Nanoparticles Made of Metal Dichalcogenides

Lucile Joly-Pottuz and Fabrice Dassenoy 2,1 Tribological Properties of 2H-M0S2 

The majority of M0S2 films deposited in vacuum contains a nonnegligible quantity of oxygen (10 to 20% in atomic concentrations). These oxygen atoms easily replace sulfur atoms in the structure of M0S2, creating an isostructural phase called MoS2-xO c. This substitution is easily observed by X-ray diffraction with the displacements of interreticular 

Nanolubricants Edited by J. M. Martin and N. Ohmae 2008 John Wiley Sons, Ltd. ISBN 978-0-470-06552-5 

Obtaining suprafriction with M0S2 requires three conditions [6]  

Formation of a transfer film on the antagonist surface. Its formation depends on the capacity of adhesion of M0S2 on the metallic surface. This film is formed very quickly. 

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Chapter 2 is devoted to nanoparticles made of metal dichalcogenides. Solid lubricants of this kind have long been in use, albeit not in the form of such tiny particles. Fullerene-like structures are very attractive and are now used in practical situations. The production of such materials is only briefly described, while their mechanisms of action are addressed in much more detail, using advanced analytical tools. Other particles such as nanowires are also studied. 

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