Effect of Nano Hexagonal Boron Nitride Lubricant Additives on the Friction and Wear Properties of AISI 4140 Steel |
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| Authors: | O. N. Çelik N. Ay Y. Göncü |
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| Affiliation: | 1. Department of Mechanical Engineering , Eskisehir Osmangazi University , Eskisehir , Turkey celikon@gmail.com;3. Department of Material Science and Engineering , Anadolu University , Eskisehir , Turkey;4. BORTEK, Boron Technologies and Mechatronics Inc. , Eskisehir , Turkey |
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| Abstract: | The aim of this study was to investigate the effects of nano hexagonal boron nitride(hBN) particles on the friction and wear properties of AISI 4140 steel material when the hBN particles are used as an oil additive. Nano hexagonal boron nitride powders, which were produced using a special process, were dispersed in engine oil (SAE10 W) to enhance lubrication. The amount of nano hexagonal boron nitride in the engine oil was varied from 0 to 10% by volume, and four different lubricant samples were prepared. Wear tests were conducted using ball-on-disc geometry. The worn surfaces of substrates were analyzed using scanning electron microscopy (SEM) and energy-dispersive x-ray spectroscopy (EDS). The experiments showed that the nano hexagonal boron nitride particles that were used as an oil additive affected the friction and wear behavior. A 14.4% improvement in the friction coefficient and a 65% decrease in the wear rate were achieved through the use of the nano hBN as an oil additive. |
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| Keywords: | Friction Lubricant Nano hexagonal boron nitride Nanoparticles Wear |
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