fabric composites were investigated, and the microscopic morphology of worn surface was studied. The results show that the appropriate incorporation of CFs can obviously reduce the wear rate of the fabric composite with almost unchanging friction coefficient. The wear rates of 5 wt % CF‐filled PTFE/Kevlar fabric composites are decreased by 30% and 48% for two kinds of composites made with fibers from different producers compared with unfilled fabric composites. Scanning electron microscopy observations show that the appropriate incorporation of CFs obviously improves the interfacial bonding and reduces pull‐out and fracture of Kevlar fiber. Meanwhile, the introduction of CFs at proper fraction is helpful to form smooth and continuous transfer film on the surface of metal counterpart. The improving mechanism of the CF is attributed to increasing mechanical strength, thermal conductivity and self‐lubricating effects. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46269.

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Effect of Gas Environment on Friction Behavior and Tribofilm Formation of PEEK/Carbon Fiber Composite

Cited by 26 publications

References 23 publications

High Performance Polymer Composites: A Role of Transfer Films in Ensuring Tribological Properties—A Review

High Performance Polymer Composites: A Role of Transfer Films in Ensuring Tribological Properties—A Review

PEEK Composites as Self-Lubricating Bush Materials for Articulating Revolute Pin Joints

Enhanced tribological performance of hybrid polytetrafluoroethylene/Kevlar fabric composite filled with milled pitch‐based carbon fibers

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