Corrosion behavior of copper, aluminium, and stainless steel 316L in chicken fat oil based biodiesel-diesel blends

This study investigates the corrosion behavior of automotive materials in bio-based fuels. The Response Surface Methodology is employed to evaluate the corrosion rates of materials such as copper, aluminium, and stainless steel when they are exposed to chicken fat-based biodiesel. Copper, aluminium, and stainless steel showed minimum corrosion rate at a blend percentage of 5.86 % when they were immersed for 920 h and maximum corrosion rate at blend percentage 34.14 % when these were immersed for 920 h. Meanwhile, the maximum corrosion rate was observed at a blend percentage of 34.14 % corresponding to the same immersion period. Optimum values indicated by RSM for copper and aluminium were noted at a blend percentage of 10 % and an immersion period of 720 h. Similarly, for stainless steel 316 l, these were 10.91 % and 754.44 h, respectively. Additionally, trials using the B100 for 920 h were conducted on copper, aluminium, and stainless steel 316 l, and the results showed considerably higher corrosion rates than those previously found. The surface morphology of the materials was investigated by X-ray Diffraction and Scanning Electron Microscopy, and it was revealed that copper was the most corrosive material in chicken fat oil-based biodiesel followed by aluminium and stainless steel 316 l.

Automated summary

This study investigates the corrosion behavior of automotive materials in bio-based fuels. The Response Surface Methodology (RSM) is used to evaluate the corrosion rates of copper, aluminium, and stainless steel when exposed to chicken fat-based biodiesel. It was found that copper, aluminium, and stainless steel showed minimum corrosion rate at a blend percentage of 5.86% and maximum corrosion rate at blend percentage of 34.14% when immersed for 920 hours. The surface morphology of the materials was investigated, revealing that copper was the most corrosive material followed by aluminium and stainless steel 316 l in chicken fat oil-based biodiesel.