Friction and wear of SiC fiber-reinforced borosilicate glass mated to steel

• Published in: Wear Vol. 225; pp. 885 - 895
• Main Authors: Zum Gahr, K.-H, Voelker, K
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.04.1999
• Subjects: Friction; SiC fiber-reinforced borosilicate glass; Wear; Friction; Wear; SiC fiber-reinforced borosilicate glass
• ISSN: 0043-1648; 1873-2577
• DOI: 10.1016/S0043-1648(99)00054-X

Tribological performance of a SiC fiber-reinforced borosilicate glass was studied in unlubricated contact with a hardened and tempered hot-work tool steel. Static and kinetic friction as well as wear in oscillating sliding contact were measured as functions of fiber orientation, relative humidity (r.H.) and testing temperature up to 500°C in tribometers using ring-on-block geometry. The results showed that tribological properties were determined by fracture and tribochemically controlled processes depending on contact pressure, fiber orientation, humidity and temperature. Parallel (P) fiber orientation resulted in about equal static friction coefficient, but lower kinetic friction coefficient compared with transverse (TR) fiber orientation. Kinetic friction and amount of linear wear were reduced with increasing humidity. While static friction increased continuously with temperature, kinetic friction increased between 25 and 100°C strongly, but then the high value of the friction coefficient was constant up to 500°C. Maximum amount of wear was measured at 300°C.