Abstract
Friction and wear properties of the hot pressed zirconium diboride were investigated at different loads and frequencies under reciprocative sliding, using a counter body of tungsten carbide (WC-Co) ball. Coefficient of friction, wear volume and specific wear rate were evaluated. Wear mechanism have been analysed by using optical microscopy and SEM-EDS techniques. Coefficient of friction (COF) for monolithic zirconium diboride under dry reciprocative linear sliding wear with WC-Co ball was evaluated between 0.8 and 0.4 at different loads and frequencies. Load enhancement was found to decrease the COF of ZrB2 with WC ball. An increase in load from 5 N to 20 N decreased the COF from 0.84 to 0.52 at 10 Hz frequency. Increase in sliding frequency also resulted in decrease in COF. It is decreased from 0.52 to 0.43 by increasing frequency from 10 Hz to 15 Hz at 20 N. Specific wear rate of zirconium diboride were evaluated in the order of 10−5 mm3/N·m. Tribo chemical layer formation was observed on the worn surface of zirconium diboride (flat) along with shallow abrasive grooves.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Journal of Refractory Metals and Hard Materials
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
