Three-body abrasive wear resistance of iron matrix composites reinforced with ceramic particles. (January 2014) - Zheng, Kaihong
Pure aluminum oxide (Al2 O3 ), ZrO2 toughened Al2 O3 (ZTA; 25–30% ZrO2 ), and ZTA (55–60% ZrO2 ) ceramic particles reinforced Cr25 matrix composites are successfully fabricated by the infiltration casting process. The volume fraction of ceramic particles in the composites is 47–55%. The interface structure between ceramic particles and the matrix was analyzed by digital probing microscopy and was found to be continuous mechanical bonding. The wear behavior of the composites was studied by a three-body abrasive wear tester. ZTA (55–60% ZrO2 ) reinforced Cr25 composite has excellent wear resistance which is approximately six times higher than that of the high chromium cast iron matrix. It is discovered that the wear mechanism of composites is micro-cutting and fatigue stripping. A correlation exists between the wear resistance of composites and the strength of ceramic particles.