1. Main types of lubricant additives
Lubricant additives are differentiated according to their intended purpose:
to prevent undesirable changes due to tampering in service. These are the inhibitors;
to improve the initial properties of the base oil. These are called improvers.
They can also be classified according to their very general mode of action. We distinguish between :
those which act chemically in the lubricant mass, limiting oxidation (oxidation inhibitors) or neutralizing acid pollutants (overbased detergents);
those that act chemically on surfaces, protecting non-ferrous metals against acid corrosion (passivating and deactivating anticorrosives), preventing adhesive wear and its ultimate form, surface seizure, forming...
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Main types of lubricant additives
Additives acting chemically in the lubricant mass
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