Tribo-chemistry and tribo-corrosion

Abstract

Tribological losses at interfaces can cost important recourses such as time and money. Knowledge of interface chemistry is vital to understand fundamentals of tribological parameters. Sliding of two surfaces provide favorable thermodynamic parameters for chemical reactions to take place at these interfaces. The study of these reactions primarily studied under special fields of tribology, i.e., tribo-chemistry and tribo-corrosion. It is difficult to separate these two fields. Usually, study of tribo-corrosion deals with surface deterioration due to the synergism of tribological factors, electrical stimulus, and corrosion. The thermodynamics approach can be utilized to understand the tribo-chemical reactions. This chapter provides different approaches taken to study these two fields. In this chapter, some of the mechanisms responsible for and applications of tribo-chemical interactions are discussed for example tribo-emission, tribo-chemical polishing, tribo-chemistry of magnetic media drive. Tribo-corrosion of coatings and metallic materials is briefly discussed. The case study of complex tribo-chemistry in sugarcane roller mill is included.