The sulphides, Selenides, and Tellurides of Titanium, Zirconium, Hafnium, and Thorium. IV. Lubrication properties of the graphitic chalcogenides

Abstract

The majority of the chalcogenides of Ti, Zr, Hf, and Th having layer lattice structures and/or graphitic nature were tested for possible lubricating properties. Although none of these materials adheres to the common metals, it was shown that the shearing forces necessary to cause sliding between layers are in general low and comparable to those involved in molybdenum disulphide and graphite.