PT  - JOURNAL ARTICLE
AU  - Hayajneh, Mohammed T.
AU  - Almomani, Mohammed
AU  - Al-Daraghmeh, Mohammad
TI  - Enhancement the Corrosion Resistance of AISI 304 Stainless Steel by Nanocomposite Gelatin-Titanium Dioxide Coatings
DP  - 2019 Oct 1
TA  - Manufacturing Technology Journal
PG  - 759--766
VI  - 19
IP  - 5
AID - 10.21062/ujep/368.2019/a/1213-2489/MT/19/5/759
IS  - 12132489
AB  - AISI 304 stainless steel is widely used in many industries due to its good properties such as corrosion resistance and mechanical properties. However, this steel is usually exposed to a severe environment that leads to high corrosion and mechanical failure. This study aims to examine the corrosion behavior of spin-coated AISI 304 stainless steel in a simulated marine environment contains 3.5 wt. % NaCl, by preparing and characterizing nanocomposite coatings with different weight fractions of TiO 2 (0, 1, 2, 3 wt. %) dispersed in a gelatin matrix. Three spinning speed sets (Low (L): 250-1000, Medium (M): 500-2500 and High (H): 750-4000) rpm were chosen to inspect the effect of spinning speed on the characteristics of coatings. Nanoparticles dispersed in gelatin matrix were examined by XRD, SEM, and EDX. The results approved the formation of crack-free and homogeneous coatings without any noticeable defect. Moreover, the corrosion evaluations were measured by potentiodynamic polarization technique. The results showed that compared to uncoated AISI 304 steel, the corrosion behavior of TiO 2 nanoparticles dispersed in gelatin matrix considerably improved the uniform and localized corrosion. The corrosion test results showed that increasing the spinning speed to a certain limit has a positive impact on the corrosion characteristics.