Abstract:
In the present Study, the wear and friction behavior of AISI 52100 steel and alumina against niobium carbide coated AISI 1040 steel disk was studied using ball-on-disk arrangement. Niobium carbide coating treatment was performed on AISI 1040 steels using thermo-reactive diffusion techniques. The presence of NbC phase in the coating layer was confirmed by X-ray diffraction analysis. Friction and wear tests were carried out at dry test conditions under 2.5, 5 and 10 N loads at 0.1 m/s sliding speed. The results showed that the friction coefficient values are 0.4-0.68 for AISI 52100 steel and 0.4-0.55 for alumina ball, respectively. The specific wear rate of AISI 52100 steel is ranging between 5.66 x 10(-6) and 3.79 x 10(-5) mm(3)/N m. For alumina, it ranges between 3.03 x 10(-8) and 6.36 x 10(-7) mm(3)/N m. In case of alumina running against niobium carbide coated disk, the wear rate obtained from wear tracks on the disk is ranging between 1.44 x 10(-6) and 7.55 x 10(-6) mm(3)/N m. In general, the coefficient of friction and wear rate increased with the increase in load value. (c) 2007 Elsevier B.V. All rights reserved.
