Evaluation of anti-wear properties of automobile lubricant with different additives using thin layer activation techniqu
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Evaluation of anti‑wear properties of automobile lubricant with different additives using thin layer activation technique Jayashree Biswal1 · H. J. Pant1 · G. D. Thakre2 · S. C. Sharma3 · A. K. Gupta3 Received: 28 January 2020 © Akadémiai Kiadó, Budapest, Hungary 2020
Abstract Thin layer activation technique (TLA) has been used for measurement of wear rate of disc gears under lubricated condition. A synthetic base lubricant was blended with four different types of additives, such as, hexagonal boron nitride (h-BN), molybdenum disulphide (MoS2), graphite and copper nanoparticles (Cu np). The wear rate of the disc gear was measured in presence of individual lubricant formulations. The aim of the current study is to examine the effect of different additives on anti-wear behavior of the synthetic heavy duty gear lubricant using TLA technique. The lubricant formulation containing h-BN showed best anti-wear property among all the formulations and the wear rate in this case was found to be minimum from all other cases. Keywords Thin layer activation · Lubricant · Anti-wear · Additive · Tribometer · Proton beam
Introduction Industrial gear boxes are desired to perform under extreme environment, such as high temperature, high load and dirt. Engine lubricants are used to protect gears and other equipments by reducing friction and wear of the equipments. Apart from lubrication, the lubricants also help in cleaning, cooling and sealing the equipments. To further improve the protection and to prevent equipment failure, the properties of the lubricant formulation can be enhanced by specific additives. Base lubricant/oil types, viscosity of the lubricant, nature of additives have strong influence on gear efficiency. Although the properties of commercially available lubricants are quoted by the supplier, but actual wear and friction behaviour of these lubricants cannot be quantified from mere physical or chemical data. Hence bench test method is adopted to evaluate these behaviours of the lubricants. Blending the lubricant with a small amount of additive can * H. J. Pant [email protected] 1
Isotope and Radiation Application Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
2
Tribology and Combustion Division, Indian Institute of Petroleum, Dehradun, Uttarakhand 248005, India
3
Nuclear Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
positively alter the tribological properties of the lubricant. Researchers have been working on development and application of lubricant formulation containing different additives, which can effectively protect engine parts under extreme load and speed environment [1–5]. Lubricant additives are organic or inorganic compounds, which are blended with the base oil in a low quantity. These additives may play many roles, such as, enhancing base oil properties, suppressing undesirable properties of the base oil and imparting new properties to the base oil. The additives may provide antioxidant as well as anti-wear benefits to the lubrican
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