Tribological performance of PTFE- and PEEK-based coatings under oil-less compressor conditions

Yeo, Seung Min; Polycarpou, Andreas A.

doi:10.1016/j.wear.2012.07.024

Cited by 35 publications

(19 citation statements)

References 25 publications

(36 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…PEEK is blended with carbon fibers (as carbon fibers decrease the thermal expansion of PEEK), to improve its dimensional stability (conservation of volume with changes in temperature and pressure). PTFE is blended with ATSP to improve the friction behavior of ATSP during sliding [3,14]. Unlike bare metals, blended polymers proved to be promising for unlubricated sliding conditions in automotive air-conditioning compressors, including when they were applied in the form of coatings onto conventional substrates [14][15][16][17][18][19][20].…”

Section: Samplesmentioning

confidence: 99%

The effect of surface roughness on the transfer of polymer films under unlubricated testing conditions

Nunez

Polycarpou

2015

Wear

Self Cite

View full text Add to dashboard Cite

Section: Samplesmentioning

confidence: 99%

The effect of surface roughness on the transfer of polymer films under unlubricated testing conditions

Nunez

Polycarpou

2015

Wear

Self Cite

View full text Add to dashboard Cite

“…Therefore, the actual compositions of the coatings were somewhat unknown as they are propriety. However, some information regarding these coatings can be found elsewhere [6]. Table 2.…”

Section: Tribological Samplesmentioning

confidence: 99%

“…Commercially available PTFE-and Polyether ether ketone (PEEK) -based high bearing polymeric coatings have attracted the attention of several researchers in the field of airconditioning compressor systems in recent years [4][5][6][7]. Among the candidate coating materials, PTFE has received significant attention due to its low shear strength, and resulting low friction coefficient [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…Note that, the tribological performance of polymeric materials and coatings significantly depends on the working environment i.e., refrigerant and lubricant. Yeo et al studied the tribological performance of PEEK and PTFE based coatings for MAC systems in the presence of alternative refrigerant carbon dioxide (r744) CO 2 [6]. Interestingly, they demonstrated better performance for PTFE/MoS 2 compared to PTFE/PEEK coating in CO 2 environment, unlike HFC-134a based refrigerant.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Tribological interactions of advanced polymeric coatings with polyalkylene glycol lubricant and r1234yf refrigerant

Akram

Meyer

Polycarpou

2016

Tribology International

Self Cite

View full text Add to dashboard Cite

We report on the tribological performance of an aromatic thermosetting polyester (ATSP) blended with polytetrafluroethylene (PTFE as a coating material for airconditioning compressor applications. Tribological experiments were conducted in the presence of environmentally friendly r1234yf refrigerant and polyalkyleneglycol (PAG) lubricant, to compare state-or-the-art polymeric coatings with ATSP/PTFE. Results showed better performance for ATSP/PTFE, compared to PTFE-based and Fluorocarbon-based coatings under both dry and boundary lubricated sliding conditions. Significant reduction of 69% in friction was obtained with the inclusion of PAG lubricant, suggesting a synergistic combination for ATSP/PTFE and PAG/r1234yf. Morphological evolution via scanning electron microscopy revealed surface cracks and voids for PTFE/MoS 2 , responsible for negative interactions under lubricated condition, which was not the case for ATSP/PTFE coating.

show abstract

“…Inorganic-organic composites have attracted significant attention by introducing hard reinforcement fillers or friction-reducing fillers to improve the hardness, stiffness, compressive strength, and wear resistance performance of matrix [8,9]. The commonly used inorganic fillers or micro/nano particles include carbon nanotubes, glass fibers, MoS 2 , and ceramics [10,11]. Additionally, their chemical composition, sizes, shapes, and filling content can be tuned to meet the requirement of different application fields.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Aspect Ratio of Sodium Iron Titanate Whiskers on the Mechanical and Tribological Performances of Fluorocarbon Composite Coatings

Jiazhi

Yan

et al. 2019

Coatings

View full text Add to dashboard Cite

Inorganic–organic composite coatings with fluoroethylene vinyl ether (FEVE) resin as polymer matrix and sodium iron titanate (NFTO) whiskers with different aspect ratios as reinforcement filler are prepared by the liquid-phase blending method. The influence of aspect ratio and content of NFTO whiskers on the morphology, and the mechanical and tribological performances, of NFTO-reinforced FEVE composite coatings are investigated. The addition of NFTO whiskers can obviously enhance the mechanical and wear resistance performances of the composite coatings and reduce the friction coefficient. The worn surface and wear debris of the composite coatings are studied with scanning electron microscopy (SEM) to reveal the friction-reducing and wear resistance mechanisms. The composite coating filled with ~10 wt.% NFTO whiskers has the best wear resistance performance, since the monodispersed hard whisker can carry the load applied on the sliding surface and reduce the adhesive wear of the polymer matrix. Among the three types of NFTO whiskers, the whiskers with a medium aspect ratio show the best reinforcement effect since they provide the optimum mechanical support to the polymer matrix and cannot be pulled out from the matrix easily.

show abstract

Tribological performance of PTFE- and PEEK-based coatings under oil-less compressor conditions

Cited by 35 publications

References 25 publications

The effect of surface roughness on the transfer of polymer films under unlubricated testing conditions

The effect of surface roughness on the transfer of polymer films under unlubricated testing conditions

Tribological interactions of advanced polymeric coatings with polyalkylene glycol lubricant and r1234yf refrigerant

Influence of the Aspect Ratio of Sodium Iron Titanate Whiskers on the Mechanical and Tribological Performances of Fluorocarbon Composite Coatings

Contact Info

Product

Resources

About