A Discussion of the Relationship Between the Structure of the Transition Metal Dichalcogenides and Their Lubrication Performance

Abstract

In an attempt to put irreducible representation of symmetry point group to use, the ligand group orbit of some transition metal dichalcogenides, the compounds TX₂ (T = Ti, Zr, Hf, V, Nb, Mo, W; X = S, Se) and their energies were evaluated. The level scheme of molecular orbitals of the TX₂ compounds and a simple model for bond structure is qualitatively given. The relationship between the structure of these compounds and their lubrication performance is discussed. It is indicated that pile-up type and symmetry type, configurations in which electrons occupy the d orbital, provide better lubrication performance.

Presented at the 36th Annual Meeting in Pittsburgh, Pennsylvania, May 11–14, 1981

Notes

Presented at the 36th Annual Meeting in Pittsburgh, Pennsylvania, May 11–14, 1981