Browsing by Author "Deepak, K.B."

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Enhancing tribological performance of Ti-6Al-4V by sliding process
(Taylor and Francis Ltd. michael.wagreich@univie.ac.at, 2018) Kumar, D.; Deepak, K.B.; Muzakkir, S.M.; Wani, M.F.; Lijesh, L.
The exceptional combination of mechanical, physical, and anti-corrosive properties of titanium alloy Ti-6Al-4 V (Ti64) makes it idle material for the applications, e.g., aerospace, automobile, chemical, medical etc. The tribological performance of the Ti64 can be enhanced by developing a protective layer or coating on its surface. A tribo-oxide protective layer on the surface of Ti64 through rubbing process was developed. For this, the tribological behavior of tribo pair, Ti64 pin-alumina disc was studied under dry ambient condition for diverse loading and sliding speed conditions, using pin on disc experimental set-up. The tribological performance was quantified in terms of coefficient of friction and wear rate. The mechanical properties like nano-hardness and elastic modulus of the pins surface were determined. The tribological behavior were extremely transient and depend greatly on what the surface has precisely experienced. Experimental results revealed that deprived tribological properties and higher oxide layer was selected. To enhance the tribological behavior of deprived tribological behavior, the pin with high oxide layer is used.
Enhancing tribological performance of Ti-6Al-4V using pin on disc setup
(2018) Kumar, D.; Lijesh, K.P.; Deepak, K.B.; Kumar, S.
Titanium (Ti) alloy Ti-6Al-4V (Ti64), possesses a inimitable combination of mechanical, physical and corrosion properties, which makes them desirable for applications like aerospace, automobile, chemical and energy industries devices etc. However this alloy of Ti exhibits poor tribological (friction and wear) properties, which limits their full fledged implementation. However, the tribological behavior of T164 can be enhanced by providing a coating or a protective layer on it, which posses superior tribological properties. It is hypothesized that by a layer of alumina on the can be deposited on the surface of Ti64, by sliding them in dry-ambient condition using Pin On Disk (POD) machine. To validate the hypothesis, experiments were performed for different normal loading conditions of 13.7N, 68.7N and 109.9N at sliding speed of 0.01m/s and for a sliding distance of 1000m. The tribological performance of the experiments, were evaluated by measuring Coefficient of Friction (COF) and weight loss values. To understand the tribological mechanism and behaviour, In-situ analysis was performed on the pin using (i) Scanning Electron Microscopy (SEM) to understand the wear morphology, and (ii) Energy Dispersive Analysis of X Ray (EDAX) to estimate the deposition of alumina on surface of the pins. Based on the obtained results, the most favorable experimenting condition required for deposition of alumina over Ti64 will be identified. Finally, experiment on POD will be repeated for the selected experimenting condition and will be continued for the worst tribological condition. The obtained COF and wear values after performing the experiment will be presented. � 2018 Author(s).
Enhancing tribological performance of Ti-6Al-4V using pin on disc setup
(American Institute of Physics Inc. subs@aip.org, 2018) Kumar, D.; Lijesh, K.P.; Deepak, K.B.; Kumar, S.
Titanium (Ti) alloy Ti-6Al-4V (Ti64), possesses a inimitable combination of mechanical, physical and corrosion properties, which makes them desirable for applications like aerospace, automobile, chemical and energy industries devices etc. However this alloy of Ti exhibits poor tribological (friction and wear) properties, which limits their full fledged implementation. However, the tribological behavior of T164 can be enhanced by providing a coating or a protective layer on it, which posses superior tribological properties. It is hypothesized that by a layer of alumina on the can be deposited on the surface of Ti64, by sliding them in dry-ambient condition using Pin On Disk (POD) machine. To validate the hypothesis, experiments were performed for different normal loading conditions of 13.7N, 68.7N and 109.9N at sliding speed of 0.01m/s and for a sliding distance of 1000m. The tribological performance of the experiments, were evaluated by measuring Coefficient of Friction (COF) and weight loss values. To understand the tribological mechanism and behaviour, In-situ analysis was performed on the pin using (i) Scanning Electron Microscopy (SEM) to understand the wear morphology, and (ii) Energy Dispersive Analysis of X Ray (EDAX) to estimate the deposition of alumina on surface of the pins. Based on the obtained results, the most favorable experimenting condition required for deposition of alumina over Ti64 will be identified. Finally, experiment on POD will be repeated for the selected experimenting condition and will be continued for the worst tribological condition. The obtained COF and wear values after performing the experiment will be presented. Â© 2018 Author(s).