The tribological performance of the sliding bearings which are probably made of polymers, which is subjected to magnetic field, is of great intense. The wear of epoxy composites filled by metallic particles such as iron, copper and aluminum scratched by steel indenter is investigated. The wear scar width of the scratch was measured by an optical microscope. It was found that wear displayed by the scratch of epoxy filled by the metallic filling materials such as iron, copper and aluminum increased with increasing applied load. As the content of the metallic filling materials increased, wear slightly increased due to the reduction in cohesive stress inside the matrix as well as the epoxy transfer into the indenter surface might be responsible for that behavior. For epoxy filled by iron, when the magnetic field was applied to the contact area wear significantly decreased. Increasing the intensity of the magnetic field showed slight wear increase. Wear displayed by the scratch of epoxy filled by copper showed higher values than that observed for copper filled epoxy. Presence of the magnetic field might generate electric current at the contact area leading to an increase in the intensity of the electric static charge. Moreover, wear of epoxy filled by aluminum showed lower values than that observed for epoxy composites filled by copper and higher than that displayed by iron filled epoxy composites. Under the effect of magnetic field, wear significantly increased. This behavior could explained on the basis that the presence of magnetic field accompanied by the movement of the indenter in the epoxy composites generated electric current passing through the steel indenter which caused softening of the epoxy composites. In that condition removal of epoxy from the wear track was easier and epoxy transfer into the steel indenter was accelerated.
Abdel-Jaber, G.T., Mohamed, M.K. and Ali, W.Y. (2014) Effect of Magnetic Field on the Friction and Wear of Polyamide Sliding Against Steel. Materials Sciences and Applications, 5, 46-53. http://dx.doi.org/10.4236/msa.2014.51007
Chiriac, A.P., Neamtu, I. and Simionescu, C.I. (2000) Polymerisation in a Magnetic Field, 12. A Comparative Study Regarding Some Properties of Poly (acrylamide) Synthesised in a Magnetic Field. Polymer Testing, 19, 405-413. http://dx.doi.org/10.1016/S0142-9418(99)00012-4
Salikhov, K., Molin, Y., Sagdeev, R. and Buchachenko, A. (1984) Spin Polarization and Magnetic Effects in Radical Reactions. Elsevier Science, Amsterdam.
Buchachenko, A., Sagdeev, R. and Salikhov, K. (1978) Magnetic and Spin Effects in Chemical Reactions. Nauka, Moscow.
Liepins, R. (1996) In Polymeric Materials Encyclopedia. CRC Press, Cleveland, OH.
Landee, C., Melville, D. and Miller, J. (1990) In: Gatteschi, D., Kahn, O., Miller, J.S. and Palacio, A., Eds., Magnetic Molecular Materials, Kluwer Academic, Amsterdam, Vol. 198, p. 395.
Bely, V.A., Pinchuk, L.S., Klimovich, A.F. and Guzenkov, S.I. (1989) Tribological Aspects of Electret State Generation in Polymers. Proceedings of the 5th International Congress on Tribology, EUROTRIB 89, Vol. 2, 13-16 June 1989, Espo, 276-281.
Koutkov, A.A. (1970) A Brief Summary of Recent Work on the Friction and Wear of Metals and Polymers under Boundary Conditions. Wear, 15, 294-296. http://dx.doi.org/10.1016/0043-1648(70)90020-7
Muju, M. and Ghosh, A. (1977) A Model of Adhesive Wear in the Presence of a Magnetic Field. Wear, 41, 103-116. http://dx.doi.org/10.1016/0043-1648(77)90195-8
Muju, M. and Ghosh, A. (1980) Effect of a Magnetic Field on the Diffusive Wear of Cutting Tools. Wear, 58, 137-145. http://dx.doi.org/10.1016/0043-1648(80)90218-5
Hiratsuka, K. (1993) Wear of Metals in a Magnetic Field in Boundary Lubrication. In: Proceedings of the 19th Leeds-Lyon Symposium on Tribology, Elsevier, Amsterdam, 1-8. http://dx.doi.org/10.1016/S0167-8922(08)70383-3
Kumagai, K., Takahashi, M. and Kamiya, O. (1992) Wear Behaviour in the Presence of Magnetic Fields for Pin-on-Disc Repeated Dry Wear Tests. Tribology International, 25, 91-98. http://dx.doi.org/10.1016/0301-679X(92)90085-2
Bhushan, B. (1986) Electromagnetic Effects on the Friction and Wear of Metal. Wear, 110, 256-261.
Forehand, S. and Bhushan, B. (1997) In Study of Wear Mechanisms in Magnetic Thin-Film Discs. Tribology Transactions, 40, 549-558. http://dx.doi.org/10.1080/10402009708983692
Paulmier, D., El Mansori, M. and Zaidi, H. (1997) Study of Magnetized or Electrical Sliding Contact of a Steel/Graphite Couple. Wear, 203-204, 148-154.
Chin, K., Zaidi, H. and Mathia, T. (2005) Oxide Film in Magnetized Sliding Steel/Steel Contact Analysis of the Contact Stress Field and Film Failure Mode. Wear, 259, 477-481. http://dx.doi.org/10.1016/j.wear.2005.02.122
Samy, A.M., Mahmoud, M.M., Khashaba, M.I. and Ali, W.Y. (2007) Friction of Rubber Sliding against Ceramics, II. Oil And Oil Diluted by Water Lubricated Conditions. KGK—Kautschuk Gummi Kunststoffe, 60, 693-696.
Ezzat, F.H., Abdel-Jaber, G.T. and Ali, W.Y. (2006) Dry Sliding of Rubber on Glazed Ceramic Tiles. Proceedings of the 7th International Conference of Tribology, EGTRIB 7, Cairo, 27-28 December 2006, 1-9.
Samy, A.M., Mahmoud, M.M., Khashaba, M.I. and Ali, W.Y. (2007) Friction of Rubber Sliding against Ceramics, I. Dry and Water Lubricated Conditions. KGK—Kautschuk Gummi Kunststoffe, 60, 322-327.
Samy, A.M., Mahmoud, M.M., Khashaba, M.I. and Ali, W.Y. (2006) Friction of Rubber Sliding against Ceramics, III. Sand Contaminating the Lubricating Fluids. Proceedings of the Fourth Assiut University International Conference on Mechanical Engineering Advanced Technology for Industrial Production MEATIP 4, Assiut, 12-14 December 2006.
Li, K.W., Yu, R. and Han, X.L. (2007) Physiological and Psychophysical Responses in Handling Maximum Acceptable Weights under Different Footwear-Floor Friction Conditions. Applied Ergonomics, 38, 259-265. http://dx.doi.org/10.1016/j.apergo.2006.06.006
Mohamed, M.K., ElKattan, A.A. and Ali, W.A. (2012) Friction Coefficient Displayed by Rubber Sliding against Flooring Tiles. International Journal of Engineering & Technology, 12, 144-149.
El-Sherbiny, Y.M., Mohamed, M.K. and Ali, W.Y. (2011) Friction Coefficient Displayed by Footwear Walking against Rubber Floorings Fitted by Cylindrical Treads. Journal of the Egyptian Society of Tribology, 8, 1-12.
El-Sherbiny, Y.M., Samy, A.M. and Ali, W.Y. (2010) Friction Coefficient of Rubber Sliding against Dusty Indoor Flooring. Journal of the Egyptian Society of Tribology, 7, 11-25.
El-Sherbiny, Y.M., Hasouna, A.T. and Ali, W.Y. (2011) Friction Coefficient of Rubber Sliding against Flooring Materials. KGK—Kautschuk Gummi Kunststoffe, 64, 44-49.
Hagger, A.M. and Davis, M. (1993) Short Fibre Reinforced, High-Temperature Resistant Polymers for a Wide Field of Tribological Applications. In: Friedrich, K., Ed., Advances in Composite Tribology, Elsevier, Amsterdam, 107-157. http://dx.doi.org/10.1016/B978-0-444-89079-5.50008-8
Adhvaryu, A., Erhan, S.Z. and Perez, J.M. (2004) Tribological Studies of Thermally and Chemically Modified Vegetable Oils for Use as Environmentally Friendly Lubricants. Wear, 257, 359-367. http://dx.doi.org/10.1016/j.wear.2004.01.005
Willing, A. (2001) Lubricants Based on Renewable Resources—An Environmentally Compatible Alternative to Mineral Oil Products. Chemosphere, 43, 89-98. http://dx.doi.org/10.1016/S0045-6535(00)00328-3
Adhvaryu, A., Erhan, S.Z. and Perez, J.M. (2004) Tribological Studies of Thermally and Chemically Modified Vegetable Oils for Use as Environmentally Friendly Lubricants. Wear, 257, 359-367. http://dx.doi.org/10.1016/j.wear.2004.01.005
Gerde, E. and Marder, M. (2001) Friction and Fracture. Nature, 413, 285-288. http://dx.doi.org/10.1038/35095018
He, G., Muser, M.H. and Robbins, M.O. (1999) Adsorbed Layers and the Origin of Static Friction. Science, 284, 1650-1652. http://dx.doi.org/10.1126/science.284.5420.1650