In this research, tribological behavior of Ti-Ni-P intermetallic coatings on titanium substrates have been investigated under dry reciprocating conditions. Hardness profile testing results exhibit that high surface hardness has been attained and static indentation result shows that the intermetallic coating has better adhesion strength than the conventional ceramic coatings. In this respect, th...

Owing to its superior mechanical properties, nanodiamond (ND) holds great potential to improve tribological characteristics of composites. In this study, we report on the wear and dry friction of epoxy-ND composites prepared from as-received and aminated ND across the length scale range from macro to nano. Comparison of macroscale, microscale, and nanoscale frictional behavior shows that ND is ...

The WSe(2) nanorods were synthesized via solid-state reaction method and characterized by X-ray diffractometer, TEM, and HRTEM. The results indicated the WSe(2) compounds had rod-like structures with diameters of 10-50 nm and lengths of 100-400 nm, and the growth process of WSe(2) nanorods was discussed on the basis of the experimental facts. The tribological properties of WSe(2) nanorods as ad...

It is proposed to use elastomeric composites as artificial joint bearing surfaces to increase their fluid film lubrication and therefore reduce the number of failures which have been attributed to wear mechanisms. The fluid generated between the surfaces supports part of the load and prevents direct contact of the bearing surfaces. In order to obtain optimum elastohydrodynamic lubrication, elas...

Nowadays titanium alloys are extensively used for aerospace and biomedical applications. However, despite good mechanical properties and excellent corrosion resistance they possess poor wear resistance and a tendency to galling and seizure. In this study the tribological properties of experimental Ti-Si-Zr based alloys were studied using a standard ball-on-disc wear testing system. The wear and...

Use of the ultrahigh vacuum methods of surface science allows the preparation and study of highly characterized solid–solid interfaces for tribological investigations. One of the limiting factors in the progress of our understanding of tribology has been the inability to generate solid–solid interfaces with well-defined, reproducible, atomic scale structures and compositions. The preparation of...

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The correct tribological design will have a considerable effect on a gear’s service life and efficiency. The purpose of this thesis is to clarify the impact of variation in the gear tooth flank tribological system on the gear contact load capacity – to increase the understanding of how surface topography and lubricant interact. In this thesis the variation in surface topography inherent in the ...