O/)licrrl iirtciferoi~~ctiy is used to stz~lly the film thickness of pccrses, colrl of soap srcspeiuioiu and of their base oils in point or lii,e cwrloct. 111 mze cllse, sa?tiples were taken born a grease-lubriccrtc(l p111.i~~c-Occiring test c$/.er 5%and 25-million revolutions. The effcc/I'~~c ~i.scosity of (1 pease t~itder the very high shear rates of the order i f 1/2 X lo-" S-I e i z c o z ~...

The rheological characteristics of one mineral oil and two ionic liquid (IL) based lubricating greases were explored as a function of thickener concentration. The ILs used are 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([BMIM][TFSI]) and trihexyltetradecylphosphonium bis(trifluoromethylsulfonyl)imide ([P6,6,6,14][TFSI]), with polytetrafluoroethylene (PTFE) particles used as t...

Two types of thickener systems, lithium complex (LiX) and polypropylene (PP), were chosen to evaluate graphite, graphene oxide (GO) reduced (rGO) as grease additives at a concentration 0.1 wt%. To enhance the additive dispersibility, mixture polyalphaolefin oil (PAO) soluble synthetic polyalkylene glycol (OSP-68) was used base oil. The greases evaluated in i) silver-coated copper contacts simul...

Grease lubricants are widely used in rolling contact applications to reduce friction between two surfaces. Improper lubrication may cause high stress and deformation the bearings lead machine failure The purpose of this study is investigate coefficient produced by newly developed palm oil-based grease characteristics lubricated roller bearings. In work, new greases was evaluated experimentally ...

The effects of incorporating conjugated linoleic acid (CLA) and fish oil in laying hen diets on egg CLA, n-3 fatty acid, tocopherol, and TBA reactive substances (TBARS) during 60 d of storage were investigated. Hens were fed corn-soybean meal-based diets containing 3% yellow grease (YG), 2.75% yellow grease + 0.25% CLA (YG-CLA), 2.5% yellow grease + 0.25% CLA + 0.25% fish oil (YG-CLA-FO), or 2....

Five common ball bearing greases were studied using a grease-on-paper test configuration, where the bleeding of is described by dynamics driving capillary pressure provided paper and its opposing counterpart in grease matrix. The Washburn-like model for extracting retaining pressure, determined affinity oil matrix, has proven to be applicable made various type thickeners base oils, can potentia...

Recyclable and reusable heterogeneous diarylammonium catalysts are highly effective in catalyzing the esterification of the free fatty acid (FFA) present in greases to methyl esters to reduce the FFA content from 12-40 wt% to 0.5-1 wt%; the resulting ester-glyceride mixture (pretreated grease) could then be readily converted to methyl esters by base-catalyzed transesterification.