| Abstract Scope |
Due to its vast industrial applications, steel is often exposed to a wide variety of harsh environments leading to corrosion/oxidation damage. In this work, polymer derived ceramic coatings for steels have been explored for low temperature and high temperature uses in corrosive environments. The microstructure evolution, pyrolysis behaviors, and corrosion properties were investigated. The coatings change from being hydrophobic to being hydrophilic above 200oC pyrolysis temperature. Higher pyrolysis temperature leads to higher hardness and Young’s modulus coatings. The high-temperature oxidation behaviors of SiON coated AISI 441 substrates were studied in Ar+O2, Ar+H2O, and Ar+CO2 atmospheres at 800oC for 100 hours. The SiON coated AISI 441 substrates showed better performance in all three atmospheres. |