Electroless Ni-based coatings for biodiesel containers

摘要

Biodiesel commonly experiences oxidative and hydrolytic degradations, leading to problems of low storage stability and corrosion of fuel containers. The present study investigates the fabrication and use of electroless-deposited nickel alloys, containing phosphorus and tungsten, as potential coating materials that effectively protect steel-based biodiesel containers from corrosion. Through long-term static immersion and high-temperature oxidation tests, coupled with surface analyses of the coatings and assessments of the biodiesel's acidity and storage stability, it is determined that a nickel coating with 15 wt% of phosphorus is favorably compatible with biodiesel, both in terms of corrosion protection and fuel stability.