Study on tribological performance of mild steel under canola bio-lubricant conditions

Alajmi, Faisal (2015) Study on tribological performance of mild steel under canola bio-lubricant conditions. [USQ Project]

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The products based on fossil oils are increasing with the concerns of the environmental sectors and academics as well. In this era, there are challenges to find alternative resources replacing the fossil oil for different engineering applications. One of the fossil oil products is lubricant. Fossil lubricants have many industrial applications and involve millions of dollars each year in developments of lubricants due to the huge needs. Accordingly and to satisfy the industrial needs with the environmental considerations, alternative environmental-friendly-Lubricants are nowadays the main aim to identity by the tribologists.

In this project, new lubricants based on vegetable oil were developed. Different blends of canola oil mixed sith fully synthetic two stock engine oils were developed (0, 20%, 40%, 60%, 80%, and 100% of synthetic oil). Viscosity of the prepared blends were determined at different level of temperature (20 ºC – 80 ºC). Tribological experiments were conducted to investigate the influence of the newly developed oil on wear and frictional characteristics of mild steel material subjected to adhesive wear loading against stainless steel. Friction coefficient, weight loss, and specific wear rate of the mild steel were determined under the prepared lubricants’ conditions. Scanning electron microscopy was used to examine the worn surface of the mild steel. The results revealed that pure canola oil as lubricant exhibited competitive performance compared to the blend of 80 % synthetic and 20 % canola oils. The viscosity of the canola oil and its blends with synthetic oil is controlled by the environmental temperature since increase the temperature reduces viscosity. Blending the canola oil with synthetic oil increases the viscosity of the lubricants. The experimental results revealed that operating parameters have played the main role in controlling the wear and frictional behaviour of the mild steel since increase the sliding distances increase the weight loss, specific wear rate exhibited steady state after about 5 km sliding distance, and applied loads and velocity showed different influence for different blends. Frictional coefficient of the mils steel was dependent on the applied load and villosity rather than the sliding distance. There was no significances of remarkable the mixing ratio of canola and syntactic oil since the pure canola oil exhibited competitive wear performance among other blends. However, intermediate mixing ratio (40% - 60% synthetic oil mixed with 60% - 40% canola) can produce slightly low specific wear rate among others.

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Item Type: USQ Project
Item Status: Live Archive
Additional Information: Bachelor of Engineering (Mechanical) project
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - No Department (1 Jul 2013 -)
Supervisors: Yousif, Belal
Date Deposited: 30 May 2016 05:04
Last Modified: 30 May 2016 05:04
Uncontrolled Keywords: environmental-friendly-Lubricants, fossil oils, Fossil lubricants
Fields of Research (2008): 09 Engineering > 0913 Mechanical Engineering > 091399 Mechanical Engineering not elsewhere classified
Fields of Research (2020): 40 ENGINEERING > 4017 Mechanical engineering > 401799 Mechanical engineering not elsewhere classified

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