Sliding Wear Behavior of Cu + Sn + Cr Composites by Taguchi Technique

Abstract

In tribological industries, metal matrix composites are now being more commonly used because of their inherent properties such as high stiffness, high strength, high toughness. The effect on tribological properties of chromium-reinforced bronze-based metal matrix composites was investigated. In a bronze matrix, chromium metal powders of 40 μm particle size were reinforced to yield composite samples of ratios 5, 10 and 15 percent by means of powder metallurgy. As per ASTM G99, the manufactured composite specimens were subjected to sliding wear tests using pin-on—disc system. The sliding wear experiments were carried out by following the Taguchi methodology and the variance approach analysis was used to assess the effect of wear factors such as applied load, sliding speed, material composition and sliding distance on wear resistance of manufactured composites. In addition, multiple linear regression analysis and signal-to-noise ratio were used to analyze bronze-based metal matrix composite wear behavior. The injection of chromium metal powders into bronze matrix material as reinforcement material increases the tribological characteristics.