Abstract
In the present study, Ti-6Al-4V-2B4C coatings are deposited using a DC magnetron sputtering system on AISI 1040 steel substrates. The composition and elemental confirmation of the coating was explored by SEM, XRD and EDS. Wear and friction tests were trained to study the influence of sliding distance and load on tribological behaviour of Ti-6Al-4V-2B4C coated AISI 1040 steel for machine elements. Wear tests were performed on coated AISI 1040 steel substrates counter to E-52100 steel balls by using a ball-on-disc wear testing apparatus under 2N and 3N normal loads at room temperature. The different sliding distances (63, 78, 94 and 110 m) has taken for wear test under room temperature and low coefficient of friction obtained for higher sliding distance and load. Ti-6Al-4V-2B4C coated AISI 1040 steel reduces the frictional coefficient from 0.65 to 0.23 and improves the wear resistance. Specific wear rate of the coating reaches the maximum value with higher sliding distance. On the outset, it is clearly showing that the formation of oxide layers of Ti-6Al-4V-2B4C coatings mainly affects its tribological characteristics.
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