MIT-World Peace University (MIT-WPU) is a top educational institute located in Pune, India. It is recognized within&nbsp;UGC under Government of Maharashtra Act No. XXXV 2017.&nbsp;

It is part of the MIT group of institutions (established in 1983) which covers 10+ campuses across India and has more than 50,000+ students enrolled across various disciplines at a given point of time. The institute houses 15 schools ranging from Engineering &amp; Technology, Design, Pharmacy, Commerce, Governance among others. It offers undergraduate, postgraduate and PhD programs among different disciplines.&nbsp;

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MIT World Peace University

In recent years due to environmental issues, have a great demand to search for alternative energy sources. The high demand of fuels in transportation and industrial sectors strengthen the identification of alternative fuel sources. In this regards biodiesel and its different blends (corrosive environments) with petro diesel, can be considered a prompt substitute for petro diesel. But the use of biodiesel possesses several limitations, such as metal surface degradation, auto oxidation and instability of fuel properties. Automobile industries are also facing a major problem related to compatibility of automotive components with biodiesel and its blends. The majority of engine components manufactured by different metals and non-metals which gets affected due to contact with biodiesel. Current research used nodular (spheroidal graphite) cast iron which is widely used for manufacturing of engine parts like piston and piston rings. For automotive components palm biodiesel (B100) is more corrosive as compared with petro diesel (B0). Therefore, this research was carried out on nodular cast iron used for piston ring in different corrosive environment of fuel such as petro diesel (B0), palm biodiesel (B100) and their respective blends (B20, B10 & B5). The corrosiveness behavior of nodular C.I. with different blends was tested using static immersion test followed by Open Circuit Potential (OCP), Electrochemical Impedance Spectroscopy (EIS) & Tafel plot. Electro chemical degradation studies were characterize a nodular cast iron metal surface by Scanning Electron Microscopy (SEM) and Energy Dispersion Spectrography (EDS) after immersion test. Results conclude palm biodiesel is more corrosive to nodular C.I. than petro diesel and with different blends under above testing methods.

School of Mechanical Engineering

Engineering and Technology

World University root node

Materials Today: Proceeding

Effect of Heat Treatment on Corrosion Behavior of Nodular (Spheroidal Graphite) Cast Iron Using Electrochemical Tests in Biodiesel Environments

Biodiesel as an alternative fuel is overcoming to replace petroleum diesel partially. The tribological performance of biodiesel is crucial with respect to application in automobiles. Cast iron is widely used in for manufacturing of many automobile engine parts such as piston, valves, piston rings, etc. This research article evaluates the wear behavior of spheroidal graphite cast iron which is used for the manufacturing of piston rings with respect to different blends of biodiesel. Many experiments were carried out under metal to metal contact and lubricated sliding condition on, pin on disc wear testing machine. This shows the metallographic changes due to wear damage. Previous experimental result shows that friction coefficient and wear loss decreases significantly due to decrease in lubrication percentage of palm biodiesel. The test parameters used under this work were 8 kg, 10 kg, 12 kg, 14 kg and 16 kg loads for 1 h, at speed 300 rpm and at ambient temperature. Wear behavior of spheroidal graphite cast iron is evaluated using five different blends of biodiesel, B0 (100% petroleum diesel), B5 (5% biodiesel), B10 (10% biodiesel), B20 (20% biodiesel), B100 (100% palm biodiesel)).The period for which cast iron can sustain is determined by its wear and abrasion resistance. Due to formation of lubrication layer of ester compounds in palm biodiesel wear resistance of nodular cast iron increases as biodiesel percentage increase in the blend. Therefore, high wear resistance is critical for ensuring a long life of the cast iron in biodiesel environment. The results showed that the B100 has higher coefficient of friction and lowest surface roughness and wear volume loss as compared with petroleum diesel (B0). It also shows that wear and friction decrease as percentage of biodiesel increases. Scanning electron microscopy (SEM) investigations used to analyze the structure and surface morphology. Wear scar diameter (WSD) was investigated using optical microscopy in tested specimen. The wear rate was found to be more in petroleum diesel compared with palm biodiesel than other blends.

Journal of Bio- and Tribo-Corrosion

Wear Behavior of Spheroidal Graphite Cast Iron in Biodiesel Blends

Today various alternative fuels are used due to new emission norms and environmental factors. Biodiesel and its blends are one of the alternative fuel used nowadays due to its low sulphur content. Automobile metals like copper, aluminum, cast iron etc. are more resistive to corrosion in petro diesel but more corrosive in biodiesel and its blends. So study corrosive nature of biodiesel is important for longer life of these automobile metals and its components. Piston rings made of nodular cast iron are always in contact with burnt and unburnt fuel in engine during working. In present study, a corrosive characterization of nodular cast iron is investigated by giving a proper heat treatment to it and static immersion test in biodiesel blends. Scanning Electron Microscope, Energy Dispersion Spectrograph and optical microscope are used for analysis of present investigation study. Results show that change in basic microstructure of metal can increase resistance to corrosion due to change in phase of metal.

Engineering Failure Analysis

Corrosion behavior of nodular cast iron in biodiesel blends

The conducting polymers such as polyaniline, polypyrrole and polythiophene were functionalized with copper phthalocyanine using chemical oxidation method. The obtained polymers viz. PANI-CuPc, PPy-CuPc and PT-CuPc were studied as chemical sensors by their response characteristics after exposure to various chemical vapors such as methanol, ammonia and nitrogen dioxide. The results obtained showed that these polymers have moderate sensitivity towards the methanol as well as ammonia vapors whereas they show tremendous sensitivity towards nitrogen dioxide vapors. The sensitivity factor of as high as 50,000 was obtained for PT-CuPc polymers in nitrogen dioxide. In comparison to this, the sensitivity factors of about 100 and 40 were obtained, when these polymers were exposed to ammonia and methanol vapors. The very high selectivity towards the nitrogen dioxide was explained on the basis of charge transfer complex formed between, the phthalocyanine donor and nitrogen dioxide acceptor molecules. On the other hand, ammonia becomes a competing electron donor in CuPc containing conducting polymers. The very low response towards the methanol may be explained on the basis very little charge transfer / interaction between CuPc containing polymers and methanol. Thus, CuPc incorporated conducting polymers have much higher selectivity than their original homopolymer.