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Ahmad K, Batool SA, Farooq MT, Minhas B, Manzur J, Yasir M, Wadood A, Avcu E, Ur Rehman MA. Corrosion, surface, and tribological behavior of electrophoretically deposited polyether ether ketone coatings on 316L stainless steel for orthopedic applications. J Mech Behav Biomed Mater 2023; 148:106188. [PMID: 37856992 DOI: 10.1016/j.jmbbm.2023.106188] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/11/2023] [Accepted: 10/12/2023] [Indexed: 10/21/2023]
Abstract
Electrophoretic deposition (EPD) of polyether ether ketone (PEEK) coatings on metallic implants has recently attracted a great deal of interest; however, further investigation into their corrosion, surface, and tribological properties is required for their clinical application. Using Potentiodynamic polarization and Mott-Schottky analysis of PEEK coatings, we analyzed the electrochemical corrosion behavior of electrophoretically deposited PEEK coatings on 316L stainless steel (SS) substrates. In addition, the tribological behavior of the coatings was determined through pin-on-disc and scratch testing. Initially, the EPD parameters were optimized using a Taguchi Design of Experiment (DoE) approach. The coatings exhibited irregular shaped grains along with ∼66 μm of thickness. Fourier transform infrared spectroscopy confirmed the presence of functional groups ascribed with PEEK. The coatings were moderately hydrophobic and had an average roughness of ∼2 μm. The corrosion studies demonstrated promising features of current density and corrosion potential, indicating that corrosion resistance significantly improves with PEEK coating. Electrochemical impedance spectroscopy also confirmed the corrosion resistance of PEEK coating. The coatings exhibited a slightly lower wear resistance than SS samples, but still possessed adequate wear and scratch resistance for biomedical applications. The current study confirmed that the PEEK coatings on metallic implants is effective for orthopedic applications where corrosion and tribology are major concerns.
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Affiliation(s)
- Khalil Ahmad
- Department of Materials Science & Engineering, Institute of Space Technology Islamabad, Islamabad Highway, Islamabad, 44000, Pakistan
| | - Syeda Ammara Batool
- Department of Materials Science & Engineering, Institute of Space Technology Islamabad, Islamabad Highway, Islamabad, 44000, Pakistan
| | - Muhammad Tahir Farooq
- Department of Materials Science & Engineering, Institute of Space Technology Islamabad, Islamabad Highway, Islamabad, 44000, Pakistan
| | - Badar Minhas
- Department of Materials Science & Engineering, Institute of Space Technology Islamabad, Islamabad Highway, Islamabad, 44000, Pakistan
| | - Jawad Manzur
- Department of Materials Science & Engineering, Institute of Space Technology Islamabad, Islamabad Highway, Islamabad, 44000, Pakistan
| | - Muhammad Yasir
- Department of Materials Science & Engineering, Institute of Space Technology Islamabad, Islamabad Highway, Islamabad, 44000, Pakistan.
| | - Abdul Wadood
- Department of Materials Science & Engineering, Institute of Space Technology Islamabad, Islamabad Highway, Islamabad, 44000, Pakistan
| | - Egemen Avcu
- Department of Mechanical Engineering, Kocaeli University, Kocaeli, 41001, Turkey; Ford Otosan Ihsaniye Automotive Vocational School, Kocaeli University, Kocaeli, 41650, Turkey
| | - Muhammad Atiq Ur Rehman
- Department of Materials Science & Engineering, Institute of Space Technology Islamabad, Islamabad Highway, Islamabad, 44000, Pakistan.
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Abstract
Compromise of the spinal canal and its neural elements is a well-recognized pathological entity affecting the lumbar or cervical spine. Thoracic stenosis in the absence of a generalized rheumatological, orthopedic, or metabolic disorder is rare. The authors report a case of progressive thoracic myelopathy leading to paraplegia following severe thoracic spinal stenosis secondary to post-traumatic hypertrophy of thoracic laminae and ossification of the ligamentum flavum and posterior longitudinal ligament.
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Affiliation(s)
- M T Farooq
- Department of Physical Medicine and Rehabilitation, State University of New York Health Science Center at Brooklyn, New York 11203, USA
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