Experimental Study On Friction And Lubrication Of Nano-two Phase Fluid

Oil is one of the important support materials in modern industry and defense industry. The purpose of using lubricants is to reduce friction and wear between the motion pairs, reduce or avoid the destruction of materials, improve mechanical efficiency, and extend the working life of machinery. It is estimated that 50%~70% of energy in the world is lost because of the friction, and the wear is one of the main forms of scrap materials. Using the new additives instead of the traditional oiliness additive and extreme-pressure anti-wear additive has become a hot research field. With the development of nanotechnology in recent years, researchers are increasingly exploring the lubricating oil by adding nano-materials. With the unique circular particles, nano-diamond would not only have the hardness and wear resistance of diamond, but also have the good characteristics of nano-materials. Because of these features, development of nano-diamond additive is of great significance.The paper at first explored the dispersion when nano-diamond was added to the oil. A steady nano-diamond additive lubricant was prepared. It made preparations for studying the tribological performances of nano-diamond lubricant oil. Then, the anti-wear and anti-friction abilities of the base oil with different content of nano-diamond were evaluated on some experiments. The HQ-800 four-ball tester which is point contact friction, the M-200 machine which is line contact friction, and HDM-20 face to face tester which is surface contact friction were used to comprehensively study the anti-wear and anti-friction abilities in three different friction contact. By analyzing and summarizing the test results, the largest carrying capacity, friction coefficient, wearing capacity and other change of nano-diamond lubricant oil under different conditions can be obtained.