lect... Hanaa Arir Sameej from the Materials Engineering Department at the University of Technology has a patent on:(--------)The patent included the use of thermal spray forming technique for the manufacture of ceramic tubes from Alumina pure Al2O3 With 5% of the magnesium oxide (MgO) and a thickness of 1-2 mm (mm62-83) on the base of the graphite as a rotary spindle, pipes were prepared for ceramic overlays of Alumina (Al2O3) with four different percentages (10%, 20%, 28% and 30%) of silica (SiO2) and ZlSiO4 (5%, 10%, 15%, 20%) with alumina (Al2O3) and TiO2. Structural analysis (x-ray diffraction, scanning electron microscopy and atomic force microscopy) and hardness to test the performance of spray formation for regular coating thickness for all samples.