Abstract: Tazheranite is the modified form of cubic zirconia.It plays a significant role, to alter the micro hardness of surface of the applied coating (Al2O3+ZrO2.5CaO).Present experimental work is to investigate the effect of Tazheranite (rare mineral) phase on micro hardness of the top coat applied pure ceramic on Al6061 and Gray Cast Iron substrates. Tarzheranite phase perceived in Xrd analysis during Air plasma coating in this experimental work.

Keywords: Tarzheranite, Local particle density, Thickness, Porosity, Microhardness.