Chapter I present the introduction of the thesis. This chapter briefs about corrosion and its preventive methods using conductive polymer coatings and superhydrophobic coatings. This chapter also gives introduction about defluoridation by various adsorbents. This chapter also summarizes the relevant review of literature along with scope and objectives of the study.This chapter II deals with formation of protective ceramic-PANI, ceramic-poly(Ani-co-oPD)...