Article
Engineering, Multidisciplinary
Fei Hu, Changxiong Ning, Wu Ouyang
Summary: Water-lubricated polymer bearing is crucial for the operation of various equipment. This paper proposes an in-situ measurement method for bearing wear using ultrasound and parameter inversion. The experiment proves the high accuracy of parameter inversion for thickness, density, and attenuation factor, with errors within acceptable ranges.
Article
Engineering, Biomedical
Alican Tuncay Alpkaya, Senay Mihcin
Summary: Understanding wear mechanisms is crucial for preventing primary failures and revision surgery in total hip replacement (THR). This study presents a wear prediction model for PEEK-on-XLPE bearing couple, simulating a 3D-gait cycle loading over 5 million cycles. The predicted volumetric and linear wear rates of XLPE liner per million cycles were 1.965 mm3/Mc and 0.0032 mm/Mc respectively. These results are consistent with existing literature. PEEK-on-XLPE shows promising wear performance in THR application and could be considered as an alternative material to CoCr head in XLPE-bearing couples. The wear prediction model can be utilized to optimize design parameters and extend the lifespan of hip implants.
MEDICAL ENGINEERING & PHYSICS
(2023)
Article
Engineering, Mechanical
Alexandre R. C. Nascimento, Richard R. Chromik, Robert Schulz
Summary: This study investigated the friction and wear behavior of three materials commonly used in industrial bearing applications: a Sn-based Babbitt, polytetrafluoroethylene (PTFE), and a polyether ether ketone (PEEK) composite. The effects of load and sliding velocities on wear rates were evaluated by regression analysis, with a focus on the relationship between wear and materials mechanical properties. The ranking of wear performance correlated most strongly with the ratio of hardness to reduced modulus, with implications for estimating oil film thickness in lubrication regimes.
Article
Engineering, Mechanical
Kian Bashandeh, Pixiang Lan, Andreas A. Polycarpou
Summary: This study examined the abrasive wear of polymer composite coatings based on polyether ether ketone (PEEK) and aromatic thermosetting co-polyester (ATSP) in a lunar regolith simulant environment. The results showed that the polymer-on-polymer system had a significant reduction in friction and effectively mitigated the accumulation of sand and dust at the interface.
Article
Materials Science, Multidisciplinary
Yun Shi, Ting Deng, Yu Peng, Zugan Qin, Murugan Ramalingam, Yang Pan, Cheng Chen, Feng Zhao, Lijia Cheng, Juan Liu
Summary: The objective of this study was to enhance the biological activity of PEEK implants through sulfonation treatment. The results showed that SPEEK2 exhibited superior biocompatibility and osteogenic activity compared to other groups.
Article
Engineering, Mechanical
Shihua Yuan, Chenhui Zhang
Summary: Polyether ether ketone (PEEK) is a versatile material for friction pairs, and it can be modified through sulfonation to achieve ultralow friction, good wear resistance, and high loading capacity when used as a water-lubricated friction pair.
Article
Materials Science, Characterization & Testing
Fei Shen, Liao-Liang Ke
Summary: This study experimentally evaluates the fretting wear and frictional heating behavior of PEEK and three types of PEEK-based composites under dry sliding and water lubricated conditions. It is found that the carbon fiber-filled composite exhibits excellent fretting wear resistance, while the composite filled with PTFE, carbon fibers, and graphite shows different wear mechanisms. Frictional heating does not significantly increase the temperature for these materials under fretting wear loading conditions. Water lubrication reduces the coefficients of friction for all four materials.
Article
Physics, Multidisciplinary
Yu Xi Zhang, Xue Hui Chen, Jian Li, Cong Min Li, Xiang Li, Ting Gao, Hao Li, Tian Tian Jing, Wei Liu
Summary: In order to improve the friction wear performance of the aluminum alloy scroll disc of the scroll compressor under dry friction conditions, a C-MoS2-PTFE-PEEK coating was prepared on the surface of the aluminum alloy substrate. The coating exhibited good lubrication properties due to the synergistic effect of MoS2 and PTFE, resulting in reduced deformation and friction coefficient. The wear rate and friction coefficient of the C-MoS2-PTFE-PEEK coating were lower than that of the anodic oxide film and Ni-plated coating of the aluminum alloy, showing excellent anti-friction and wear resistance. The wear mechanism of the coating mainly included fatigue wear, adhesive wear, and abrasive wear under different loads.
Article
Materials Science, Multidisciplinary
Yan Cui, Chong Li, Zenglou Li, Xiaojie Yao, Wenbo Hao, Songling Xing, Yuming Xie, Xiangchen Meng, Long Wan, Yongxian Huang
Summary: Deformation-driven processing was utilized to prepare wear-resistant carbon nanotube reinforced poly-ether-ether-ketone (PEEK) composites. Severe plastic deformation contributed to the homogeneous dispersion of reinforcements, and low frictional heat input ensured the structural integrity of carbon nanotubes.
Article
Chemistry, Physical
Sagar M. Baligidad, T. Arunkumar, Gavaskar Thodda, K. Elangovan
Summary: In this study, wear resistant coatings, including hydroxyapatite (HAp) and reduced graphene oxide (rGO), were applied to polyetheretherketone (PEEK) sample through dip coating method. It was found that adding rGO enhanced the friction and wear resistance of the coating, with HAp+rGO composite achieving the best wear resistance. Furthermore, rGO acted as an interstitial bonding agent between PEEK and HAp, increasing bond strength.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Biomedical
Albina R. Franco, Rogerio Pirraco, Emanuel M. Fernandes, Fernando Rodrigues, Isabel B. Leonor, David L. Kaplan, Rui L. Reis
Summary: This study demonstrates that recombinant spider silk materials with antimicrobial peptides can effectively prevent surgical site infections and exhibit an active response to bacterial infection, making them a potential approach for developing drug-free antimicrobial sutures.
Article
Engineering, Mechanical
Zhibin Lin, Ke Zhang, Peng Tao, Bingzhao Gao, Xiaogang Zhao, Xuemei Zong, Zhikai Chen, Zhihui Zhang
Summary: The hybrid wear system consisting of independent PEEK and PTFE components sliding against steel can improve the tribological performance of PEEK without compromising its mechanical properties. The roughness of the countersurface has a significant impact on the formation of tribofilms and the overall tribological performance of the hybrid wear system.
Article
Polymer Science
Bayan Kurbanova, Kazybek Aimaganbetov, Kanat Ospanov, Kairat Abdrakhmanov, Nurkhat Zhakiyev, Bauyrzhan Rakhadilov, Zhuldyz Sagdoldina, Nurlan Almas
Summary: The mechanical and tribological characteristics of PEEK sheets were improved by electron beam irradiation. The lowest specific wear rate was achieved by PEEK sheets irradiated at a speed of 0.8 m/min with a total dose of 200 kGy. The improvement in microhardness was observed in samples exposed to an electron beam at a speed of 9 m/min for 30 runs with a total dose of 300 kGy.
Article
Engineering, Mechanical
Zhiyi Jin, Zhenqiang Yao, Yaofei Sun, Hong Shen
Summary: The tribological performance of polyetheretherketone (PEEK) as sliding bearing pads against stainless steel runner under heavy loads suffering temporary lack of lubricants was examined. PEEK reinforced with carbon fiber (CF)/graphite/polytetrafluoroethylene (PTFE) exhibited a lower friction coefficient and temperature compared to the pure matrix.
Article
Materials Science, Multidisciplinary
Cunao Feng, Jiajia Cen, Ting Wu, Tingzhu Hou, Kai Chen, Xiaowei Li, Dekun Zhang
Summary: This study aimed to improve the wear resistance and antibacterial properties of Poly(ether ether ketone) (PEEK) by synthesizing zinc oxide (ZnO) on the surface of acidified short carbon fibers (SCF) and using them as reinforcement fillers in a PEEK composite. The results showed that the addition of ZnO-modified SCF improved the mechanical properties of PEEK and exhibited good antibacterial activity against Escherichia coli and Staphylococcus aureus. The PEEK/ZnO-SCF composites have promising applications in the field of artificial joints.
ACS APPLIED POLYMER MATERIALS
(2022)
