Tribological properties of boron carbide in sliding against WC ball

• Published in: International journal of refractory metals & hard materials 2015-07, Vol.51, p.110-117
• Main Authors: Sonber, J.K., Limaye, P.K., Murthy, T.S.R.Ch, Sairam, K., Nagaraj, A., Soni, N.L., Patel, R.J., Chakravartty, J.K.
• Format: Article
• Language: English
• Subjects: Boron carbide; Cemented carbides; Coefficient of friction; Friction; Sliding; Tribology; Tungsten carbide; Wear; Wear mechanisms; Wear rate
• ISSN: 0263-4368; 2213-3917
• DOI: 10.1016/j.ijrmhm.2015.03.010

Friction and wear properties of the hot pressed boron carbide have been investigated 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 evaluated. Wear mechanism has been analysed by using optical microscopy, SEM-EDS and stylus profilometer techniques. Low coefficient of friction (COF) was measured as 0.15 at 10N load and 10Hz frequency. Load enhancement from 3 to 10N at 10Hz frequency led to a reduction of COF from 0.20 to 0.15. Specific wear rate of boron carbide has been evaluated in the order of 10−6mm3/Nm. Both abrasive and tribo-chemical reaction wear mechanisms are observed on the worn surface of boron carbide (flat). [Display omitted] •Low coefficient of friction of 0.15 was measured for B4C under sliding against WC-Co ball.•Low specific wear rate in the order of 10−6mm3/Nm was measured for all the conditions.•Both abrasive and tribo-chemical reaction mechanisms are observed on the worn surface of boron carbide (flat).