The use of molybdenum in lubricants
Molybdenum desulfurization is the most common natural form of molybdenum, which is extracted from ore and purified and used directly as a lubricant. It is a very effective lubricant because radon dioxide is a layered structure. These layers slide between each other, allowing for free flow on steel and other metal surfaces, even under heavy pressure, such as bearing surfaces. Because radon dioxide is formed by geothermal action, it has the chemical stability to withstand thermal pressure. A small amount of sulfur reacts with iron and forms a sulphides layer that is compatible with molybdenum sulfide and maintains a lubrication film. Molybdenum desulfurization is inert to many chemicals and lubricates under vacuum, whereas graphite is not.
Molybdenum desulfurization has many unique properties compared to other solid lubricants, including:
Unlike graphite, the coefficient of friction is low (0.03 to 0.06), not caused by adsorption film or gas, lubricity is inherent in itself;
Strong affinity with metal;
With membrane molding structure;
Yield strength up to 3450MPa (500 klb/sq inch);
Stability in most solvents;
Excellent lubrication performance in air at low temperatures of 350℃ (inert or vacuum conditions at 1200℃)
When mixed with water-soluble sulfur compound solutions, radon compounds are lubric and corrosion-refringing in cutting fluids and metal forming materials. Oil-soluble sulfur compounds, such as thiophosphates and thio-aminomates, prevent engine wear, oxidation and corrosion. Several commercial manufacturers produce these lubrication additives.
