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Antiwear synergism of borates and cadmium diamyldithiocarbamate
Author(s) -
Junbin Yao
Publication year - 1997
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.3010100105
Subject(s) - cadmium , boron , metal , substrate (aquarium) , chemistry , inorganic chemistry , materials science , metallurgy , organic chemistry , geology , oceanography
Certain combinations of an oil‐soluble cadmium compound, e.g., cadmium diamyldithiocarbamate, with organo‐borates, either sulphurised or nonsulphurised, give better antiwear performance than do the individual components. A synergistic mechanism is postulated, in which boron atoms with vacant p orbitals catalyse triboreduction of cadmium on rubbing surfaces, producing elemental cadmium. The cadmium deposits on, and alloys with, the metal surface to protect the substrate against wear.