Effect of adsorbate monolayers on dry friction

This section deals with the question, what is the effect of adsorbed monolayers on friction [. ]. 

This section addresses the question, is it possible to lubricate ceramic materials by a reactive gas phase  

Under high vacuum (10 ° hPa), SiC friction was dominated by high adhesion and by fracture, compaction and attrition of the spheroidal grains in the interfacial region. No preferential shear plane appeared to form, but amor-phization of SiC took place mainly at the edges of the grains. Consequently the friction was high (0.8). 

Thus friction of alpha silicon carbide appears to be tribochemically controlled and very dependent on the reactive gases present in the surrounding en- 

Relationship of Durability to Microstructure of IBAD M0S2 Coatings [33] 

---