ISSN:0954-0075    

DOI:10.1002/ls.3010010102

出版商:John Wiley&Sons, Ltd    

年代:1988

数据来源: WILEY

摘要:

AbstractWork is reviewed on the adsorption properties of typical friction reducing additives, at monolayer coverage, operating in the boundary lubrication regime. It looks at adhesive interactions, lateral interactions between adsorbate molecules, and transition temperatures. The adsorption properties of typical friction reducing additives can be accounted for by hydrogen bonding to surfaces and the lateral interactions between adsorbate molecules.

ISSN:0954-0075    

DOI:10.1002/ls.3010010103

出版商:John Wiley&Sons, Ltd    

年代:1988

数据来源: WILEY

摘要:

AbstractThis paper reports an attempt to determine the applicability of Kraemer and Huggins equations of dilute solutions, to the VI improver polymethacrylate. The equations are used to provide an estimate of the intrinsic viscosity of the polymer in a given solvent at a given temperature.

ISSN:0954-0075    

DOI:10.1002/ls.3010010104

出版商:John Wiley&Sons, Ltd    

年代:1988

数据来源: WILEY

摘要:

AbstractThermally refined gears were tested under the effects of various modern industrial gear oils, viscosity 1SO VG 220. The wear of the gears was measured for each oil, including tooth surface roughness and the tooth fillet strain of the pinion. It is concluded that graphite additivated gear oil shows excellent wear resistance and surface roughness over sulphur‐phosphorus and organic Mo compound added oils, as well as less iron oxid

ISSN:0954-0075    

DOI:10.1002/ls.3010010105

出版商:John Wiley&Sons, Ltd    

年代:1988

数据来源: WILEY

摘要:

AbstractThis paper briefly reviews the development of linear hydrogenated diene copolymers as VI improvers, and reports on a novel class of VI improvers, the hydrogenated, star‐branched polyisoprenes. The viscometric properties of multigrade oils containing such products and their performance in gasoline and diesel engines will be describe

ISSN:0954-0075    

DOI:10.1002/ls.3010010106

出版商:John Wiley&Sons, Ltd    

年代:1988

数据来源: WILEY

摘要:

AbstractCertain S‐containing organic compounds were synthesized and their extreme pressure (EP) properties assessed. The series of compounds studied were: S‐alkylisodithiobiurets, alkyl‐S‐alkyl xanthates, S‐alkylisothioamides, S‐benzylisothiocarbamides and 1‐formamidino‐2‐benzyliso‐3‐arylthiocarbamides. These additives were compared with a commercial additive. The tribological end effects were studied using a Scanning Electron Microscope. Some of the compounds tested were found to be effective EP additives.Wherever possible, a plausible explanation for the enhanced activity has been given, and we have attempted to correlate the effect of substituents on efficiency. Also, the effect of additives on balls of different compositions is discussed. The possibility of replacing the costly chromium steel alloy balls by less costly mild steel balls is suggested.Some of the additives developed are found to be effective on balls of certain compositions while they are a total failure on the chromium steel balls. The studies reveal that some additives are effective on mild steel balls as well as chromium alloy steel balls. They can be very good substitutes for commercial additives with bearing balls of standard composition.As chromium alloy steel balls are much costlier there is a need to replace expensive alloy steel balls with cheaper low carbon steel balls, for certain specific purposes. This can be achieved by using suitable indigenous additives that are found to be effective on l

ISSN:0954-0075    

DOI:10.1002/ls.3010010107

出版商:John Wiley&Sons, Ltd    

年代:1988

数据来源: WILEY

ISSN:0954-0075    

DOI:10.1002/ls.3010010101

出版商:John Wiley&Sons, Ltd    

年代:1988

数据来源: WILEY