**Erosion Behavior of Plasma Sprayed Alumina and Calcia-Stabilized Zirconia Coatings on Cast Iron Substrate**

N. Krishnamurthy1, M.S. Murali2, B. Venkataraman3 and P.G. Mukunda4 *1Mechanical Engineering Department, K.S. Institute of Technology, Bangalore, 2Auden Technology and Management Academy, Bangalore, 3Surface Engineering Group, Defence Metallurgical Research Laboratory, Kanchanbagh, Hyderabad, 4Mechanical Engineering Department, Nitte Meenakshi Institute of Technology, Bangalore, India* 
