Effect of Spin Coating Speed on Corrosion Properties of Hybrid Tio2-Zro2 Nanocomposites Coatings Spin-Coated on Aisi 304 Steel
This paper presents the synthesis and characterization of hybrid TiO2-ZrO2 thin films spin-coated on AISI 304 stainless steel using spin coater at different coating speeds. To study the effect of spinning speed on the characteristics of the developed coatings and their capability on protecting underlying substance of AISI 304 steel against corrosion, three spinning speed sets were used. In this research, three spinning speed sets (L: 250-1000, M: 500-2500 and H: 750-4000) rpm were chosen to investigate the effect of rotational spinning speed on the characteristics of the coating films. Potentiodynamic polarization tests were utilized to measure corrosion rate and critical pitting potential of the spin-coated AISI 304 steel in simulated marine environment contains 3.5 wt. % NaCl. The corrosion test results also revealed that increasing the spinning speed and the nanoparticles weight percentage in gelatin to a certain limit has a positive impact on the uniform and localized corrosion behavior
Index Terms— Spinning speed, Nanoparticles, Titanium Dioxide, Zirconium dioxide, Gelatin, Corrosion resistance, AISI 304 steel stainless steel.