Abstract
Friction and wear properties of the hot pressed composite of pre-alloyed (TiCr)B2+20%MoSi2 (4.81g/cm3) were studied at different loads and frequencies under reciprocative sliding, using a counter body of cemented tungsten carbide (WC-Co) ball. Coefficient of friction, wear volume and wear rate were measured. Optical microscopy and SEM-EDS analysis were carried out to understand the wear mechanism and chemistry of debris. A lowest value of coefficient of friction (COF) was measured as 0.38 at 10N load and 10Hz frequency. At 15Hz frequency, the increase in load from 3N to 10N results in reducing the COF from 0.56 to 0.39. One order decrease in magnitude of specific wear rate was observed with an increase in load from 3N to 10N. Abrasive wear was the main mechanism identified in both flat and counter body materials. Severe wear was seen in counter body material (WC-Co) compared to base material of (Ti0.85Cr0.15)B2+20%MoSi2 composite.
Sign-in/Register to access full text options 
Free) 
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 call
