Study On Friction And Wear Characteristic Of Glass-Ceramic Against Cast Iron H300 And Steel 45

Glass-ceramic composed of calcium-aluminous-silicate have excellent characteristics such as low density, high mechanical strength, abrasion-resistance and chemical stability, which make it have wide broad applications in space and aircraft, mechinery, architecture and chemical engineering. The raw materials of the system is abundant, therefore the research about the system has become a focus of glass-ceramic. The compositions and properties, nucleation and crystallization of the system have been made considerable research, however, it has not been reported much to improve the abrasion-resistance so as to widen its applications as structure parts in abrasion and erosion environments, here we would like to analyze a glass-ceramic with good abrasion to meet better needs for structural engineering applications.Friction and wear are important application performance for engineering materials. Friction and wear properties of glass-ceramic against cast iron H300 and steel 45 at various vertical pressure and initial velocities were investigated on a MM-1000 type wear testing machine. Tribological characteristics of the glass-ceramic was evaluated, especially in the effects of load, sliding speed on friction and wear performance. The wear mechanism was analyzed by the technology of surface micro-analysis and principles of tribology. The results show that the distance average friction coefficients of glass-ceramic/ cast iron H300 under various test conditions are more stable than those of glass-ceramic/ steel 45, and that the mass losses of glass-ceramic, cast iron H300 and steel 45 are all small. The surface temperature increment of glass-ceramic and cast iron H300 is a little lower than that of glass-ceramic and steel 45. The wear mechanisms of the glass-ceramic include adhesion wear, abrasive wear and fatigue wear.