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Additive—additive interaction: A study of the ep and AW performance of sulphurised jojoba oil and sulphurised xanthate in the presence of mocontaining friction modifiers
Author(s) -
Gupta A. K.,
Bhatia H. C.,
Tuli D. K.,
Verma A. S.,
Rai M. M.,
Bhatnagar A. K.
Publication year - 1998
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.3010100205
Subject(s) - dithiocarbamate , xanthate , molybdenum , chemistry , sulfur , molybdenum disulfide , organic chemistry , nuclear chemistry , materials science , metallurgy
The extreme‐pressure (EP) and antiwear (AW) performance of three soluble molybdenum compounds (commercial molybdenum dialkyldithiophosphate, commercial molybdenum dialkyl dithiocarbamate, and synthesised molybdenum dialkyl dithiocarbamate), and two sulphur‐containing EP compounds (sulphurised jojoba oil and sulphurised O‐stearyl‐S‐oleyl xanthate) have been studied alone and in combination, using a four‐ball tester. The behaviour of the additives in combination has been found to be selective, and dependent on the chemistry and ratio of the additive components. In general, the addition of Mo‐type friction modifiers (FM) to sulphurised EP compounds has shown a synergism, of varying order, in their EP and AW properties.