Sustainable tribology: Processing and characterization of multiscale thermoplastic composites within hydropower applications

Saravanan, Prabakaran; Emami, Nazanin

doi:10.1016/b978-0-12-819767-7.00013-x

Cited by 4 publications

(3 citation statements)

References 42 publications

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“…Roughness measurements were averaged from five sampling lengths of 2.5 mm with a cut-off wavelength λc of 2.5 mm, modeled after DIN EN ISO 4288. Specific wear rates ki were calculated according to following formula [55,56]:…”

Section: Coating Characterizationmentioning

confidence: 99%

Verschleißfeste reibungsarme Atmosphärendruck-Plasmaspritzbeschichtungen für nachhaltige (biobasierte recycelbare) Materialien

Kaindl,

Kopp,

Parizek

et al. 2024

Berg Huettenmaenn Monatsh

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Coatings from polyetheretherketone (PEEK), polyamide 12 (PA12), molybdenumdisulfide (MoS2), zinc (Zn), and graphite (C) powder mixtures were deposited on PA6, PA12, and PEEK substrates by an atmospheric pressure plasma (APP) spray jet system. Several tenth of µm thick coatings on PA6 and PA12 substrates result in an almost halved surface roughness Ra ~8 µm, Rq ~10 µm and Rz ~60 µm, whereas a significant increase of all surface roughness parameters is observed for PEEK substrates (Ra < 1 µm → 4 µm, Rq < 1 µm → 5 µm, Rz < 5 µm → 20 µm). The surface roughness, powder composition, and selected APP process parameter strongly influence the coefficient of friction (COF) and specific wear rate ki of the APP coatings in rotational ball-on-disc tribological testing. The COF of PA12/MoS2/C coatings on PA6 substrates manufactured by selective laser sintering (SLS) is ~0.2 after 628 m sliding distance, resulting in a very low calculated ki of 6.3 × 10−7 mm3/Nm. A similarly low COF and ki was observed for PEEK coatings deposited at a current of 75 A and 60 mm jet–substrate distance on SLS PA12 substrate. Although the COF of Zn/C/MoS2 coatings on PEEK drops down below 0.1 after 1884 m sliding distance under nitrogen atmosphere the corresponding ki of 5.6 × 10−5 mm3/Nm is higher. Still all calculated specific wear rates are significantly lower than the reported values of polyamide-polytetrafluorethylene (PTFE)-polyethylene composites (1.9–8.0 × 10−2 mm3/Nm) and partly even outperform PEEK-PTFE composites (1.0 × 10−7–2.5 × 10−6), currently applied in demanding wear regimes.

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Section: Coating Characterizationmentioning

confidence: 99%

Verschleißfeste reibungsarme Atmosphärendruck-Plasmaspritzbeschichtungen für nachhaltige (biobasierte recycelbare) Materialien

Kaindl,

Kopp,

Parizek

et al. 2024

Berg Huettenmaenn Monatsh

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“…Manufacturing by compression molding is based on the production of compounds that have thermoplastic characteristics and are of light molecular weight [116]. First, the materials are placed in a previously heated open space (mold).…”

Section: Compression Moldingmentioning

confidence: 99%

Plant Fibers as Composite Reinforcements for Biomedical Applications

et al. 2023

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Plant fibers possess high strength, high fracture toughness and elasticity, and have proven useful because of their diversity, versatility, renewability, and sustainability. For biomedical applications, these natural fibers have been used as reinforcement for biocomposites to infer these hybrid biomaterials mechanical characteristics, such as stiffness, strength, and durability. The reinforced hybrid composites have been tested in structural and semi-structural biodevices for potential applications in orthopedics, prosthesis, tissue engineering, and wound dressings. This review introduces plant fibers, their properties and factors impacting them, in addition to their applications. Then, it discusses different methodologies used to prepare hybrid composites based on these widespread, renewable fibers and the unique properties that the obtained biomaterials possess. It also examines several examples of hybrid composites and their biomedical applications. Finally, the findings are summed up and some thoughts for future developments are provided. Overall, the focus of the present review lies in analyzing the design, requirements, and performance, and future developments of hybrid composites based on plant fibers.

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“…Self-lubricating bearings are made of tribomaterials (i.e., that have properties well suited for lubrication and against friction and wearing) such as bronze (metal based) or Teflon (plastic based) (Quaranta and Davies 2022). Composites and self-lubricating polymers could be used for thrust bearings in runners and trunnion bearings in gates (Somberg et al 2021;Saravanan and Emami 2021).…”

Section: Self-lubricating Bearings and Environmentally Acceptable Lub...mentioning

confidence: 99%

Advanced Manufacturing and Materials for Hydropower: Challenges and Opportunities

Musa

Ghobrial

Sasthav

et al. 2023

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Sustainable tribology: Processing and characterization of multiscale thermoplastic composites within hydropower applications

Cited by 4 publications

References 42 publications

Verschleißfeste reibungsarme Atmosphärendruck-Plasmaspritzbeschichtungen für nachhaltige (biobasierte recycelbare) Materialien

Verschleißfeste reibungsarme Atmosphärendruck-Plasmaspritzbeschichtungen für nachhaltige (biobasierte recycelbare) Materialien

Plant Fibers as Composite Reinforcements for Biomedical Applications

Advanced Manufacturing and Materials for Hydropower: Challenges and Opportunities

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