This study is focused on super hard materials in terms of their characteristics assessment, super-hardness coating techniques and super-hardness coatings as corrosion inhibitors. However, plasma cladding showed good and effective technique for surface performance enhancement. Taper abrasion tests revealed enhanced good mechanical wear resistivity of the coatings which was the result of applying the magnetron sputtering technique. Also the study showed the importance of super-hard coatings techniques as corrosion inhibitors in roofing materials in protecting the roofing sheet from corrosion or rust due to the influence of moisture content of the air as well as rainfall.