A novel assembly of MoS2-PTFE solid lubricants into wear-resistant micro-hole array template and corresponding tribological performance

Wang, A.H.; Xia, J.; Yang, Zhenyu; Xiong, Dangsheng

doi:10.1016/j.optlastec.2019.03.033

Cited by 14 publications

(9 citation statements)

References 10 publications

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“…The effects of area density and depth on wear were also reported in a recent study of Ding et al [182]. They observed that shallow dimples with low area densities demonstrated enhanced film formation ability, thus compensating for negative edge effects that increase abrasion (Figure 11 In an innovative study, Wang et al recently electro-deposited MoS2/PTFE mixtures (PTFE content between 0 and 20 wt.-%) in textures fabricated on a laser-cladded, wear-resistant Fealloy [190]. The best frictional performance was found for a powder mixture containing 10 wt.% of PTFE with a texture density of 20%.…”

Section: Ptfe and Surface Texturesmentioning

confidence: 55%

“…Regarding the geometry of the textures, research effort has focused on dimples [179, 181-183, 185, 186, 188, 189], unidirectional grooves [180], grid-like textures, and circumferentially or radially aligned grooves [184]. Moreover, individual studies can be found in which textured wear-resistant hard coatings [190] or laminated ceramics [188,189] were filled with PTFE solid lubricant via electrophoretic deposition [190] or spray coating [188,189].…”

Section: Ptfe and Surface Texturesmentioning

confidence: 99%

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Synergetic effects of surface texturing and solid lubricants to tailor friction and wear – A review

Rosenkranz

Costa

Baykara

et al. 2021

Tribology International

337

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Surface texturing and solid lubricants have demonstrated the ability to substantially reduce friction and wear under dry conditions. In recent decades, these two technologies have been combined to leverage the advantages of both for superior tribological performance. This review article first summarizes the state-of-the-art regarding surface texturing and solid lubricants, including soft metals, polytetrafluoroethylene, diamond-like carbon and 2D layered materials. Then, the synergy between surface textures and solid lubricants is discussed, with particular emphasis on the underlying mechanisms. Finally, gaps in the existing understanding of these synergies are identified and opportunities for future research are suggested.

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Section: Ptfe and Surface Texturesmentioning

confidence: 55%

Section: Ptfe and Surface Texturesmentioning

confidence: 99%

Synergetic effects of surface texturing and solid lubricants to tailor friction and wear – A review

Rosenkranz

Costa

Baykara

et al. 2021

Tribology International

337

View full text Add to dashboard Cite

show abstract

“…However, using solid lubricant enhances the wear resistance without making the composite very brittle. Molybdenum disulfide is an excellent choice as reinforcement in composites due to its high thermal stability and lubricating property [36][37][38][39][40][41][42]. The presence of molybdenum disulfide resulted in reduction of wear debris and micro-cracks in the worn surface of aluminum 2219-molybdenum disulfide composite [40].…”

Section: Introductionmentioning

confidence: 99%

Characterization of novel molybdenum disulfide and cerium dioxide reinforced hybrid aluminum matrix composites fabricated by friction stir processing

Maji

Ghosh

Nath

et al. 2022

Materialwissenschaft Werkst

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Aluminum matrix composites are widely used for making structural components in the aerospace and automobile industries. In order to sustain the operational demand, excellent anti-wear and corrosion resistance properties are required in the composites. To achieve this, molybdenum disulfide and cerium dioxide reinforced hybrid aluminum-based composites are fabricated by friction stir processing at different rotational speed and number of passes. Due to grain refinement and better particle distribution at high rotational speed and 2 pass, tensile strength and microhardness improves by sacrificing ductility. However, deterioration of mechanical properties than the as-received alloy is evident in all the composites due to dissolvement of strengthening precipitates. With increasing tool rotational speed, severe adhesion type of wear shifts to abrasion wear and the wear resistance also improves. All the composites show similar corrosion behavior as the unprocessed alloy. However, the corrosion parameters such as corrosion potential and corrosion current density were influenced by processing conditions. The composite produced with 1500 min À 1 and 2 pass exhibits highest wear and corrosion resistance.

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“…A few studies also reported the combined effect of laser surface texturing and PTFE coating for improving tribological performance. Wang et al [18] laser-drilled micro-hole array into laser-clad Fe-based alloy coatings on carbon steel and then deposited MoS 2 -PTFE powders by electrophoretic deposition. They showed that the combination of 20% micro hole density with MoS 2 -10 wt% PTFE powders resulted in the lowest COF.…”

Section: Introductionmentioning

confidence: 99%

Tribological behavior of polydopamine/polytetrafluoroethylene coating on laser textured stainless steel with Hilbert curves

2022

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Shallow Hilbert curve patterns with easily programmable texture density were selected for laser texturing of stainless steel substrates. Two different texture path segment lengths (12 and 24 µm) and four different laser power percentages (5%, 10%, 15%, and 20%) were investigated. The textured and smooth substrates were coated with thin polydopamine/polytetrafluoroethylene (PDA/PTFE) coatings for tribological property assessment. The effects of texture density (texture area coverage) and laser power on the durability and friction of the coated surfaces were studied. Laser texturing the substrates improved the coating durability up to 25 times, reduced the friction coefficient, and prevented coating global delamination. The textures fabricated with a laser power of 15% and a texture path segment length of 12 µm yielded the best coating durability. The textures provided the interlocking for the PTFE coating and thus prevented its global delamination. Furthermore, the PTFE inside the texture grooves replenished the solid lubricant worn away in the wear track and prolonged the coating wear life.

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A novel assembly of MoS2-PTFE solid lubricants into wear-resistant micro-hole array template and corresponding tribological performance

Cited by 14 publications

References 10 publications

Synergetic effects of surface texturing and solid lubricants to tailor friction and wear – A review

Synergetic effects of surface texturing and solid lubricants to tailor friction and wear – A review

Characterization of novel molybdenum disulfide and cerium dioxide reinforced hybrid aluminum matrix composites fabricated by friction stir processing

Tribological behavior of polydopamine/polytetrafluoroethylene coating on laser textured stainless steel with Hilbert curves

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