FABRICATION AND CORROSIVE PERFORMANCE EVALUATION OF CERIA ZIRCONIUM

Kalaiselvan P, Kamalakkannan A

Abstract: Oxidations at elevated temperatures results in the degradation of materials in land based gas turbines, aircraft, marine and in industrial applications. Now hot corrosion is recognized as a severe problem in the fuel based power producing systems around the globe. The hot corrosion and erosion are responsible for huge losses in boilers and associated components. A clear knowledge about this problem guides us to develop suitable protective system to maximize the utilization of such components. This problems can be solved either by changing materials or altering environment or by separating material surface from the environment. The use of coatings for separating materials from environment for preventing the hot corrosion gaining importance in surface engineering .The plasma spray coatings of yttria stabilized zirconium coatings provides good resistance to the stainless steels , high speed steels and other materials to withstand optimum corrosion and wear properties . Further addition of the ceria to the zirconium results with greater corrosion resistance

Keywords: Plasma arc coating of ceria zirconium oxide, corrosion resistance of ceria zirconium.

DOI: https://doi.org/10.15623/ijret.2014.0323066