Surface structuring of case hardened chain pins by cold-sprayed microparticles to modify friction and wear properties

Buhl, Sebastian; Schmidt, K.; Sappok, D.; Merz, Rolf; Godard, Claudia; Kerscher, Eberhard; Kopnarski, Michael; Sauer, Bernd; Antonyuk, Sergiy; Ripperger, Siegfried

doi:10.1016/j.partic.2014.10.001

Cited by 16 publications

(6 citation statements)

References 11 publications

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“…A) was done with a cold spray‐technique developed at the Chair of Particle Process Engineering at the University of Kaiserslautern (previously described by Buhl et al. and Schmidt et al. ).…”

Section: Methodsmentioning

confidence: 95%

“…Additionally, modification of stainless steel surfaces with TiO 2 -microparticles with an average diameter d median = 1.5 μm (d = 0.2-5 μm, see Fig. 2A) was done with a cold spraytechnique developed at the Chair of Particle Process Engineering at the University of Kaiserslautern (previously described by Buhl et al [17] and Schmidt et al [18]).…”

Section: Micro Structuring Of Surfacesmentioning

confidence: 99%

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Analyzing the influence of microstructured surfaces on the lactic acid production of Lactobacillus delbrueckii lactis in a flow‐through cell system

Schlegel

Chodorski

Huster

et al. 2017

Engineering in Life Sciences

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Microorganisms growing in biofilms might be possible biocatalysts for future biotechnological production processes. Attached to a surface and embedded in an extracellular polymeric matrix, they create their preferred environment and form robust cultures for continuous systems. With the objective of implementing highly efficient processes, productive biofilms need to be understood comprehensively. In this study, the influence of microstructured metallic surfaces on biofilm productivity was researched. To conduct this study, titanium and stainless steel sheets were polished, micromilled, as well as coated with particles. Subsequently, the metal sheets were exposed to the lactic acid producing Lactobacillus delbrueckii subsp. lactis under laminar and homogeneous flow conditions in a custom-built flow cell. A proof-ofconcept showed that biofilm formation in the system only occurred on the designated substratum. Following a 24-h batch cultivation for primary biofilm development, the culture was continuously provided with glucose containing medium. As different experimental series have indicated, the process resulted to be stable for up to eleven days. Primary metabolite productivity averaged around 6-7 g/(L h). Interestingly, the productivity was shown to be affected neither by the type of metal, nor by the applied microstructures. Nevertheless, a higher dry biomass weight determined on micro-milled substratum indicates a complementary differentiation of biofilm components in future experiments.

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Section: Methodsmentioning

confidence: 95%

Section: Micro Structuring Of Surfacesmentioning

confidence: 99%

Analyzing the influence of microstructured surfaces on the lactic acid production of Lactobacillus delbrueckii lactis in a flow‐through cell system

Schlegel

Chodorski

Huster

et al. 2017

Engineering in Life Sciences

View full text Add to dashboard Cite

show abstract

“…In our previous work [21], a numerical model of the motion of especially fine solid particles (size below 10 µm) in the gas was developed and applied to optimize the nozzle design. In another work [22], we studied the effect of the coatings with fine TiO 2 particles on the tribological behavior of 16MnCr5 steel chain pins created by the established cold spraying method for fine particles. Additionally, the surface modification by cold sprayed steel particles on steel substrates is described in the previous work [23].…”

Section: Introductionmentioning

confidence: 99%

Simulation of Particle Interaction with Surface Microdefects during Cold Gas-Dynamic Spraying

et al. 2022

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The cold gas-dynamic spray (CGDS) technique is utilized for repairing processes of a large number of metallic components in mechanical and process engineering, such as bridges or vehicles. Fine particles impacting on the component surface can be severely deformed and penetrate into the defects, filling and coating them, resulting in possible protection against corrosion or crack propagation. This work focuses on the investigation of the impact behavior of cold sprayed particles with the wall surface having microdefects in the form of cavities. The collision of fine single particles with the substrate, both made from AISI 1045 steel, was simulated with the finite element method (FEM) using the Johnson–Cook failure model. The impact phenomena of particles on different microdefect geometries were obtained and compared with the collision on a smooth surface. The particle diameter and defect were varied to investigate the influence of the size on the deformation behaviour. The different impact scenarios result in different temperature and stress distributions in the contact zone, penetration and deformation behavior during the collision.

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“…The interaction between the component surface and the wetting lubricant is of great importance for operation. In addition to wear investigations, research is also focusing on the optimization of frictional properties by micro structuring the component surfaces [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Precise Friction Measurement in Drive Chains Using a Chain Joint Tribometer

2021

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For high performance racing applications as well as to achieve global emission goals, the efficiency of chain drives in vehicles is of great importance. In previous studies research on drive chains for motorcycle transmissions and timing drives of combustion engines is done with regard to efficiency and wear of the entire drive trains. Hence a test rig, the chain joint tribometer, was built. That enables to do wear and friction research on all parts inside of a chain joint like pin and bush. In conventional test rigs for efficiency investigation in circulation mode, the effects of different friction contact points overlap. So, research on the tribological system "chain joint contact" is in the focus. This rig can represent arbitrary load curves, in particular the contact force and the relative motion of a real chain drive. The chain joint tribometer closes the gap between investigations on whole chain drives standard tribometer tests. In this paper, results of friction analysis using drive chain segments in the arrangement of serial production are presented. Differences are distinguished between different chains having deviating surface roughnesses, which proves that the used tribometer is an adequate setup to analyze drive chains with regard to friction.

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Surface structuring of case hardened chain pins by cold-sprayed microparticles to modify friction and wear properties

Cited by 16 publications

References 11 publications

Analyzing the influence of microstructured surfaces on the lactic acid production of Lactobacillus delbrueckii lactis in a flow‐through cell system

Analyzing the influence of microstructured surfaces on the lactic acid production of Lactobacillus delbrueckii lactis in a flow‐through cell system

Simulation of Particle Interaction with Surface Microdefects during Cold Gas-Dynamic Spraying

Precise Friction Measurement in Drive Chains Using a Chain Joint Tribometer

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