Combining multi-scale surface texturing and DLC coatings for improved tribological performance of 3D printed polymers

Marian, Max; Zambrano, Dario F.; Rothammer, Benedict; Waltenberger, Valentin; Boidi, Guido; Krapf, Anna; Merle, Benoit; Stampfl, Jürgen; Rosenkranz, Andreas; Gachot, Carsten; Grützmacher, Philipp G.

doi:10.1016/j.surfcoat.2023.129682

Cited by 15 publications

(2 citation statements)

References 24 publications

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“…Recent studies have shown that microscopic textures, such as pits, can achieve better hydrodynamic effects. In addition, the rapid development of laser technology [117] and diamond-like carbon (DLC) coating technology [118] provides good technical support in the fabrication of micro-structures. Therefore, based on flexible and accurate micro-manufacturing technology, the friction performance and bearing capacity of a non-smooth bionic texture can be further improved by optimizing the size parameters of the pits.…”

Section: Equivalent Diametermentioning

confidence: 99%

Effect of Material Selection and Surface Texture on Tribological Properties of Key Friction Pairs in Water Hydraulic Axial Piston Pumps: A Review

Liang,

Wang,

Zhang

et al. 2023

Lubricants

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A water hydraulic axial piston pump has become the preferred power component of environmentally friendly water hydraulic transmission systems, due to its advantages of a compact structure, high power density, and so on. The poor friction and wear performance in the water medium, especially under extreme conditions of high speed and high pressure, limit the engineering application of the water hydraulic axial piston pump. In this review, the research progress for key friction pair materials (such as special corrosion-resistant alloys, engineering plastics, and engineering ceramics) for water hydraulic axial piston pumps is, firstly, summarized. Secondly, inspired by nature, the processing methods, lubrication drag-reduction mechanism, and tribological properties of the biomimetic surface textures are discussed. The effects of the surface texture shape, equivalent diameter, depth, and arrangement on the pump’s tribological properties are reviewed in detail. Finally, the application status of, and problems with, surface texture technology in water hydraulic axial piston pumps are summarized. It is suggested that future studies should focus on the multi-field coupling lubrication anti-friction mechanism of the multi-type composite texture under extreme conditions and mixed lubrication; and the anti-wear performance of the texture coupled with a coating modification, to further promote the surface texture in the field of lubrication antifriction engineering applications.

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Section: Equivalent Diametermentioning

confidence: 99%

Effect of Material Selection and Surface Texture on Tribological Properties of Key Friction Pairs in Water Hydraulic Axial Piston Pumps: A Review

Liang,

Wang,

Zhang

et al. 2023

Lubricants

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show abstract

“…Especially in photochemistry applications or additive manufacturing techniques via irradiation curing, there is an opportunity to provide new bio-based materials with only minor adjustments [ 12 ]. Consequently, this combines the benefits of additive manufacturing, such as rapid prototyping, high flexibility and the fabrication of complex geometries by applying innovative biomaterials based on renewable resources, that are omnipresent and available at a low cost [ 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Photocrosslinkable Cellulose Derivatives for the Manufacturing of All-Cellulose-Based Architectures

Rothammer,

Zollfrank

2023

Polymers

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Replacing petroleum-based polymers with biopolymers such as polysaccharides is essential for protecting our environment by saving fossil resources. A research field that can benefit from the application of more sustainable and renewable materials is photochemistry. Therefore, cellulose-based photoresists that could be photocrosslinked via UV irradiation (λ = 254 nm and λ = 365 nm) were developed. These biogenic polymers enable the manufacturing of sustainable coatings, even with imprinted microstructures, and cellulose-based bulk materials. Thus, herein, cellulose was functionalized with organic compounds containing carbon double bonds to introduce photocrosslinkable side groups directly onto the cellulose backbone. Therefore, unsaturated anhydrides such as methacrylic acid anhydride and unsaturated and polyunsaturated carboxylic acids such as linoleic acid were utilized. Additionally, these cellulose derivatives were modified with acetate or tosylate groups to generate cellulose-based polymers, which are soluble in organic solvents, making them suitable for multiple processing methods, such as casting, printing and coating. The photocurable resist was basically composed of the UV-crosslinkable biopolymer, an appropriate solvent and, if necessary, a photoinitiator. Moreover, these bio-based photoresists were UV-crosslinkable in the liquid and solid states after the removal of the solvent. Further, the manufactured cellulose-based architectures, even the bulk structures, could be entirely regenerated into pure cellulose devices via a sodium methoxide treatment.

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Ti₃C₂T_x‐UHMWPE Nanocomposites—Towards an Enhanced Wear‐Resistance of Biomedical Implants

Rothammer,

Feile,

Werner

et al. 2024

J Biomedical Materials Res

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There is an urgent need to enhance the mechanical and biotribological performance of polymeric materials utilized in biomedical devices such as load‐bearing artificial joints, notably ultrahigh molecular weight polyethylene (UHMWPE). While two‐dimensional (2D) materials like graphene, graphene oxide (GO), reduced GO, or hexagonal boron nitride (h‐BN) have shown promise as reinforcement phases in polymer matrix composites (PMCs), the potential of MXenes, known for their chemical inertness, mechanical robustness, and wear‐resistance, remains largely unexplored in biotribology. This study aims to address this gap by fabricating Ti3C2Tx‐UHMWPE nanocomposites using compression molding. Primary objectives include enhancements in mechanical properties, biocompatibility, and biotribological performance, particularly in terms of friction and wear resistance in cobalt chromium alloy pin‐on‐UHMWPE disk experiments lubricated by artificial synovial fluid. Thereby, no substantial changes in the indentation hardness or the elastic modulus are observed, while the analysis of the resulting wettability and surface tension as well as indirect and direct in vitro evaluation do not point towards cytotoxicity. Most importantly, Ti3C2Tx‐reinforced PMCs substantially reduce friction and wear by up to 19% and 44%, respectively, which was attributed to the formation of an easy‐to‐shear transfer film.

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Combining multi-scale surface texturing and DLC coatings for improved tribological performance of 3D printed polymers

Cited by 15 publications

References 24 publications

Effect of Material Selection and Surface Texture on Tribological Properties of Key Friction Pairs in Water Hydraulic Axial Piston Pumps: A Review

Effect of Material Selection and Surface Texture on Tribological Properties of Key Friction Pairs in Water Hydraulic Axial Piston Pumps: A Review

Photocrosslinkable Cellulose Derivatives for the Manufacturing of All-Cellulose-Based Architectures

Ti₃C₂T_x‐UHMWPE Nanocomposites—Towards an Enhanced Wear‐Resistance of Biomedical Implants

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Combining multi-scale surface texturing and DLC coatings for improved tribological performance of 3D printed polymers

Cited by 15 publications

References 24 publications

Effect of Material Selection and Surface Texture on Tribological Properties of Key Friction Pairs in Water Hydraulic Axial Piston Pumps: A Review

Effect of Material Selection and Surface Texture on Tribological Properties of Key Friction Pairs in Water Hydraulic Axial Piston Pumps: A Review

Photocrosslinkable Cellulose Derivatives for the Manufacturing of All-Cellulose-Based Architectures

Ti3C2Tx‐UHMWPE Nanocomposites—Towards an Enhanced Wear‐Resistance of Biomedical Implants

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Product

Resources

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Ti₃C₂T_x‐UHMWPE Nanocomposites—Towards an Enhanced Wear‐Resistance of Biomedical Implants