ABSTRACT The paper evaluates the effect of nitriding on the wear behavior of graphite reinforced aluminum 6061 alloy composites. The composites were prepared using the liquid metallurgy technique. The content of graphite in the composites was varied from 3 to 7% (by weight) in steps of 2%. The nitriding process was carried out at 500°C for 24 hours. Three categories of specimens, namely, the nitrided composites, non-nitrided composites, as well as the alloy specimens were tested for their wear behavior. Pin-on disc equipment was used for wear testing. X-Ray Diffraction technique (XRD) was used to confirm the implantation of nitrogen in the composites. It was observed that the nitrided composites have better wear resistance than the non-nitrided composites.
Cite this paper
nullB. Girish, B. Satish and H. Vitala, "Effect of Nitriding on Wear Behavior of Graphite Reinforced Aluminum Alloy Composites," Journal of Surface Engineered Materials and Advanced Technology, Vol. 1 No. 2, 2011, pp. 73-79. doi: 10.4236/jsemat.2011.12011.
 P. H. Chong, H. C. Man and T. M. Yue, “Microstructure and Wear Properties of Laser Surface Claded Mo-WC MMC on AA6061 Aluminium Alloy,” Surface and Coatings Technology, Vol. 145, No. 1-3, 2001 pp. 51-59. doi:10.1016/S0257-8972(01)01286-5
 L. Liu, W. W. Li, Y. P. Tang, B. Shen and W. B. Hu, “Friction and Wear Properties of Short Carbon Fiber Reinforced Aluminium Matrix Composites,” Wear, Vol. 266, No. 7-8, 2009, pp.733-738. doi:10.1016/j.wear.2008.08.009
 Y. Sahin and K. Ozdin, “A Model for Abrasive Wear Behaviour of Aluminium Based Composites,” Materials and Design, Vol. 29, No. 3, 2008, pp. 728-733. doi:10.1016/j.matdes.2007.02.013
 A. T. Alpas and J. Zhang, “Effect of Microstructure and Counterface Materials on the Sliding Wear Resistance of Particulate Reinforced Aluminium Matrix Composites,” Metallurgical Transactions, Vol. 25, 1994, pp. 969-983.
 D. D. Nolan, S. W. Huang, V. Leskovsek and S. Braun, “Sliding Wear of Titanium Nitride Thin Film Deposited on Ti-6Al-4V alloy by PVD and Plasma Nitriding Processes,” Surface and Coatings Technology, Vol. 200, No. 20-21, 2006, pp. 5698-5705. doi:10.1016/j.surfcoat.2005.08.110
 S. C. Sharma, B. M. Girish, D. R. Somashekar, B. M. Satish and R. Kamath, “Sliding Wear Behavior of Zircon Particles Reinforced ZA-27 Alloy Composite Materials,” Wear, Vol. 224, No. 1, 1999, pp. 89-94. doi:10.1016/S0043-1648(98)00334-2
 N. S. Poonawala, A. K. Chakrabarti and A. B. Chattopadhyay, “Wear characteristics of Nitrogenated Chromium Cast Irons,” Wear, Vol. 162, 1993, pp. 580-588. doi:10.1016/0043-1648(93)90544-V
 P. K. Rohatgi, S. Ray and Y. Lin, “Tribological Properties of Metal Matrix Graphite Particle Composites,” International Materials Review, Vol. 37, 1992, pp. 129-138.
 P. P. Lee, T. Savaskan and E. Laufer, “Wear Resistance And Microstructure of Zn-Al-Si and Zn-Al-Cu alloys,” Wear, Vol. 117, No. 1, 1987 pp. 79-84. doi:10.1016/0043-1648(87)90245-6
 Y. Sahin, “Tribological Behaviour of Metal Matrix and Its Composites,” Materials and Design, Vol. 28, No. 4, 2007, pp. 1348-1352. doi:10.1016/j.matdes.2006.01.032