This is mainly resulted by the enhanced lubricant performance with the formed silicon hydroxide Si(OH 4 film.
In the assessment of lubricant performance and also in various other contact applications it is of importance to know the frictional qualities of a surface.
Lubricant performance was compared with data generated in dry air earlier, and also with fresh Fomblin Zdol® under identical conditions of vacuum.
The advantage of this method over previous techniques is that it allows the differentiation of lubricants in a more controlled operating environment and evaluates the overall lubricant performance as opposed to individual properties.
A system of laboratory tests has been developed to study the lubricant performance under the very varied conditions appearing in different sheet forming operations such as stretch forming, deep drawing, ironing and punching.
Increasing the sputtering power applied on graphite target from 0 to 400 W, the film hardness increases significantly by one order of magnitude, and the optimized lubricant performance were obtained at 300 W.
The oxidation reactions that occur in a lubricant at elevated temperatures in the presence of atmospheric oxygen may lead to declined lubricant performance such as significant increase in kinematic viscosity observed in severe service conditions or during extended drain intervals [7].
An understanding of the relationship between chemical structure and lubricant performance is highly desirable from both a fundamental and a practical perspective, such knowledge being vital to improve the performance of mineral oils and to guide the design of future synthetic lubricants.
According to the friction tests run on a reciprocation ball-on-plate friction tester, it can be found that the SiO2/MoS2 hybrid nanoparticles as lubricant additive exhibit superior lubricating performances than individual nanopartcles.
"These products can be used in coatings, lubricants and performance plastics," says Biorizon project manager Murk van Rooijen.
